Array Functions
| Function | Description |
|---|---|
| array() | Creates an array |
| array_change_key_case() | Changes all keys in an array to lowercase or uppercase |
| array_chunk() | Splits an array into chunks of arrays |
| array_column() | Returns the values from a single column in the input array |
| array_combine() | Creates an array by using the elements from one “keys” array and one “values” array |
| array_count_values() | Counts all the values of an array |
| array_diff() | Compare arrays, and returns the differences (compare values only) |
| array_diff_assoc() | Compare arrays, and returns the differences (compare keys and values) |
| array_diff_key() | Compare arrays, and returns the differences (compare keys only) |
| array_diff_uassoc() | Compare arrays, and returns the differences (compare keys and values, using a user-defined key comparison function) |
| array_diff_ukey() | Compare arrays, and returns the differences (compare keys only, using a user-defined key comparison function) |
| array_fill() | Fills an array with values |
| array_fill_keys() | Fills an array with values, specifying keys |
| array_filter() | Filters the values of an array using a callback function |
| array_flip() | Flips/Exchanges all keys with their associated values in an array |
| array_intersect() | Compare arrays, and returns the matches (compare values only) |
| array_intersect_assoc() | Compare arrays and returns the matches (compare keys and values) |
| array_intersect_key() | Compare arrays, and returns the matches (compare keys only) |
| array_intersect_uassoc() | Compare arrays, and returns the matches (compare keys and values, using a user-defined key comparison function) |
| array_intersect_ukey() | Compare arrays, and returns the matches (compare keys only, using a user-defined key comparison function) |
| array_key_exists() | Checks if the specified key exists in the array |
| array_keys() | Returns all the keys of an array |
| array_map() | Sends each value of an array to a user-made function, which returns new values |
| array_merge() | Merges one or more arrays into one array |
| array_merge_recursive() | Merges one or more arrays into one array recursively |
| array_multisort() | Sorts multiple or multi-dimensional arrays |
| array_pad() | Inserts a specified number of items, with a specified value, to an array |
| array_pop() | Deletes the last element of an array |
| array_product() | Calculates the product of the values in an array |
| array_push() | Inserts one or more elements to the end of an array |
| array_rand() | Returns one or more random keys from an array |
| array_reduce() | Returns an array as a string, using a user-defined function |
| array_replace() | Replaces the values of the first array with the values from following arrays |
| array_replace_recursive() | Replaces the values of the first array with the values from following arrays recursively |
| array_reverse() | Returns an array in the reverse order |
| array_search() | Searches an array for a given value and returns the key |
| array_shift() | Removes the first element from an array, and returns the value of the removed element |
| array_slice() | Returns selected parts of an array |
| array_splice() | Removes and replaces specified elements of an array |
| array_sum() | Returns the sum of the values in an array |
| array_udiff() | Compare arrays, and returns the differences (compare values only, using a user-defined key comparison function) |
| array_udiff_assoc() | Compare arrays, and returns the differences (compare keys and values, using a built-in function to compare the keys and a user-defined function to compare the values) |
| array_udiff_uassoc() | Compare arrays, and returns the differences (compare keys and values, using two user-defined key comparison functions) |
| array_uintersect() | Compare arrays, and returns the matches (compare values only, using a user-defined key comparison function) |
| array_uintersect_assoc() | Compare arrays, and returns the matches (compare keys and values, using a built-in function to compare the keys and a user-defined function to compare the values) |
| array_uintersect_uassoc() | Compare arrays, and returns the matches (compare keys and values, using two user-defined key comparison functions) |
| array_unique() | Removes duplicate values from an array |
| array_unshift() | Adds one or more elements to the beginning of an array |
| array_values() | Returns all the values of an array |
| array_walk() | Applies a user function to every member of an array |
| array_walk_recursive() | Applies a user function recursively to every member of an array |
| arsort() | Sorts an associative array in descending order, according to the value |
| asort() | Sorts an associative array in ascending order, according to the value |
| compact() | Create array containing variables and their values |
| count() | Returns the number of elements in an array |
| current() | Returns the current element in an array |
| each() | Deprecated from PHP 7.2. Returns the current key and value pair from an array |
| end() | Sets the internal pointer of an array to its last element |
| extract() | Imports variables into the current symbol table from an array |
| in_array() | Checks if a specified value exists in an array |
| key() | Fetches a key from an array |
| krsort() | Sorts an associative array in descending order, according to the key |
| ksort() | Sorts an associative array in ascending order, according to the key |
| list() | Assigns variables as if they were an array |
| natcasesort() | Sorts an array using a case insensitive “natural order” algorithm |
| natsort() | Sorts an array using a “natural order” algorithm |
| next() | Advance the internal array pointer of an array |
| pos() | Alias of current() |
| prev() | Rewinds the internal array pointer |
| range() | Creates an array containing a range of elements |
| reset() | Sets the internal pointer of an array to its first element |
| rsort() | Sorts an indexed array in descending order |
| shuffle() | Shuffles an array |
| sizeof() | Alias of count() |
| sort() | Sorts an indexed array in ascending order |
| uasort() | Sorts an array by values using a user-defined comparison function |
| uksort() | Sorts an array by keys using a user-defined comparison function |
| usort() | Sorts an array using a user-defined comparison function |
Calendar Functions
| Function | Description |
|---|---|
| cal_days_in_month() | Returns the number of days in a month for a specified year and calendar |
| cal_from_jd() | Converts a Julian Day Count into a date of a specified calendar |
| cal_info() | Returns information about a specified calendar |
| cal_to_jd() | Converts a date in a specified calendar to Julian Day Count |
| easter_date() | Returns the Unix timestamp for midnight on Easter of a specified year |
| easter_days() | Returns the number of days after March 21, that the Easter Day is in a specified year |
| frenchtojd() | Converts a French Republican date to a Julian Day Count |
| gregoriantojd() | Converts a Gregorian date to a Julian Day Count |
| jddayofweek() | Returns the day of the week |
| jdmonthname() | Returns a month name |
| jdtofrench() | Converts a Julian Day Count to a French Republican date |
| jdtogregorian() | Converts a Julian Day Count to a Gregorian date |
| jdtojewish() | Converts a Julian Day Count to a Jewish date |
| jdtojulian() | Converts a Julian Day Count to a Julian date |
| jdtounix() | Converts Julian Day Count to Unix timestamp |
| jewishtojd() | Converts a Jewish date to a Julian Day Count |
| juliantojd() | Converts a Julian date to a Julian Day Count |
| unixtojd() | Converts Unix timestamp to Julian Day Count |
Date Functions
| Function | Description |
|---|---|
| checkdate() | Validates a Gregorian date |
| date_add() | Adds days, months, years, hours, minutes, and seconds to a date |
| date_create_from_format() | Returns a new DateTime object formatted according to a specified format |
| date_create() | Returns a new DateTime object |
| date_date_set() | Sets a new date |
| date_default_timezone_get() | Returns the default timezone used by all date/time functions |
| date_default_timezone_set() | Sets the default timezone used by all date/time functions |
| date_diff() | Returns the difference between two dates |
| date_format() | Returns a date formatted according to a specified format |
| date_get_last_errors() | Returns the warnings/errors found in a date string |
| date_interval_create_from_date_string() | Sets up a DateInterval from the relative parts of the string |
| date_interval_format() | Formats the interval |
| date_isodate_set() | Sets the ISO date |
| date_modify() | Modifies the timestamp |
| date_offset_get() | Returns the timezone offset |
| date_parse_from_format() | Returns an associative array with detailed info about a specified date, according to a specified format |
| date_parse() | Returns an associative array with detailed info about a specified date |
| date_sub() | Subtracts days, months, years, hours, minutes, and seconds from a date |
| date_sun_info() | Returns an array containing info about sunset/sunrise and twilight begin/end, for a specified day and location |
| date_sunrise() | Returns the sunrise time for a specified day and location |
| date_sunset() | Returns the sunset time for a specified day and location |
| date_time_set() | Sets the time |
| date_timestamp_get() | Returns the Unix timestamp |
| date_timestamp_set() | Sets the date and time based on a Unix timestamp |
| date_timezone_get() | Returns the time zone of the given DateTime object |
| date_timezone_set() | Sets the time zone for the DateTime object |
| date() | Formats a local date and time |
| getdate() | Returns date/time information of a timestamp or the current local date/time |
| gettimeofday() | Returns the current time |
| gmdate() | Formats a GMT/UTC date and time |
| gmmktime() | Returns the Unix timestamp for a GMT date |
| gmstrftime() | Formats a GMT/UTC date and time according to locale settings |
| idate() | Formats a local time/date as integer |
| localtime() | Returns the local time |
| microtime() | Returns the current Unix timestamp with microseconds |
| mktime() | Returns the Unix timestamp for a date |
| strftime() | Formats a local time and/or date according to locale settings |
| strptime() | Parses a time/date generated with strftime() |
| strtotime() | Parses an English textual datetime into a Unix timestamp |
| time() | Returns the current time as a Unix timestamp |
| timezone_abbreviations_list() | Returns an associative array containing dst, offset, and the timezone name |
| timezone_identifiers_list() | Returns an indexed array with all timezone identifiers |
| timezone_location_get() | Returns location information for a specified timezone |
| timezone_name_from_ abbr() | Returns the timezone name from abbreviation |
| timezone_name_get() | Returns the name of the timezone |
| timezone_offset_get() | Returns the timezone offset from GMT |
| timezone_open() | Creates new DateTimeZone object |
| timezone_transitions_get() | Returns all transitions for the timezone |
| timezone_version_get() | Returns the version of the timezonedb |
Directory Functions
| Function | Description |
|---|---|
| chdir() | Changes the current directory |
| chroot() | Changes the root directory |
| closedir() | Closes a directory handle |
| dir() | Returns an instance of the Directory class |
| getcwd() | Returns the current working directory |
| opendir() | Opens a directory handle |
| readdir() | Returns an entry from a directory handle |
| rewinddir() | Resets a directory handle |
| scandir() | Returns an array of files and directories of a specified directory |
Error Functions
| Function | Description |
|---|---|
| debug_backtrace() | Generates a backtrace |
| debug_print_backtrace() | Prints a backtrace |
| error_clear_last() | Clears the last error |
| error_get_last() | Returns the last error that occurred |
| error_log() | Sends an error message to a log, to a file, or to a mail account |
| error_reporting() | Specifies which errors are reported |
| restore_error_handler() | Restores the previous error handler |
| restore_exception_handler() | Restores the previous exception handler |
| set_error_handler() | Sets a user-defined error handler function |
| set_exception_handler() | Sets a user-defined exception handler function |
| trigger_error() | Creates a user-level error message |
| user_error() | Alias of trigger_error() |
Filesystem Functions
| Function | Description |
|---|---|
| basename() | Returns the filename component of a path |
| chgrp() | Changes the file group |
| chmod() | Changes the file mode |
| chown() | Changes the file owner |
| clearstatcache() | Clears the file status cache |
| copy() | Copies a file |
| delete() | See unlink() or unset() |
| dirname() | Returns the directory name component of a path |
| disk_free_space() | Returns the free space of a filesystem or disk |
| disk_total_space() | Returns the total size of a filesystem or disk |
| diskfreespace() | Alias of disk_free_space() |
| fclose() | Closes an open file |
| feof() | Checks if the “end-of-file” (EOF) has been reached for an open file |
| fflush() | Flushes buffered output to an open file |
| fgetc() | Returns a single character from an open file |
| fgetcsv() | Returns a line from an open CSV file |
| fgets() | Returns a line from an open file |
| fgetss() | Deprecated from PHP 7.3. Returns a line from an open file – stripped from HTML and PHP tags |
| file() | Reads a file into an array |
| file_exists() | Checks whether or not a file or directory exists |
| file_get_contents() | Reads a file into a string |
| file_put_contents() | Writes data to a file |
| fileatime() | Returns the last access time of a file |
| filectime() | Returns the last change time of a file |
| filegroup() | Returns the group ID of a file |
| fileinode() | Returns the inode number of a file |
| filemtime() | Returns the last modification time of a file |
| fileowner() | Returns the user ID (owner) of a file |
| fileperms() | Returns the file’s permissions |
| filesize() | Returns the file size |
| filetype() | Returns the file type |
| flock() | Locks or releases a file |
| fnmatch() | Matches a filename or string against a specified pattern |
| fopen() | Opens a file or URL |
| fpassthru() | Reads from the current position in a file – until EOF, and writes the result to the output buffer |
| fputcsv() | Formats a line as CSV and writes it to an open file |
| fputs() | Alias of fwrite() |
| fread() | Reads from an open file (binary-safe) |
| fscanf() | Parses input from an open file according to a specified format |
| fseek() | Seeks in an open file |
| fstat() | Returns information about an open file |
| ftell() | Returns the current position in an open file |
| ftruncate() | Truncates an open file to a specified length |
| fwrite() | Writes to an open file (binary-safe) |
| glob() | Returns an array of filenames / directories matching a specified pattern |
| is_dir() | Checks whether a file is a directory |
| is_executable() | Checks whether a file is executable |
| is_file() | Checks whether a file is a regular file |
| is_link() | Checks whether a file is a link |
| is_readable() | Checks whether a file is readable |
| is_uploaded_file() | Checks whether a file was uploaded via HTTP POST |
| is_writable() | Checks whether a file is writable |
| is_writeable() | Alias of is_writable() |
| lchgrp() | Changes the group ownership of a symbolic link |
| lchown() | Changes the user ownership of a symbolic link |
| link() | Creates a hard link |
| linkinfo() | Returns information about a hard link |
| lstat() | Returns information about a file or symbolic link |
| mkdir() | Creates a directory |
| move_uploaded_file() | Moves an uploaded file to a new location |
| parse_ini_file() | Parses a configuration file |
| parse_ini_string() | Parses a configuration string |
| pathinfo() | Returns information about a file path |
| pclose() | Closes a pipe opened by popen() |
| popen() | Opens a pipe |
| readfile() | Reads a file and writes it to the output buffer |
| readlink() | Returns the target of a symbolic link |
| realpath() | Returns the absolute pathname |
| realpath_cache_get() | Returns realpath cache entries |
| realpath_cache_size() | Returns realpath cache size |
| rename() | Renames a file or directory |
| rewind() | Rewinds a file pointer |
| rmdir() | Removes an empty directory |
| set_file_buffer() | Alias of stream_set_write_buffer(). Sets the buffer size for write operations on the given file |
| stat() | Returns information about a file |
| symlink() | Creates a symbolic link |
| tempnam() | Creates a unique temporary file |
| tmpfile() | Creates a unique temporary file |
| touch() | Sets access and modification time of a file |
| umask() | Changes file permissions for files |
| unlink() | Deletes a file |
Filter Functions
| Function | Description |
|---|---|
| filter_has_var() | Checks whether a variable of a specified input type exist |
| filter_id() | Returns the filter ID of a specified filter name |
| filter_input() | Gets an external variable (e.g. from form input) and optionally filters it |
| filter_input_array() | Gets external variables (e.g. from form input) and optionally filters them |
| filter_list() | Returns a list of all supported filter names |
| filter_var() | Filters a variable with a specified filter |
| filter_var_array() | Gets multiple variables and filter them |
FTP Functions
| Function | Description |
|---|---|
| ftp_alloc() | Allocates space for a file to be uploaded to the FTP server |
| ftp_cdup() | Changes to the parent directory on the FTP server |
| ftp_chdir() | Changes the current directory on the FTP server |
| ftp_chmod() | Sets permissions on a file via FTP |
| ftp_close() | Closes an FTP connection |
| ftp_connect() | Opens an FTP connection |
| ftp_delete() | Deletes a file on the FTP server |
| ftp_exec() | Executes a command on the FTP server |
| ftp_fget() | Downloads a file from the FTP server and saves it into an open local file |
| ftp_fput() | Uploads from an open file and saves it to a file on the FTP server |
| ftp_get() | Downloads a file from the FTP server |
| ftp_get_option() | Returns runtime options of the FTP connection |
| ftp_login() | Logs in to the FTP connection |
| ftp_mdtm() | Returns the last modified time of a specified file |
| ftp_mkdir() | Creates a new directory on the FTP server |
| ftp_mlsd() | Returns the list of files in the specified directory |
| ftp_nb_continue() | Continues retrieving/sending a file (non-blocking) |
| ftp_nb_fget() | Downloads a file from the FTP server and saves it into an open file (non-blocking) |
| ftp_nb_fput() | Uploads from an open file and saves it to a file on the FTP server (non-blocking) |
| ftp_nb_get() | Downloads a file from the FTP server (non-blocking) |
| ftp_nb_put() | Uploads a file to the FTP server (non-blocking) |
| ftp_nlist() | Returns a list of files in the specified directory on the FTP server |
| ftp_pasv() | Turns passive mode on or off |
| ftp_put() | Uploads a file to the FTP server |
| ftp_pwd() | Returns the current directory name |
| ftp_quit() | Alias of ftp_close() |
| ftp_raw() | Sends a raw command to the FTP server |
| ftp_rawlist() | Returns a list of files with file information from a specified directory |
| ftp_rename() | Renames a file or directory on the FTP server |
| ftp_rmdir() | Deletes an empty directory on the FTP server |
| ftp_set_option() | Sets runtime options for the FTP connection |
| ftp_site() | Sends an FTP SITE command to the FTP server |
| ftp_size() | Returns the size of the specified file |
| ftp_ssl_connect() | Opens a secure SSL-FTP connection |
| ftp_systype() | Returns the system type identifier of the FTP server |
Libxml Functions
| Function | Description |
|---|---|
| libxml_clear_errors() | Clears the libxml error buffer |
| libxml_disable_entity_loader() | Enables the ability to load external entities |
| libxml_get_errors() | Gets the errors from the the libxml error buffer |
| libxml_get_last_error() | Gets the last error from the the libxml error buffer |
| libxml_set_external_entity_loader() | Changes the default external entity loader |
| libxml_set_streams_context() | Sets the streams context for the next libxml document load or write |
| libxml_use_internal_errors() | Disables the standard libxml errors and enables user error handling |
Mail Functions
| Function | Description |
|---|---|
| ezmlm_hash() | Calculates the hash value needed by EZMLM |
| mail() | Allows you to send emails directly from a script |
Math Functions
| Function | Description |
|---|---|
| abs() | Returns the absolute (positive) value of a number |
| acos() | Returns the arc cosine of a number |
| acosh() | Returns the inverse hyperbolic cosine of a number |
| asin() | Returns the arc sine of a number |
| asinh() | Returns the inverse hyperbolic sine of a number |
| atan() | Returns the arc tangent of a number in radians |
| atan2() | Returns the arc tangent of two variables x and y |
| atanh() | Returns the inverse hyperbolic tangent of a number |
| base_convert() | Converts a number from one number base to another |
| bindec() | Converts a binary number to a decimal number |
| ceil() | Rounds a number up to the nearest integer |
| cos() | Returns the cosine of a number |
| cosh() | Returns the hyperbolic cosine of a number |
| decbin() | Converts a decimal number to a binary number |
| dechex() | Converts a decimal number to a hexadecimal number |
| decoct() | Converts a decimal number to an octal number |
| deg2rad() | Converts a degree value to a radian value |
| exp() | Calculates the exponent of e |
| expm1() | Returns exp(x) – 1 |
| floor() | Rounds a number down to the nearest integer |
| fmod() | Returns the remainder of x/y |
| getrandmax() | Returns the largest possible value returned by rand() |
| hexdec() | Converts a hexadecimal number to a decimal number |
| hypot() | Calculates the hypotenuse of a right-angle triangle |
| intdiv() | Performs integer division |
| is_finite() | Checks whether a value is finite or not |
| is_infinite() | Checks whether a value is infinite or not |
| is_nan() | Checks whether a value is ‘not-a-number’ |
| lcg_value() | Returns a pseudo random number in a range between 0 and 1 |
| log() | Returns the natural logarithm of a number |
| log10() | Returns the base-10 logarithm of a number |
| log1p() | Returns log(1+number) |
| max() | Returns the highest value in an array, or the highest value of several specified values |
| min() | Returns the lowest value in an array, or the lowest value of several specified values |
| mt_getrandmax() | Returns the largest possible value returned by mt_rand() |
| mt_rand() | Generates a random integer using Mersenne Twister algorithm |
| mt_srand() | Seeds the Mersenne Twister random number generator |
| octdec() | Converts an octal number to a decimal number |
| pi() | Returns the value of PI |
| pow() | Returns x raised to the power of y |
| rad2deg() | Converts a radian value to a degree value |
| rand() | Generates a random integer |
| round() | Rounds a floating-point number |
| sin() | Returns the sine of a number |
| sinh() | Returns the hyperbolic sine of a number |
| sqrt() | Returns the square root of a number |
| srand() | Seeds the random number generator |
| tan() | Returns the tangent of a number |
| tanh() | Returns the hyperbolic tangent of a number |
Misc Functions
| Function | Description |
|---|---|
| connection_aborted() | Checks whether the client has disconnected |
| connection_status() | Returns the current connection status |
| connection_timeout() | Deprecated from PHP 4.0.5. Checks whether the script has timed out |
| constant() | Returns the value of a constant |
| define() | Defines a constant |
| defined() | Checks whether a constant exists |
| die() | Alias of exit() |
| eval() | Evaluates a string as PHP code |
| exit() | Prints a message and exits the current script |
| get_browser() | Returns the capabilities of the user’s browser |
| halt_compiler() | Halts the compiler execution |
| highlight_file() | Outputs a file with the PHP syntax highlighted |
| highlight_string() | Outputs a string with the PHP syntax highlighted |
| hrtime() | Returns the system’s high resolution time |
| ignore_user_abort() | Sets whether a remote client can abort the running of a script |
| pack() | Packs data into a binary string |
| php_strip_whitespace() | Returns the source code of a file with PHP comments and whitespace removed |
| show_source() | Alias of highlight_file() |
| sleep() | Delays code execution for a number of seconds |
| sys_getloadavg() | Returns the system load average |
| time_nanosleep() | Delays code execution for a number of seconds and nanoseconds |
| time_sleep_until() | Makes a script sleep until the specified time |
| uniqid() | Generates a unique ID |
| unpack() | Unpacks data from a binary string |
| usleep() | Delays code execution for a number of microseconds |
MySQLi Functions
| Function | Description |
|---|---|
| mysqli_affected_rows() | Returns the number of affected rows in the previous MySQL operation |
| mysqli_autocommit() | Turns on or off auto-committing database modifications |
| mysqli_begin_transaction() | Starts a transaction |
| mysqli_change_user() | Changes the user of the specified database connection |
| mysqli_character_set_name() | Returns the default character set for the database connection |
| mysqli_close() | Closes a previously opened database connection |
| mysqli_commit() | Commits the current transaction |
| mysqli_connect_errno() | Returns the error code from the last connection error |
| mysqli_connect_error() | Returns the error description from the last connection error |
| mysqli_connect() | Opens a new connection to the MySQL server |
| mysqli_data_seek() | Adjusts the result pointer to an arbitrary row in the result-set |
| mysqli_debug() | Performs debugging operations |
| mysqli_dump_debug_info() | Dumps debugging info into the log |
| mysqli_errno() | Returns the last error code for the most recent function call |
| mysqli_error_list() | Returns a list of errors for the most recent function call |
| mysqli_error() | Returns the last error description for the most recent function call |
| mysqli_fetch_all() | Fetches all result rows as an associative array, a numeric array, or both |
| mysqli_fetch_array() | Fetches a result row as an associative, a numeric array, or both |
| mysqli_fetch_assoc() | Fetches a result row as an associative array |
| mysqli_fetch_field_direct() | Returns meta-data for a single field in the result set, as an object |
| mysqli_fetch_field() | Returns the next field in the result set, as an object |
| mysqli_fetch_fields() | Returns an array of objects that represent the fields in a result set |
| mysqli_fetch_lengths() | Returns the lengths of the columns of the current row in the result set |
| mysqli_fetch_object() | Returns the current row of a result set, as an object |
| mysqli_fetch_row() | Fetches one row from a result-set and returns it as an enumerated array |
| mysqli_field_count() | Returns the number of columns for the most recent query |
| mysqli_field_seek() | Sets the field cursor to the given field offset |
| mysqli_get_charset() | Returns a character set object |
| mysqli_get_client_info() | Returns the MySQL client library version |
| mysqli_get_client_stats() | Returns statistics about client per-process |
| mysqli_get_client_version() | Returns the MySQL client library version as an integer |
| mysqli_get_connection_stats() | Returns statistics about the client connection |
| mysqli_get_host_info() | Returns the MySQL server hostname and the connection type |
| mysqli_get_proto_info() | Returns the MySQL protocol version |
| mysqli_get_server_info() | Returns the MySQL server version |
| mysqli_get_server_version() | Returns the MySQL server version as an integer |
| mysqli_info() | Returns information about the most recently executed query |
| mysqli_init() | Initializes MySQLi and returns a resource for use with mysqli_real_connect() |
| mysqli_insert_id() | Returns the auto-generated id used in the last query |
| mysqli_kill() | Asks the server to kill a MySQL thread |
| mysqli_more_results() | Checks if there are more results from a multi query |
| mysqli_multi_query() | Performs one or more queries on the database |
| mysqli_next_result() | Prepares the next result set from mysqli_multi_query() |
| mysqli_options() | Sets extra connect options and affect behavior for a connection |
| mysqli_ping() | Pings a server connection, or tries to reconnect if the connection has gone down |
| mysqli_prepare() | Prepares an SQL statement for execution |
| mysqli_query() | Performs a query against the database |
| mysqli_real_connect() | Opens a new connection to the MySQL server |
| mysqli_real_escape_string() | Escapes special characters in a string for use in an SQL statement |
| mysqli_real_query() | Executes an SQL query |
| mysqli_reap_async_query() | Returns the result from async query |
| mysqli_refresh() | Refreshes tables or caches, or resets the replication server information |
| mysqli_rollback() | Rolls back the current transaction for the database |
| mysqli_select_db() | Changes the default database for the connection |
| mysqli_set_charset() | Sets the default client character set |
| mysqli_set_local_infile_default() | Unsets user defined handler for load local infile command |
| mysqli_set_local_infile_handler() | Set callback function for LOAD DATA LOCAL INFILE command |
| mysqli_sqlstate() | Returns the SQLSTATE error code for the last MySQL operation |
| mysqli_ssl_set() | Used to establish secure connections using SSL |
| mysqli_stat() | Returns the current system status |
| mysqli_stmt_init() | Initializes a statement and returns an object for use with mysqli_stmt_prepare() |
| mysqli_store_result() | Transfers a result set from the last query |
| mysqli_thread_id() | Returns the thread ID for the current connection |
| mysqli_thread_safe() | Returns whether the client library is compiled as thread-safe |
| mysqli_use_result() | Initiates the retrieval of a result set from the last query executed using the mysqli_real_query() |
| mysqli_warning_count() | Returns the number of warnings from the last query in the connection |
Network Functions
| Function | Description |
|---|---|
| checkdnsrr() | Checks DNS records for type corresponding to host |
| closelog() | Closes the connection of system logger |
| define_syslog_variables() | Deprecated and removed in PHP 5.4. Initializes the variables used in syslog functions |
| dns_check_record() | Alias of checkdnsrr() |
| dns_get_mx() | Alias of getmxrr() |
| dns_get_record() | Gets the DNS resource records associated with the specified hostname |
| fsockopen() | Opens an Internet or Unix domain socket connection |
| gethostbyaddr() | Returns the domain name for a given IP address |
| gethostbyname() | Returns the IPv4 address for a given domain/host name |
| gethostbynamel() | Returns a list of IPv4 address for a given domain/host name |
| gethostname() | Returns the host name |
| getmxrr() | Returns the MX records for the specified internet host name |
| getprotobyname() | Returns the protocol number for a given protocol name |
| getprotobynumber() | Returns the protocol name for a given protocol number |
| getservbyname() | Returns the port number for a given Internet service and protocol |
| getservbyport() | Returns the Internet service for a given port and protocol |
| header_register_callback() | Calls a header function |
| header_remove() | Removes an HTTP header previously set with the header() function |
| header() | Sends a raw HTTP header to a client |
| headers_list() | Returns a list of response headers to be sent to the browser |
| headers_sent() | Checks if/where headers have been sent |
| http_response_code() | Sets or returns the HTTP response status code |
| inet_ntop() | Converts a 32bit IPv4 or 128bit IPv6 address into a readable format |
| inet_pton() | Converts a readable IP address into a packed 32bit IPv4 or 128bit IPv6 format |
| ip2long() | Converts an IPv4 address into a long integer |
| long2ip() | Converts a long integer address into a string in IPv4 format |
| openlog() | Opens the connection of system logger |
| pfsockopen() | Opens a persistent Internet or Unix domain socket connection |
| setcookie() | Defines a cookie to be sent along with the rest of the HTTP headers |
| setrawcookie() | Defines a cookie (without URL encoding) to be sent along with the rest of the HTTP headers |
| socket_get_status() | Alias of stream_get_meta_data() |
| socket_set_blocking() | Alias of stream_set_blocking() |
| socket_set_timeout() | Alias of stream_set_timeout() |
| syslog() | Generates a system log message |
SimpleXML Functions
| Function | Description |
|---|---|
| construct() | Creates a new SimpleXMLElement object |
| toString() | Returns the string content of an element |
| addAttribute() | Appends an attribute to the SimpleXML element |
| addChild() | Appends a child element the SimpleXML element |
| asXML() | Returns a well-formed XML string (XML version 1.0) from a SimpleXML object |
| attributes() | Returns the attributes/values of an element |
| children() | Returns the children of a specified node |
| count() | Counts the children of a specified node |
| getDocNamespaces() | Returns the namespaces declared in document |
| getName() | Returns the name of an element |
| getNamespaces() | Returns the namespaces used in document |
| registerXPathNamespace() | Creates a namespace context for the next XPath query |
| saveXML() | Alias of asXML() |
| simplexml_import_dom() | Returns a SimpleXMLElement object from a DOM node |
| simplexml_load_file() | Converts an XML document to an object |
| simplexml_load_string() | Converts an XML string to an object |
| xpath() | Runs an XPath query on XML data |
SimpleXML Iteration Functions
| Function | Description |
|---|---|
| current() | Returns the current element |
| getChildren() | Returns the child elements of the current element |
| hasChildren() | Checks whether the current element has children |
| key() | Returns the XML tag name of the current element |
| next() | Moves to the next element |
| rewind() | Rewinds to the first element |
| valid() | Checks whether the current element is valid |
String Functions
| Function | Description |
|---|---|
| addcslashes() | Returns a string with backslashes in front of the specified characters |
| addslashes() | Returns a string with backslashes in front of predefined characters |
| bin2hex() | Converts a string of ASCII characters to hexadecimal values |
| chop() | Removes whitespace or other characters from the right end of a string |
| chr() | Returns a character from a specified ASCII value |
| chunk_split() | Splits a string into a series of smaller parts |
| convert_cyr_string() | Converts a string from one Cyrillic character-set to another |
| convert_uudecode() | Decodes a uuencoded string |
| convert_uuencode() | Encodes a string using the uuencode algorithm |
| count_chars() | Returns information about characters used in a string |
| crc32() | Calculates a 32-bit CRC for a string |
| crypt() | One-way string hashing |
| echo() | Outputs one or more strings |
| explode() | Breaks a string into an array |
| fprintf() | Writes a formatted string to a specified output stream |
| get_html_translation_table() | Returns the translation table used by htmlspecialchars() and htmlentities() |
| hebrev() | Converts Hebrew text to visual text |
| hebrevc() | Converts Hebrew text to visual text and new lines (\n) into <br> |
| hex2bin() | Converts a string of hexadecimal values to ASCII characters |
| html_entity_decode() | Converts HTML entities to characters |
| htmlentities() | Converts characters to HTML entities |
| htmlspecialchars_decode() | Converts some predefined HTML entities to characters |
| htmlspecialchars() | Converts some predefined characters to HTML entities |
| implode() | Returns a string from the elements of an array |
| join() | Alias of implode() |
| lcfirst() | Converts the first character of a string to lowercase |
| levenshtein() | Returns the Levenshtein distance between two strings |
| localeconv() | Returns locale numeric and monetary formatting information |
| ltrim() | Removes whitespace or other characters from the left side of a string |
| md5() | Calculates the MD5 hash of a string |
| md5_file() | Calculates the MD5 hash of a file |
| metaphone() | Calculates the metaphone key of a string |
| money_format() | Returns a string formatted as a currency string |
| nl_langinfo() | Returns specific local information |
| nl2br() | Inserts HTML line breaks in front of each newline in a string |
| number_format() | Formats a number with grouped thousands |
| ord() | Returns the ASCII value of the first character of a string |
| parse_str() | Parses a query string into variables |
| print() | Outputs one or more strings |
| printf() | Outputs a formatted string |
| quoted_printable_decode() | Converts a quoted-printable string to an 8-bit string |
| quoted_printable_encode() | Converts an 8-bit string to a quoted printable string |
| quotemeta() | Quotes meta characters |
| rtrim() | Removes whitespace or other characters from the right side of a string |
| setlocale() | Sets locale information |
| sha1() | Calculates the SHA-1 hash of a string |
| sha1_file() | Calculates the SHA-1 hash of a file |
| similar_text() | Calculates the similarity between two strings |
| soundex() | Calculates the soundex key of a string |
| sprintf() | Writes a formatted string to a variable |
| sscanf() | Parses input from a string according to a format |
| str_getcsv() | Parses a CSV string into an array |
| str_ireplace() | Replaces some characters in a string (case-insensitive) |
| str_pad() | Pads a string to a new length |
| str_repeat() | Repeats a string a specified number of times |
| str_replace() | Replaces some characters in a string (case-sensitive) |
| str_rot13() | Performs the ROT13 encoding on a string |
| str_shuffle() | Randomly shuffles all characters in a string |
| str_split() | Splits a string into an array |
| str_word_count() | Count the number of words in a string |
| strcasecmp() | Compares two strings (case-insensitive) |
| strchr() | Finds the first occurrence of a string inside another string (alias of strstr()) |
| strcmp() | Compares two strings (case-sensitive) |
| strcoll() | Compares two strings (locale based string comparison) |
| strcspn() | Returns the number of characters found in a string before any part of some specified characters are found |
| strip_tags() | Strips HTML and PHP tags from a string |
| stripcslashes() | Unquotes a string quoted with addcslashes() |
| stripslashes() | Unquotes a string quoted with addslashes() |
| stripos() | Returns the position of the first occurrence of a string inside another string (case-insensitive) |
| stristr() | Finds the first occurrence of a string inside another string (case-insensitive) |
| strlen() | Returns the length of a string |
| strnatcasecmp() | Compares two strings using a “natural order” algorithm (case-insensitive) |
| strnatcmp() | Compares two strings using a “natural order” algorithm (case-sensitive) |
| strncasecmp() | String comparison of the first n characters (case-insensitive) |
| strncmp() | String comparison of the first n characters (case-sensitive) |
| strpbrk() | Searches a string for any of a set of characters |
| strpos() | Returns the position of the first occurrence of a string inside another string (case-sensitive) |
| strrchr() | Finds the last occurrence of a string inside another string |
| strrev() | Reverses a string |
| strripos() | Finds the position of the last occurrence of a string inside another string (case-insensitive) |
| strrpos() | Finds the position of the last occurrence of a string inside another string (case-sensitive) |
| strspn() | Returns the number of characters found in a string that contains only characters from a specified charlist |
| strstr() | Finds the first occurrence of a string inside another string (case-sensitive) |
| strtok() | Splits a string into smaller strings |
| strtolower() | Converts a string to lowercase letters |
| strtoupper() | Converts a string to uppercase letters |
| strtr() | Translates certain characters in a string |
| substr() | Returns a part of a string |
| substr_compare() | Compares two strings from a specified start position (binary safe and optionally case-sensitive) |
| substr_count() | Counts the number of times a substring occurs in a string |
| substr_replace() | Replaces a part of a string with another string |
| trim() | Removes whitespace or other characters from both sides of a string |
| ucfirst() | Converts the first character of a string to uppercase |
| ucwords() | Converts the first character of each word in a string to uppercase |
| vfprintf() | Writes a formatted string to a specified output stream |
| vprintf() | Outputs a formatted string |
| vsprintf() | Writes a formatted string to a variable |
| wordwrap() | Wraps a string to a given number of characters |
XML Parser Functions
| Function | Description |
|---|---|
| utf8_decode() | Decodes an UTF-8 string to ISO-8859-1 |
| utf8_encode() | Encodes an ISO-8859-1 string to UTF-8 |
| xml_error_string() | Returns an error string from the XML parser |
| xml_get_current_byte_index() | Returns the current byte index from the XML parser |
| xml_get_current_column_number() | Returns the current column number from the XML parser |
| xml_get_current_line_number() | Returns the current line number from the XML parser |
| xml_get_error_code() | Returns an error code from the XML parser |
| xml_parse() | Parses an XML document |
| xml_parse_into_struct() | Parses XML data into an array |
| xml_parser_create_ns() | Creates an XML parser with namespace support |
| xml_parser_create() | Creates an XML parser |
| xml_parser_free() | Frees an XML parser |
| xml_parser_get_option() | Returns options from an XML parser |
| xml_parser_set_option() | Sets options in an XML parser |
| xml_set_character_data_handler() | Sets up the character data handler for the XML parser |
| xml_set_default_handler() | Sets up the default data handler for the XML parser |
| xml_set_element_handler() | Sets up start and end element handlers for the XML parser |
| xml_set_end_namespace_decl_handler() | Sets up the end namespace declaration handler |
| xml_set_external_entity_ref_handler() | Sets up the external entity reference handler for the XML parser |
| xml_set_notation_decl_handler() | Sets up notation declaration handler for the XML parser |
| xml_set_object() | Allows to use XML parser within an object |
| xml_set_processing_instruction_handler() | Sets up processing instruction handler |
| xml_set_start_namespace_decl_handler() | Sets up the start namespace declaration handler |
| xml_set_unparsed_entity_decl_handler() | Sets handler function for unparsed entity declarations |
Zip Functions
| Function | Description |
|---|---|
| zip_close() | Closes a ZIP file archive |
| zip_entry_close() | Closes a ZIP directory entry |
| zip_entry_compressedsize() | Returns the compressed file size of a ZIP directory entry |
| zip_entry_compressionmethod() | Returns the compression method of a ZIP directory entry |
| zip_entry_filesize() | Returns the actual file size of a ZIP directory entry |
| zip_entry_name() | Returns the name of a ZIP directory entry |
| zip_entry_open() | Opens a directory entry in a ZIP file for reading |
| zip_entry_read() | Reads from an open directory entry in the ZIP file |
| zip_open() | Opens a ZIP file archive |
| zip_read() | Reads the next file in a open ZIP file archive |
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