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<?php $str = 'prijs=0,209&orderby=price&order=undefined&posts_per_page=undefined'; $array = preg_split('/[&]/' , $str); $filters = array(); foreach ($array as $a) { $values = preg_split('/[=]/' , $a); print_r($values); $key = $values[0]; $filters[$key][] = preg_split('/[,]/' , $values[1]); } var_dump($array);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => prijs [1] => 0,209 ) Array ( [0] => orderby [1] => price ) Array ( [0] => order [1] => undefined ) Array ( [0] => posts_per_page [1] => undefined ) array(4) { [0]=> string(11) "prijs=0,209" [1]=> string(13) "orderby=price" [2]=> string(15) "order=undefined" [3]=> string(24) "posts_per_page=undefined" }