A.time()B.strtotime()C.microtime()D.uniqid()
A.拼接字符串B.參數(shù)綁定預(yù)處理C.轉(zhuǎn)義特殊字符D.保存數(shù)據(jù)
A.$_GETB.$_POSTC.$_SESSIOND.$_FILE