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run code in 150+ php & hhvm versions
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<?php $input = array( array( 'tag_name' => array('google', 'Yahoo') ), array( 'tag_name' => array('technology', 'andsuch') ) ); print_r(array_map(function ($entry) { return $entry['tag_name']; }, $input));
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [0] => google [1] => Yahoo ) [1] => Array ( [0] => technology [1] => andsuch ) )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/WvcQk on line 11
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, expecting ')' in /in/WvcQk on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/WvcQk on line 11
Process exited with code 255.