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<?php $needle = array('THIS', 'test', 'hello', 'A', 'is'); $haystack = array('helloTHISisAblindtest'); foreach ($arr as $a) { $target = []; foreach ($haystack as $h) { $target = array_merge($target, explode($a, $h)); } $haystack = $target; } var_dump($haystack);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $arr in /in/AVRjf on line 7 Warning: foreach() argument must be of type array|object, null given in /in/AVRjf on line 7 array(1) { [0]=> string(21) "helloTHISisAblindtest" }

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