hex2bin

(PHP >= 5.4.0)

hex2bin — Convert hex to binary

Opis

string hex2bin ( string $data )

Converts the hex representation of data to binary

Parametry

data: Hexadecimal representation of data.

Zwracane wartości

Returns the binary representation of the given data.

Przykłady

Przykład #1 hex2bin() example


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

Powyższy przykład wyświetli coś podobnego do:

string(16) "example hex data"

Zobacz też:

bin2hex() - Convert binary data into hexadecimal representation
unpack() - Unpack data from binary string

add a note User Contributed Notes hex2bin

Anonymous 23-Feb-2012 02:28


The function pack("H*" , $hex_string); will not work as expected if $hex_string contains an odd number of hexadecimal digits.





For example:





<?php echo ord(pack("H*", 'F')); ?>





will return 240 not 15. Use pack("H*", '0F'); instead.

Anonymous 31-Aug-2011 01:32


The function hex2bin does not exist in PHP5.

You can use 'pack' instead :



$binary_string = pack("H*" , $hex_string);

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