(PHP 5 >= 5.3.0, PHP 7) Returns previous Exception final public Exception Exception::getPrevious ( void ) Returns previous Exception (the third parameter of Exception::__construct()). Returns: Returns the previous Exception if available or NULL otherwise. Examples: Exception::getPrevious() example Looping over, and prin

(PHP 4, PHP 5, PHP 7) Returns an array with the name of the defined classes array get_declared_classes ( void ) Gets the declared classes. Returns: Returns an array of the names of the declared classes in the current script. Note: Note that depending on what extensions you have compiled or loaded into PHP, additional classes could be present. This means that you will not be able to define your

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Compress a string into bzip2 encoded data mixed bzcompress ( string $source [, int $blocksize = 4 [, int $workfactor = 0 ]] ) bzcompress() compresses the given string and returns it as bzip2 encoded data. Parameters: source The string to compress. blocksize Specifies the blocksize used during compress

(PHP 4, PHP 5, PHP 7) Tells whether the filename is executable bool is_executable ( string $filename ) Tells whether the filename is executable. Parameters: filename Path to the file. Returns: Returns TRUE if the filename exists and is executable, or FALSE on error. Exception: Upon failure, an E_WARNING is emitte

(PECL fann >= 1.0.0) Give each connection a random weight between min_weight and max_weight bool fann_randomize_weights ( resource $ann, float $min_weight, float $max_weight ) Give each connection a random weight between min_weight and max_weight From the beginning the weights are random between -0.1 and 0.1. Parameters: ann Neural network resource.

(PHP >= 5.3.0, PECL phar >= 2.0.0) Decompresses the current Phar entry within the phar public bool PharFileInfo::decompress ( void ) This method decompresses the file inside the Phar archive. Depending on how the file is compressed, the bzip2 or zlib extensions must be enabled to take advantage of this feature. As with all functionality that modifies the contents of a phar, the phar.readonly INI variable must be off in

(PHP 5, PHP 7) Initialize and start embedded server bool mysqli_driver::embedded_server_start ( bool $start, array $arguments, array $groups ) Object oriented style Procedural style bool mysqli_embedded_server_start ( bool $start , array $arguments , array $groups ) This function is currently not documented; only its argument list is available.

(PHP 4, PHP 5, PHP 7) Exponential expression number pow ( number $base, number $exp ) Returns base raised to the power of exp. Note: In PHP 5.6 onwards, you may prefer to use the ** operator. Parameters: base The base to use exp The exponent Returns: base raised to the power of exp. If both arguments are n

(PHP 5, PHP 7) Execute a maintenance command on the database server bool ibase_maintain_db ( resource $service_handle, string $db, int $action [, int $argument = 0 ] ) Returns: Returns TRUE on success or FALSE on failure. This function is currently not documented; only its argument list is available.

(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0) Create new xmlwriter using memory for string output bool XMLWriter::openMemory ( void ) Object oriented style Procedural style resource xmlwriter_open_memory ( void ) Creates a new XMLWriter using memory for string output. Returns: Object oriented style: Returns TRUE on success or FALSE on failure. Procedural style: Returns a new xmlwriter