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<?php function revert($str) { $revertStr = ''; foreach ($obtainStrList as $obtainStr) { $revertStr .= ' '; for ($i = 1; $i < mb_strlen($obtainStr) + 1; $i++) { $revertStr .= mb_substr($obtainStr, -$i, 1); } } return $revertStr; } //echo revert('Delivery Club, ZakaZaka'); var_dump(preg_match_all('/\w+/', $str, $obtainStrList));
Output for git.master_jit, git.master, rfc.property-hooks
Warning: Undefined variable $str in /in/HSDn8 on line 19 Deprecated: preg_match_all(): Passing null to parameter #2 ($subject) of type string is deprecated in /in/HSDn8 on line 19 int(0)

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