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如何再sql语句中加入变量?
如何在SQL中加入变量 "SELECT * FROM user WHERE ll_user=$id"; 这里如何加入ID变量 这么写总不对 //ll_user 是字符串 $id 内容是 dove 如果是 "SELECT * FROM user WHERE ll_user='dove' " 就没问题 用变量要如何写?
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$id 要加单引号的'$id'
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