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preg_replace('/[^a-z0-9]+/i','',$str);

jiue123
Sep 29th, 2014
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  1. preg_replace('/[^a-z0-9]+/i','',$str);
  2. --> hàm này l loại bỏ tất cả các ký tự không phải là chữ (a-z và A-Z) hoặc số (0-9) ra khỏi chuỗi $str
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