3v4l.org

run code in 300+ PHP versions simultaneously
<?php $show = array( 'mon' => false, 'tue' => false, 'wed' => false, 'thu' => false, 'fri' => false, 'sat' => false, 'sun' => false ); array_walk($show, function($x, $i) use $post { $x = true; // in your case $x = isset($post[$i]); }); var_dump($show);
Output for 5.4.0 - 5.4.40, 5.5.24, 5.6.8
Parse error: syntax error, unexpected '$post' (T_VARIABLE), expecting '(' in /in/ltCSn on line 13
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE, expecting '(' in /in/ltCSn on line 13
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 in /in/ltCSn 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 in /in/ltCSn on line 13
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ltCSn on line 13
Process exited with code 255.
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239.86 ms | 1395 KiB | 132 Q