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<?php $attrPattern = '/([a-z0-9-]*)=(["\']??)([^"\']*?)\\2/siU'; $attr = 'target="_parent" data-bar="baz" data-foo'; preg_match_all($attrPattern, $attr, $matches, PREG_SET_ORDER); var_dump($matches);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(4) { [0]=> string(16) "target="_parent"" [1]=> string(6) "target" [2]=> string(1) """ [3]=> string(7) "_parent" } [1]=> array(4) { [0]=> string(14) "data-bar="baz"" [1]=> string(8) "data-bar" [2]=> string(1) """ [3]=> string(3) "baz" } }