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run code in 150+ php & hhvm versions
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<?php $options = array('label' => 'test', 'label' => '', 'label' => 'test 2'); $options = array_filter($options, function($value) { return $value['label'] }); print_r($options);
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.4.17
Parse error: syntax error, unexpected '}' in /in/JKI9Q on line 5
Process exited with code 255.