3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = array( array( '1' => '2', '2' => '3' ), array( '1' => '3', '2' => '2' ) ); echo implode(', ', array_map(function ($entry) { return $entry[]; }, $input));
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.40, 5.5.24, 5.6.8
Fatal error: Cannot use [] for reading in /in/PKbmK on line 14
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
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/PKbmK on line 13
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_FUNCTION, expecting ')' in /in/PKbmK on line 13
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/PKbmK on line 13
Process exited with code 255.
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220.4 ms | 1395 KiB | 132 Q