3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($f = 0; $f <= 20; $f++) { for($n = $f+1; $n <= 21; $n++) { Echo $n."\n"; }
Output for 5.4.0 - 5.4.34
Parse error: syntax error, unexpected end of file in /in/hL3XX on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected $end in /in/hL3XX on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected $ in /in/hL3XX on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/hL3XX on line 5
Process exited with code 255.
preferences:
212.23 ms | 1394 KiB | 124 Q