我们如何编写PHP脚本来通过MySQL查询计算受影响的行？
PHP使用mysql_affected_rows()函数来找出查询改变了多少行。为了说明这一点，我们有以下示例-
示例
<html><head>
<title>Rows affected by query</title>
</head>
<body>
<?php
$dbhost = 'localhost:3036';
$dbuser = 'root';
$dbpass = 'rootpassword';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn ) {
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully<br />';
mysql_select_db( 'TUTORIALS' );
$result_id = mysql_query ($query, $conn_id);
# report 0 rows if the query failed
$count = ($result_id ? mysql_affected_rows ($conn_id) : 0);
print ("$count rows were affected\n");
?>
</body>
</html>
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