hexdec

(PHP 4, PHP 5, PHP 7)

Hexadecimal to decimal

number hexdec ( string $hex_string )

Returns the decimal equivalent of the hexadecimal number represented by the hex_string argument. hexdec() converts a hexadecimal string to a decimal number.

hexdec() will ignore any non-hexadecimal characters it encounters.

Parameters:

hex_string

The hexadecimal string to convert

Returns:

The decimal representation of hex_string

Notes:

The function can convert numbers that are too large to fit into the platforms integer type, larger values are returned as float in that case.

Examples:

hexdec() example

<?php
var_dump(hexdec("See"));
var_dump(hexdec("ee"));
// both print "int(238)"
 
var_dump(hexdec("that")); // print "int(10)"
var_dump(hexdec("a0")); // print "int(160)"
?>