3v4l.org

run code in 300+ PHP versions simultaneously
<?php $hexData = 0xA; $str = 45; $newHex = "0x".dechex($hexData).$str; echo $newHex.PHP_EOL; echo hexdec($newHex).PHP_EOL;
Output for 7.0.0 - 7.0.24, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
0xa45 2629
preferences:
161.46 ms | 408 KiB | 5 Q