memory leak

memory_leak.php

<?php

class Foo {
    static function throw_exception_maybe()
    {
        if(rand(0, 10) < 3) {
            throw new Exception();
        }
        return 'xxx';
    }
}

while(true) {
    gc_collect_cycles();
    for($i = 0;$i < 10000;$i ++ ) {
        try {
            $x = [
                'no_memory_leak_if_comment_out_this_line' => 1,
                'xxx' => Foo::throw_exception_maybe(),
            ];
        } catch (Exception $e) {
        }
    }

    printf("%5.3fM\n", memory_get_usage() / (1000 * 1000)); // byte => Mbyte
}