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run code in 150+ php & hhvm versions
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<?php $fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); function test_print($item, $key) { echo "$key. $item. bla-bla-bla"; } echo "Before ...:\n"; array_walk($fruits, 'test_print'); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Before ...: d. lemon. bla-bla-blaa. orange. bla-bla-blab. banana. bla-bla-blac. apple. bla-bla-bla