我不断收到错误消息mysql_num_rows()，你能帮我找出我的代码出了什么问题吗？
这是我的代码：
<?php
//check if the user press submit
if (isset($_POST['submit'] )) {
$customer = preg_replace('#[^A-Za-z0-9]#i', '', $_POST["username"]); // filter everything but numbers and letters
$password = preg_replace('#[^A-Za-z0-9]#i', '', $_POST["password"]); // filter everything but numbers and letters
$sql = mysql_query("SELECT id FROM members WHERE username='$customer' AND password='$password' LIMIT 1"); // query the person
// ------- MAKE SURE PERSON EXISTS IN DATABASE ---------
$existCount = mysql_num_rows($sql); // count the row nums
if ($existCount == 1) { // evaluate the count
while($row = mysql_fetch_array($sql)){
$id = $row["id"];
}
$_SESSION["id"] = $id;
$_SESSION["customer"] = $customer;
$_SESSION["password"] = $password;
header("location: index.php");
exit();
} else {
echo 'That information is incorrect, try again <a href="customer_login.php">Click Here</a>';
exit();
}
}
?>
我试过了mysql_errno()正如你所建议的..它回显 1146
当我搜索该错误时，它说
1146: Table 'kossu.nonexistenttable' doesn't exist
但我不知道这意味着什么...请帮忙。
大概mysql_query()失败的。在这种情况下它返回false. Use mysql_error() http://php.net/mysql-error找出发生了什么。
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