3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'def'; $str = '\x'.implode('\x', str_split(bin2hex($str), 2)); echo $str;
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
\x64\x65\x66
Output for 4.4.5 - 4.4.9
<br /> <b>Fatal error</b>: Call to undefined function: str_split() in <b>/in/mp5K7</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
<br /> <b>Fatal error</b>: Call to undefined function: str_split() in <b>/in/mp5K7</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1
<br /> <b>Fatal error</b>: Call to undefined function: str_split() in <b>/in/mp5K7</b> on line <b>3</b><br />

preferences:
234.59 ms | 401 KiB | 341 Q