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run code in 300+ PHP versions simultaneously
<?php $_arr = array('test1', 'test2', 'test3'); $_string = 'TestWalk'; print "<pre>"; //print_r(array_map(function($_arr) { return 'TestWalk' . $_arr; }, $_arr)); array_walk($_arr, function(&$item1, $prefix) {$item1 = "$prefix: $item1";} , 'fruit'); print_r($_arr);

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