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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);
Output for 4.3.0 - 7.1.0
array(5) { [0]=> string(9) "prijs[]=0" [1]=> string(11) "prijs[]=209" [2]=> string(13) "orderby=price" [3]=> string(15) "order=undefined" [4]=> string(24) "posts_per_page=undefined" }