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run code in 150+ php & hhvm versions
Bugs & Features
<?php // Everything you enter here will be executed by our servers. Try it! $array = array(1, 2, 3, '{1}', '{2}', '{3}', '[1]', '[2]', '[3]'); $filtered_array = array_filter( $array, function( $el) { return preg_match( '/^\[\d+\]$/', $el); }); foreach( $filtered_array as $number) echo $number . "\n";
Output for 5.3.0 - 7.1.0
[1] [2] [3]
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/i6m5g on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/i6m5g on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/i6m5g on line 4
Process exited with code 255.