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<?php $array_1 = explode(" ", $str1); $array_2 = explode(" ", $str1); echo count(array_diff($array_1, $array_2));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $str1 in /in/Wkj9Q on line 2 Deprecated: explode(): Passing null to parameter #2 ($string) of type string is deprecated in /in/Wkj9Q on line 2 Warning: Undefined variable $str1 in /in/Wkj9Q on line 3 Deprecated: explode(): Passing null to parameter #2 ($string) of type string is deprecated in /in/Wkj9Q on line 3 0

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