3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'foo=val&bar[]=1&bar[]=2&bar[]=3&baz[key1]=val1&baz[key2]=val2&baz[key3]=val3'; // this emulates how $_POST and $_GET are decoded parse_str($str, $arr); var_dump($arr);

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