<?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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