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run code in 150+ php & hhvm versions
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<?php $a = array("a" => "green", "b" => "brown", "c" => "blue", "red"); $b = array("a" => "green", "yellow", "red"); $c = array("c" => "blue"); print_r(array_diff_key($a, $b, $c));
based on rklZu
Output for 5.1.0 - 7.1.0
Array ( [b] => brown )
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function array_diff_key() in /in/AsRNm on line 6
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_diff_key() in /in/AsRNm on line 6
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_diff_key() in /in/AsRNm on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_diff_key() in /in/AsRNm on line 6