3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['a' =>, 'b' => 2]; echo $arr['a'] ? $arr['a'] : $arr['b'];
Output for 5.4.0 - 5.4.14
Parse error: syntax error, unexpected ',' in /in/P7vE6 on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.24
Parse error: syntax error, unexpected '[' in /in/P7vE6 on line 2
Process exited with code 255.

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