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<?php $str = 'prijs[]=0&prijs[]=209&orderby=price&order=undefined&posts_per_page=undefined'; $array = preg_split('/[&]/' , $str); foreach ($array as $a) { $a = preg_split('/[=]/' , $a); $a[1] = preg_split('/[,]/' , $a[1]); } var_dump($array);

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