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<?php $val = "1 , 2,3"; var_dump(explode(",", $val)); var_dump(preg_split("/\s*,\s*/", $val));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(3) { [0]=> string(2) "1 " [1]=> string(2) " 2" [2]=> string(1) "3" } array(3) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" }