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run code in 150+ php & hhvm versions
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<?php $_arr = array('test1', 'test2', 'test3'); $_string = 'TestWalk'; print "<pre>"; print_r(array_map(function($_arr) { return 'TestWalk' . $_arr; }, $_arr)); //print_r(array_walk($_arr, function(&$item1, $key, $prefix) { return $prefix . $item1; }), $_string);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<pre>Array ( [0] => TestWalktest1 [1] => TestWalktest2 [2] => TestWalktest3 )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/4Q96O on line 5
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/4Q96O on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/4Q96O on line 5
Process exited with code 255.