base64_decode(3) [php man page]

BASE64_DECODE(3)							 1							  BASE64_DECODE(3)

base64_decode - Decodes data encoded with MIME base64

SYNOPSIS

       string base64_decode (string  $data, [bool  $strict = false])

DESCRIPTION

	Decodes a base64 encoded $data.

PARAMETERS

	      o $data
		- The encoded data.

	      o $strict
		- Returns FALSE if input contains character from outside the base64 alphabet.

RETURN VALUES

	Returns the original data or FALSE on failure. The returned data may be binary.

CHANGELOG

       +--------+---------------+
       |Version |		|
       |	|		|
       |	|  Description	|
       |	|		|
       +--------+---------------+
       | 5.2.0	|		|
       |	|		|
       |	| $strict added |
       |	|		|
       +--------+---------------+
EXAMPLES

       Example #1

	      base64_decode(3) example

	      <?php
	      $str = 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==';
	      echo base64_decode($str);
	      ?>

	      The above example will output:

	      This is an encoded string

SEE ALSO

       base64_encode(3), RFC 2045 section 6.8.

PHP Documentation Group 													  BASE64_DECODE(3)

HEX2BIN(3)								 1								HEX2BIN(3)

hex2bin - Decodes a hexadecimally encoded binary string

SYNOPSIS

       string hex2bin (string  $data)

DESCRIPTION

	Decodes a hexadecimally encoded binary string.

       Caution

	       This function does NOT convert a hexadecimal number to a binary number. This can be done using the base_convert(3) function.

PARAMETERS

	      o $data
		- Hexadecimal representation of data.

RETURN VALUES

	Returns the binary representation of the given data or FALSE on failure.

ERRORS
/EXCEPTIONS
	If the hexadecimal input string is of odd length or invalid hexadecimal string an E_WARNING level error is thrown.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.5.1	|						    |
       |	|						    |
       |	|  A  warning  is  thrown  if  the  input string is |
       |	| invalid hexadecimal string.			    |
       |	|						    |
       | 5.4.1	|						    |
       |	|						    |
       |	|  A warning is thrown if the input  string  is  of |
       |	| odd  length. In PHP 5.4.0 the string was silently |
       |	| accepted, but the last byte was truncated.	    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      hex2bin(3) example

	      <?php
	      $hex = hex2bin("6578616d706c65206865782064617461");
	      var_dump($hex);
	      ?>

	      The above example will output something similar to:

	      string(16) "example hex data"

SEE ALSO

       bin2hex(3), unpack(3).

PHP Documentation Group 														HEX2BIN(3)