代码如下:$query = "SELECT * FROM users WHERE username ='$username';";if(mysql_num_rows($result)>0) //user exists
{INSERT INTO users ( username, password, sa
我目前正在将所有sql查询更新到pdo,在pdo中我将使用prepare语句来防止sql注入攻击。到目前为止一切顺利,我现在只能用pdo来计算行数了。is 1, it should be 1038 $query = "SELECT COUNT(*) AS numrows FROM News";$row = mysql_fetch