Rechercher une fonction PHP

hex2bin

(PHP 5 >= 5.4.0, PHP 7)

hex2binDecodes a hexadecimally encoded binary string

Description

hex2bin ( string $data ) : string

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() function.

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Parameters

data

Hexadecimal representation of data.

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Return Values

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

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Errors/Exceptions

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

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Changelog

Version Description
5.5.1 A warning is thrown if the input string is invalid hexadecimal string.
5.4.4 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.

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Examples

Example #1 hex2bin() example

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

The above example will output something similar to:

string(16) "example hex data"

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See Also

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

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Document created the 30/01/2003, last modified the 26/10/2018
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References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

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