3v4l.org

run code in 300+ PHP versions simultaneously
<?php function arr() { return array( 'x' => '1x', 'y' => '1y', ); } echo arr()['x']
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected end of file, expecting ',' or ';' in /in/aUQ9E on line 12
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected '[', expecting ',' or ';' in /in/aUQ9E on line 11
Process exited with code 255.
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202.19 ms | 1395 KiB | 53 Q