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<?php $str = '☀+☁️+❄️'; $m = array(); preg_match_all('#(?:(?!e|ln|(?<=l|si|ta)n|pi|(?<=p)i|abs|(?<=a)bs|(?<=ab|co)s|pow|(?<=p)ow|(?<=po)w|a?(?:sin|cos|tan)|(?<=s)in|(?<=c)os|(?<=t)an)[^0-9-+*/()x])+#', $str, $m); print_r($m);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [0] => ☀ [1] => ☁️ [2] => ❄️ ) )

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