吴裕雄--天生自然 PHP开发学习：MySQL子句
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<?php $con=mysqli_connect("localhost","username","password","database"); // 检测连接 if (mysqli_connect_errno()) { echo "连接失败: " . mysqli_connect_error(); } $result = mysqli_query($con,"SELECT * FROM Persons ORDER BY age"); while($row = mysqli_fetch_array($result)) { echo $row[‘FirstName‘]; echo " " . $row[‘LastName‘]; echo " " . $row[‘Age‘]; echo "<br>"; } mysqli_close($con); ?>
<?php $con=mysqli_connect("localhost","username","password","database"); // 检测连接 if (mysqli_connect_errno()) { echo "连接失败: " . mysqli_connect_error(); } $result = mysqli_query($con,"SELECT * FROM Persons WHERE FirstName=‘Peter‘"); while($row = mysqli_fetch_array($result)) { echo $row[‘FirstName‘] . " " . $row[‘LastName‘]; echo "<br>"; } ?>
<?php $con=mysqli_connect("localhost","username","password","database"); // 检测连接 if (mysqli_connect_errno()) { echo "连接失败: " . mysqli_connect_error(); } mysqli_query($con,"UPDATE Persons SET Age=36 WHERE FirstName=‘Peter‘ AND LastName=‘Griffin‘"); mysqli_close($con); ?>
<?php $con=mysqli_connect("localhost","username","password","database"); // 检测连接 if (mysqli_connect_errno()) { echo "连接失败: " . mysqli_connect_error(); } mysqli_query($con,"DELETE FROM Persons WHERE LastName=‘Griffin‘"); mysqli_close($con); ?>
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