<?php function wrapper($array, $callback) { foreach ($array as $item) { $callback($item); } } $data = [1, 2, 3, 4, 5]; $i = 1; wrapper($data, function($item) use ($i) { $tmp = $item + $i; echo $tmp . PHP_EOL; $i++; }); echo PHP_EOL; wrapper($data, function($item) use (&$i) { $tmp = $item + $i; echo $tmp . PHP_EOL; $i++; });
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