PHP读取数据

（1）相关知识点

①查询：select column_name(s) from table_name

②mysqli_query() 函数执行一条 MySQL 查询

$result = mysqli_query($connect,"select* from user");

③结果集里行数，该结果集从mysql_query()的调用中得到

mysqli_num_rows($result);

④mysql_fetch_array() 函数以数组的形式从记录集返回第一行

⑤注意mysql_fetch_array()函数要直接放在while里，否则会无限循环

        //查询结果
        // mysqli_query() 函数执行一条 MySQL 查询
    	$result = mysqli_query($connect,"select* from user"); 
    	//结果集里行数，该结果集从 mysql_query() 的调用中得到
    	//mysqli_num_rows($result);
    	echo "<table border=1 cellspacing=0>";
        while($row = mysqli_fetch_array($result)){
            echo "<tr>";
            echo "<td>".$row['name']."</td>";
            echo "<td>".$row['password']."</td>";
            echo "<tr/>";
        }
        echo "</table>";

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