php man page for openssl_decrypt

OPENSSL_DECRYPT(3)							 1							OPENSSL_DECRYPT(3)

openssl_decrypt - Decrypts data

SYNOPSIS
       string openssl_decrypt (string  $data, string  $method, string  $password, [int	$options], [string  $iv = ""])

DESCRIPTION
	Takes a raw or base64 encoded string and decrypts it using a given method and key.

       Warning

	      This function is currently not documented; only its argument list is available.

PARAMETERS
	      o $data
		- The data.

	      o $method
		- The cipher method.

	      o $password
		- The password.

	      o $options
		-$options can be one of OPENSSL_RAW_DATA, OPENSSL_ZERO_PADDING.

	      o $iv
		- A non-NULL Initialization Vector.

RETURN VALUES
	The decrypted string on success or FALSE on failure.

ERRORS
/EXCEPTIONS
	Emits an E_WARNING level error if an unknown cipher algorithm is passed via the $method parameter.

	Emits an E_WARNING level error if an empty value is passed in via the $iv parameter.

CHANGELOG
       +--------+-------------------------------------------+
       |Version |					    |
       |	|					    |
       |	|		 Description		    |
       |	|					    |
       +--------+-------------------------------------------+
       | 5.3.3	|					    |
       |	|					    |
       |	|	 The $iv parameter was added.	    |
       |	|					    |
       | 5.4.0	|					    |
       |	|					    |
       |	|  The $raw_output was changed to $options. |
       |	|					    |
       +--------+-------------------------------------------+
SEE ALSO
       openssl_encrypt(3).

PHP Documentation Group 													OPENSSL_DECRYPT(3)