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run code in 150+ php & hhvm versions
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<?php // split the phrase by any number of commas or space characters, // which include " ", \r, \t, \n and \f $keywords = preg_split("/\+/", "MN+DT"); print_r($keywords); ?>
Output for 4.3.0 - 7.1.0
Array ( [0] => MN [1] => DT )