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$keep = explode(',', $coleta_keywords_final); $coleta_keywords_final = implode(" , ", $keep); $words = explode(',',$coleta_keywords_final); $result = array(); foreach($words as $word) if(!eregi('[^a-z]',$word) or !eregi('[^0-9]',$word)) $result=$word; $coleta_keywords_final = implode(',',$result); echo "<br> $coleta_keywords_final <br>";
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