hexdec
(PHP 4, PHP 5, PHP 7, PHP 8)
hexdec — Hexadecimal to decimal
Description
hexdec(string
$hex_string): int|float
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. As of PHP 7.4.0 supplying any invalid characters is deprecated.
Parameters
-
hex_string -
The hexadecimal string to convert
Return Values
The decimal representation of hex_string
Changelog
| Version | Description |
|---|---|
| 7.4.0 | Passing invalid characters will now generate a deprecation notice. The result will still be computed as if the invalid characters did not exist. |
Examples
Example #1 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)"
?>
Notes
Note:
The function can convert numbers that are too large to fit into the platforms int type, larger values are returned as float in that case.
See Also
- dechex() - Decimal to hexadecimal
- bindec() - Binary to decimal
- octdec() - Octal to decimal
- base_convert() - Convert a number between arbitrary bases
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