hexdec() – Convert Hexadecimal Strings to Decimal in PHP
hexdec() is a PHP built‑in function that converts a hexadecimal string to its decimal value, ignoring any non‑hex characters, and returns the corresponding integer; the article explains its syntax, parameters, return value, and provides example code demonstrating conversions such as "See" and "a0".
hexdec() is a PHP built‑in function that converts a hexadecimal string to its decimal equivalent, ignoring any characters that are not valid hexadecimal digits.
Parameters $hex_string – the hexadecimal string to be converted.
Return value
Returns the decimal representation of the provided hexadecimal string.
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)"
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