(PHP 4, PHP 5, PHP 7)
hexdec — Hexadecimal to decimal
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.
hex_string
The hexadecimal string to convert
The decimal representation of hex_string
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. |
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)" ?>
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.
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https://www.php.net/manual/en/function.hexdec.php