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<?php var_dump(preg_split('/.*/', 'int', PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY));
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0alpha1
array(3) { [0]=> string(0) "" [1]=> string(0) "" [2]=> string(0) "" }