3v4l.org

run code in 300+ PHP versions simultaneously
<?php $f = array( 'this' => 'is', 'so' => 'fricken' 'awesome' => 'man'); echo key($f);
Output for 5.4.0 - 5.4.39
Parse error: syntax error, unexpected ''awesome'' (T_CONSTANT_ENCAPSED_STRING), expecting ')' in /in/jN3jM on line 6
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 T_CONSTANT_ENCAPSED_STRING, expecting ')' in /in/jN3jM on line 6
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_CONSTANT_ENCAPSED_STRING, expecting ')' in /in/jN3jM on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/jN3jM on line 6
Process exited with code 255.

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