3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array_combine(range(0,450),range(0,450)); echo '<pre>' print_r($array); echo '</pre>';
Output for 5.4.0 - 5.4.11
Parse error: syntax error, unexpected 'print_r' (T_STRING), expecting ',' or ';' in /in/re45L on line 4
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 - 5.3.21
Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /in/re45L on line 4
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 T_STRING, expecting ',' or ';' in /in/re45L on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `','' or `';'' in /in/re45L on line 4
Process exited with code 255.
preferences:
200.96 ms | 1395 KiB | 94 Q