Documentation
Handy features
1
PHP contains a surprisingly large number of handy features of all kinds, which are especially appreciated by advanced developers. This page provides a basic overview and examples of their use.
Field
13
PHP function cosh()2021-04-10T16:59:20.000Z
Availability in versions: PHP 4.1.0 Hyperbolic cosine Parameters Parameter Data type Default value Note $arg float not Argument to process Return values float The hyperbolic cosine of arg Other resources Official documentation of the cosh function
PHP function nl2br()2020-02-16T17:48:19.000Z
This function converts line breaks (\n) in a string to the HTML tag <br>. Parameters Parameter Data type Default value Note $string string not Input string. $is_xhtml bool null Switches the escaping method according to the context. Detailed des…
PHP function acos()2020-02-16T15:41:10.000Z
Availability in PHP 4.0 Arcus cosinus (arcus cosinus). The function returns the arcus cosine of the parameter $arg in radians. The acos() function is the inverse of the cos() function, which means that $a === cos(acos($a)) (note the rounding!) for ev…
PHP function imagescale()2020-02-16T15:23:15.000Z
Availability in versions: PHP 5.5.0 Rescales (resizes) the image to the given width and height. Parameters Parameter Data type Default value Note $image resource not The source of the image (data type resource) that you get by one of the functions to…
PHP function htmlspecialchars - escaping characters2019-11-26T10:56:35.000Z
Available in PHP 4, 5, 7. Converts special characters that have meaning in HTML to HTML entities that can be rendered in the normal way. Parameters Parameter Data type Default value Note $string string not String to be converted. $flags int ENT_COMPA…
PHP function getimagesize - image size2019-11-26T10:56:18.000Z
This function returns the physical dimensions of the image. Parameters Parameter Data type Default value Note $filename string not This parameter specifies the file you wish to retrieve information about. It can reference a local file or (configurati…
PHP function var_export()2019-10-07T08:28:27.000Z
Available from: PHP 4.2.0 This function returns a string that represents the inserted variable as if it were written in a PHP script. The output can be used directly for a PHP parser. Parameters Parameter Data type Default value Note $expression mixe…
PHP function mail()2019-09-16T06:51:41.000Z
The mail() function sends an e-mail message through the default server configuration. To work correctly, the function needs to be enabled on the server and the mail server needs to be configured for sending. The function is for sending only. You have…
PHP function fsockopen()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Open Internet or Unix domain socket connection Parameters Parameter Data type Default value Note $hostname string not If you have compiled in OpenSSL support, you may prefix the hostname with either ssl:// or tls:// to use an…
PHP function chmod()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Sets file access rights (read, write, delete). Parameters Parameter Data type Default value Note $filename string not File path (absolute is recommended) $mode int not Access rights (for example 0777 - everyone has access). No…
PHP function substr_replace()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Replacing text in part of a string Parameters Parameter Data type Default value Note $string mixed not String being processed. $replacement string not Replacement string. $start int not If start is positive, the replacement wi…
PHP function scandir()2019-09-11T08:04:04.000Z
Availability in PHP 5.0 List files and directories inside the specified path Parameters Parameter Data type Default value Note $directory string not The directory that will be scanned. $sorting_order int null, By default, the sorted order is alphabet…
PHP function is_finite()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.2.0 Finds whether a value is a legal finite number Parameters Parameter Data type Default value Note $val float not The value to check Return values bool true if val is a legal finite number within the allowed range fo…
PHP function atan2()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Arc tangent of two variables Parameters Parameter Data type Default value Note $y float not Dividend parameter $x float not Divisor parameter Return values float The arc tangent of y/x in radians. Other sources Official atan2…
PHP function settype()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Set the type of a variable Parameters Parameter Data type Default value Note $var mixed not The variable being converted. $type string not Possible values of type are: Return values bool Returns true on success, otherwise fals…
PHP function is_infinite()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.2.0 Finds whether a value is infinite Parameters Parameter Data type Default value Note $val float not The value to check Return values bool true if val is infinite, else false. Other resources Official is-infinite doc…
PHP function hebrevc()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Convert logical Hebrew text to visual text with newline conversion Parameters Parameter Data type Default value Note $hebrew_text string not A Hebrew input string. $max_chars_per_line int null This optional parameter indicates…
PHP function define_syslog_variables()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Initializes all syslog related variables Parameters The function has no input parameters. Return values void
PHP function ob_get_contents()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Return the contents of the output buffer Parameters The function has no input parameters. Return values string This will return the contents of the output buffer or false, if output buffering isn't active. Additional resources…
PHP function strtolower()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Make a string lowercase Parameters Parameter Data type Default value Note $str string not String being processed. Return values string the lowercased string. Other resources Official strtolower documentation
PHP function header()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Sends the HTTP header and the raw form. Parameters Parameter Data type Default value Note $string string not Header content $replace bool true, The optional replace parameter indicates whether the header should replace a previ…
PHP function cos()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Cosine Parameters Parameter Data type Default value Note $arg float not An angle in radians Return values float The cosine of arg Other resources Official documentation of the cos function
PHP function ltrim()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Strip whitespace (or other characters) from the beginning of a string Parameters Parameter Data type Default value Note $str string not String being processed. $charlist string " You can also specify the characters you want to…
PHP function asin()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Arc sine Parameters Parameter Data type Default value Note $arg float not Argument to process Return values float The arc sine of arg in radians Other resources Official documentation of the asin function
PHP function imagepalettetotruecolor()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.5.0 Converts a palette based image to true color Parameters Parameter Data type Default value Note $image resource not An image resource, returnd by one of the image creation functions, such as {@link https://www.php.n…
PHP function unpack()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Unpacking data from a binary string Parameters Parameter Data type Default value Note $format string not See package for explanation of format codes. $data string not Packaged data. $offset int not Return values array An assoc…
PHP function usleep()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Delay execution in microseconds Parameters Parameter Data type Default value Note $micro_seconds int not Halt time in micro seconds. A micro second is one millionth of a second. Return values void Other resources Official usle…
PHP function bindec()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Binary to decimal Parameters Parameter Data type Default value Note $binary_string string not The binary string to convert Return values number The decimal value of binary_string Other resources Official bindec documentation
PHP function getcwd()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Gets the current working directory Parameters The function has no input parameters. Return values string the current working directory on success, or false on failure. On some Unix variants, getcwd will return false if any one…
PHP function abs()2019-09-11T08:04:04.000Z
Available in PHP 4.0, PHP 5, PHP 7 Absolute value of the number Parameters Parameter Data type Default value Note $number mixed not Numeric conversion value $cislo = -15.4; $abs = abs($cislo); // 15.4 Returns the absolute value of the number. Return…
PHP function ini_get_all()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.2.0 Gets all configuration options Parameters Parameter Data type Default value Note $extension string null, An optional extension name. If set, the function return only options specific for that extension. $details bo…
PHP function stream_set_chunk_size()2019-09-11T08:04:04.000Z
PHP > 5.4.0 Set the stream chunk size. Parameters Parameter Data type Default value Note $fp resource not $chunk_size int not Return values int Returns the previous chunk size on success. Will return FALSE if chunk_size is less than 1 or greater t…
PHP function strtok()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Tokenize string Note that only the first call to strtok uses the string argument. Every subsequent call to strtok only needs the token to use, as it keeps track of where it is in the current string. To start over, or to tokeni…
PHP function current()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Return the current element in an array Parameters Parameter Data type Default value Note $array array not The array. Return values mixed The current function simply returns the value of the array element that's currently being…
PHP function phpversion()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Gets the current PHP version Parameters Parameter Data type Default value Note $extension string null An optional extension name. Return values string If the optional extension parameter is specified, phpversion returns the ve…
PHP function php_ini_scanned_files()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.3.0 Return a list of .ini files parsed from the additional ini dir Parameters The function has no input parameters. Return values string A comma-separated string of .ini files on success. Each comma is followed by a ne…
PHP function lcg_value()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Combined linear congruential generator Parameters The function has no input parameters. Return values float A pseudo random float value in the range of (0, 1) Other resources Official documentation of the lcg-value function
PHP function stream_socket_sendto()2019-09-11T08:04:04.000Z
Availability in PHP 5.0 Sends a message to a socket, whether it is connected or not Parameters Parameter Data type Default value Note $socket resource not The socket to send data to. $data string not The data to be sent. $flags int null, The value of…
PHP function stream_wrapper_restore()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.1.0 Restores a previously unregistered built-in wrapper Parameters Parameter Data type Default value Note $protocol string not Return values bool Returns true on success, otherwise false on failure. Other resources Off…
PHP function disk_free_space()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.1.0 Returns available space in directory Parameters Parameter Data type Default value Note $directory string not A directory of the filesystem or disk partition. Return values float |bool the number of available bytes…
PHP function is_null()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.0.4 Finds whether a variable is &null; Parameters Parameter Data type Default value Note $var mixed not The variable being evaluated. Return values bool true if var is null, false otherwise. Other resources Official is…
PHP function stream_wrapper_register()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.3.2 Register a URL wrapper implemented as a PHP class Parameters Parameter Data type Default value Note $protocol string not The wrapper name to be registered. $classname string not The classname which implements the p…
PHP function stream_resolve_include_path()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.3.2 Resolve filename against the include path according to the same rules as fopen()/include(). Parameters Parameter Data type Default value Note $filename string not Return values string |bool containing the resolved…
PHP function stream_set_timeout()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.3.0 Set timeout period on a stream Parameters Parameter Data type Default value Note $stream resource not The target stream. $seconds int not The seconds part of the timeout to be set. $microseconds int null Return val…
PHP function stream_filter_remove()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.1.0 Remove a filter from a stream Parameters Parameter Data type Default value Note $stream_filter resource not The stream filter to be removed. Return values bool Returns true on success, otherwise false on failure. O…
PHP function hexdec()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Hexadecimal to decimal Parameters Parameter Data type Default value Note $hex_string string not The hexadecimal string to convert Return values number The decimal representation of hex_string Other resources Official hexdec do…
PHP function convert_uudecode()2019-09-11T08:04:04.000Z
Availability in PHP 5.0 Decode a uuencoded string Parameters Parameter Data type Default value Note $data string not The uuencoded data. Return values string the decoded data as a string. Other resources Official documentation for convert-uudecode
PHP function socket_set_timeout()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 &Alias; stream_set_timeout Set timeout period on a stream Parameters Parameter Data type Default value Note $stream resource not The target stream. $seconds int not The seconds part of the timeout to be set. $microseconds int…
PHP function strptime()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.1.0 Parse a time/date generated with strftime Parameters Parameter Data type Default value Note $date string not The string to parse (e.g. returned from strftime) $format string not The format used in date (e.g. the sa…
PHP function readfile()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Outputs a file Parameters Parameter Data type Default value Note $filename string not The filename being read. $use_include_path bool null, You can use the optional second parameter and set it to true, if you want to search fo…
PHP function stream_get_meta_data()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.3.0 Retrieves header/meta data from streams/file pointers Parameters Parameter Data type Default value Note $stream resource not The stream can be any stream created by fopen, fsockopen and pfsockopen. Return values ar…
PHP function strval()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Get string value of a variable Parameters Parameter Data type Default value Note $var mixed not The variable that is being converted to a string. Return values string The string value of var. Other resources Official strval do…
PHP function str_ireplace()2019-09-11T08:04:04.000Z
Availability in PHP 5.0 Case-insensitive version of str_replace. Parameters Parameter Data type Default value Note $search mixed not Every replacement with search array is performed on the result of previous replacement. $replace mixed not $subject m…
PHP function stream_copy_to_stream()2019-09-11T08:04:04.000Z
Availability in PHP 5.0 Copies data from one stream to another Parameters Parameter Data type Default value Note $source resource not The source stream $dest resource not The destination stream $maxlength int null, Maximum bytes to copy $offset int n…
PHP function doubleval()2019-09-11T08:04:04.000Z
(PHP 4.2.0, PHP 5) doubleval � Alias of floatval() Get float value of a variable &Alias; floatval Parameters Parameter Data type Default value Note $var mixed not Return values float value of the given variable. Empty arrays return 0, non-empty array…
PHP function is_callable()2019-09-11T08:04:04.000Z
Version availability: PHP 4.0.6 Verify that the contents of a variable can be called as a function Parameters Parameter Data type Default value Note $name callback|callable not Can be either the name of a function stored in a string variable, or an o…
PHP function md5_file()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.2.0 Calculates the md5 hash of a given file Parameters Parameter Data type Default value Note $filename string not The filename $raw_output bool null When true, returns the digest in raw binary format with a length of…
PHP function strrev()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Reverse a string Parameters Parameter Data type Default value Note $string string not The string to be reversed. Return values string the reversed string. Other resources Official strrev documentation
PHP function syslog()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Creating a system log message Parameters Parameter Data type Default value Note $priority int not Priority is a combination of device and level. See table below for more info. $message string not The message to be sent, except…
PHP function imagesetinterpolation()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.5.0 Set the interpolation method Parameters Parameter Data type Default value Note $image resource not An image resource, returned by one of the image creation functions, such as {@link https://www.php.net/manual/en/fu…
PHP function substr()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Return part of a string Parameters Parameter Data type Default value Note $string string not String being processed. $start int not If start is non-negative, the returned string will start at the start'th position in string, c…
PHP function constant()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.0.4 Parameters Parameter Data type Default value Note $name string not The constant name. Return values int The filter() method must return one of three values upon completion. Return Value Meaning PSFS_PASS_ON Filter…
PHP function strrpos()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Find the position of the last occurrence of a substring in a string Parameters Parameter Data type Default value Note $haystack string not The string to search in. $needle string not If needle is not a string, it is converted…
PHP function set_time_limit()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Limits the maximum execution time Parameters Parameter Data type Default value Note $seconds int not The maximum execution time, in seconds. If set to zero, no time limit is imposed. Return values bool Returns TRUE on success,…
PHP function strtoupper()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Make a string uppercase Parameters Parameter Data type Default value Note $string string not String being processed. Return values string the uppercased string. Other resources Official strtoupper documentation
PHP function setlocale()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Set locale information Parameters Parameter Data type Default value Note $category int not category is a named constant specifying the category of the functions affected by the locale setting: $locale string not If locale is &…
PHP function asort()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Sort an array and maintain index association Parameters Parameter Data type Default value Note $array array not The input array. $sort_flags int null You may modify the behavior of the sort using the optional parameter sort_fl…
PHP function getlastmod()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Gets time of last page modification Parameters The function has no input parameters. Return values int the time of the last modification of the current page. The value returned is a Unix timestamp, suitable for feeding to date…
PHP function parse_ini_string()2019-09-11T08:04:04.000Z
Version availability: PHP 5.3.0 Parse a configuration string Parameters Parameter Data type Default value Note $ini string not The contents of the ini file being parsed. $process_sections bool null, By setting the process_sections parameter to true,…
PHP function popen()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Opens process file pointer Parameters Parameter Data type Default value Note $command string not The command $mode string not The mode Return values resource a file pointer identical to that returned by fopen, except that it i…
PHP function usort()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Sort an array by values using a user-defined comparison function Parameters Parameter Data type Default value Note $array array not The input array. $cmp_function callback not The comparison function must return an integer les…
PHP function basename()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Returns filename component of path Parameters Parameter Data type Default value Note $path string not A path. $suffix string null If the filename ends in suffix this will also be cut off. Return values string the base name of…
PHP function atan()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Arc tangent Parameters Parameter Data type Default value Note $arg float not Argument to process Return values float The arc tangent of arg in radians. Other resources Official documentation of the function atan
PHP function dns_check_record()2019-09-11T08:04:04.000Z
Availability in PHP 5.0 &Alias; checkdnsrr Parameters Parameter Data type Default value Note $host ??? $type ??? Return values bool Returns TRUE if any records are found; returns FALSE if no records were found or if an error occurred. Other resources…
PHP function cli_set_process_title()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.5.0 Sets the process title Parameters Parameter Data type Default value Note $title string not The new title. Return values bool TRUE on success or FALSE on failure. Other resources Official documentation for cli-set-p…
PHP function octdec()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Octal to decimal Parameters Parameter Data type Default value Note $octal_string string not The octal string to convert Return values number The decimal representation of octal_string Other resources Official octdec documentat…
PHP function connection_status()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Returns connection status bitfield Parameters The function has no input parameters. Return values int the connection status bitfield, which can be used against the CONNECTION_XXX constants to determine the connection status. O…
PHP function cosh()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.1.0 Hyperbolic cosine Parameters Parameter Data type Default value Note $arg float not Argument to process Return values float The hyperbolic cosine of arg Other resources Official documentation of the cosh function
PHP function stream_context_get_default()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.1.0 Retreive the default streams context Parameters Parameter Data type Default value Note $options array null Return values resource A stream context resource. Other resources Official documentation for stream-context…
PHP function dechex()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Decimal to hexadecimal Parameters Parameter Data type Default value Note $number int not Decimal value to convert Return values string Hexadecimal string representation of number Other resources Official dechex documentation
PHP function stream_get_transports()2019-09-11T08:04:04.000Z
Availability in PHP 5.0 Retrieve list of registered socket transports Parameters The function has no input parameters. Return values array an indexed array of socket transports names. Additional resources Official documentation for stream-get-transpo…
PHP function count()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Counts all elements in an array, or something in an object. For objects, if you have SPL installed, you can hook into count() by implementing interface { Parameters -------------- | Parameter | Data type | Default value | Note…
PHP function base_convert()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Convert a number between arbitrary bases Parameters Parameter Data type Default value Note $number string not The number to convert $frombase int not The base number is in $tobase int not Return values string number converted…
PHP function disk_total_space()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.1.0 Returns the total size of a directory Parameters Parameter Data type Default value Note $directory string not A directory of the filesystem or disk partition. Return values float |bool the total number of bytes as…
PHP function ip2long()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Converts a string containing an (IPv4) Internet Protocol dotted address into a proper address Parameters Parameter Data type Default value Note $ip_address string not A standard format address. Return values int the IPv4 addre…
PHP function getenv()2019-09-11T08:04:04.000Z
Available in PHP 4.0, PHP 7.1 Gets the value of an environment variable Parameters Parameter Data type Default value Note $varname string null The variable name. Return values string |array|false the value of the environment variable varname or array…
PHP function file_exists()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Checks whether a file or directory exists Parameters Parameter Data type Default value Note $filename string not Path to the file or directory. Return values bool true if the file or directory specified by filename exists; fal…
PHP function strrchr()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Find the last occurrence of a character in a string Parameters Parameter Data type Default value Note $haystack string not The string to search in $needle mixed not If needle contains more than one character, only the first is…
PHP function getrusage()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Gets the current resource usages Parameters Parameter Data type Default value Note $who int null If who is 1, getrusage will be called with RUSAGE_CHILDREN. Return values array an associative array containing the data returned…
PHP function imageflip()2019-09-11T08:04:04.000Z
Availability in versions: PHP 5.5.0 Flips an image using a given mode Parameters Parameter Data type Default value Note $image resource An image resource, returned by one of the image creation functions, such as {@link https://www.php.net/manual/en/f…
PHP function stream_set_blocking()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.3.0 Set blocking/non-blocking mode on a stream Parameters Parameter Data type Default value Note $stream resource not The stream. $mode int not If mode is 0, the given stream will be switched to non-blocking mode, and…
PHP function putenv()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Sets the value of an environment variable Parameters Parameter Data type Default value Note $setting string not The setting, like "FOO=BAR" Return values bool Returns true on success, otherwise false on failure. Other resource…
PHP function exp()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Calculates the exponent of e Parameters Parameter Data type Default value Note $arg float not Argument to process Return values float 'e' raised to the power of arg Other resources Official exp function documentation
PHP function sha1_file()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.3.0 Calculate the sha1 hash of a file Parameters Parameter Data type Default value Note $filename string not The filename $raw_output bool null When true, returns the digest in raw binary format with a length of 20. Re…
PHP function php_uname()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.0.2 Returns information about the operating system PHP is running on Parameters Parameter Data type Default value Note $mode string null Return values string The description, as a string. Other resources Official php-u…
PHP function log10()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Base-10 logarithm Parameters Parameter Data type Default value Note $arg float not Argument to process Return values float The base-10 logarithm of arg Other resources Official documentation of the log10 function
PHP function magic_quotes_runtime()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 &Alias; set_magic_quotes_runtime Parameters Parameter Data type Default value Note $new_setting ???
PHP function acosh()2019-09-11T08:04:04.000Z
Availability in versions: PHP 4.1.0 Inverse hyperbolic cosine Parameters Parameter Data type Default value Note $arg float not The value to process Return values float The inverse hyperbolic cosine of arg Other resources Official documentation of the…
PHP function gethostbyname()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Get the IPv4 address corresponding to a given Internet host name Parameters Parameter Data type Default value Note $hostname string not The host name. Return values string the IPv4 address or a string containing the unmodified…
PHP function is_file()2019-09-11T08:04:04.000Z
Availability in PHP 4.0 Tells whether the filename is a regular file Parameters Parameter Data type Default value Note $filename string not Path to the file. Return values bool true if the filename exists and is a regular file, false otherwise. Other…