3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '\\u', PHP_EOL; echo json_decode(str_replace('\\\\u', '\u', json_encode(json_encode('\\u'))));
Output for 5.2.0, 5.2.9 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
\u
Output for 5.2.1 - 5.2.8
\u \"\\\u\"
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6
\u Fatal error: Call to undefined function json_decode() in /in/TImO5 on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.1
\u Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/TImO5 on line 3 PHP_EOL Fatal error: Call to undefined function json_decode() in /in/TImO5 on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
\u Fatal error: Call to undefined function: json_decode() in /in/TImO5 on line 4
Process exited with code 255.
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.4
\u Fatal error: Call to undefined function: json_decode() in /in/TImO5 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.9
\u Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/TImO5 on line 3 PHP_EOL Fatal error: Call to undefined function: json_decode() in /in/TImO5 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
\u Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/TImO5 on line 3 PHP_EOL Fatal error: Call to undefined function: json_decode() in /in/TImO5 on line 4
preferences:
235.13 ms | 402 KiB | 385 Q