<?php $empty_func = function($a) {}; $new_arr = array_map(function($a) { return $a[0]; }, $argv); $callback = function($b) { return $b['id']; }; $long_callback = function($c) use ($d, &$e) { return $c['id']; }; function doSomething($a, $b) { echo 'Hello world!'; }
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