PHP按钮返回404错误
书上的内容，然后已经建立了数据库和login.php文件。
<?php<br> require_once 'login.php';<br> $db_server = mysql_connect($db_hostname,$db_username,$db_password);<br><br> if(!$db_server)die("Unable to connect to MySQL:".mysql_error());<br><br> mysql_select_db($db_database)<br> or die("Unable to select to MySQL:".mysql_error());<br> <br> if(isset($_post['delete']) && isset($_POST['isbn']))<br> {<br> $isbn = get_post('isbn');<br> $query = "DELETE FROM classics WHERE isbn='$isbn'";<br> <br> if(!mysql_query($query, $db_server))<br> echo "DELETE failed: $query<br />".mysql_error()."<br /><br />";<br> }<br> <br> if(isset($_post['author']) &&<br> isset($_post['title']) &&<br> isset($_post['category']) &&<br> isset($_post['year']) &&<br> isset($_post['isbn']))<br> {<br> $author = get_post('author');<br> $title = get_post('title');<br> $category = get_post('category');<br> $year = get_post('year');<br> $isbn = get_post('isbn');<br> <br> $query = "INSERT INTO classics VALUES".<br> "('$author','$title','$category','$year','$isbn')"; <br> <br> if(!mysql_query($query, $db_server))<br> {<br> echo "INSERT failed: $query<br />".mysql_error()."<br /><br />";<br> }<br> }<br> <br> echo <<<_END<br><br> <form action="sqltext.php" method="post"><br> <br> <pre class="brush:php;toolbar:false;"><br> <br> Author <input type="text" name="author" /><br> Title <input type="text" name="title" /><br> Category <input type="text" name="category" /><br> year <input type="text" name="year" /><br> ISBN <input type="text" name="isbn" /><br> <br> <input type="submit" value="ADD RECORD" /><br> <br> _END;
$query = "SELECT * FROM classics";
$result = mysql_query($query);
if(!$result) die("Datebase access failed: ".mysql_error);
$rows = mysql_num_rows($result);
for($j = 0; $j {
$row = mysql_fetch_row($result);
echo
<br> Author $row[0]<br> Title $row[1]<br> category $row[2]<br> year $row[3]<br> ISBN $row[4]<br>
_END;
}
mysql_close($db_server);
function get_post($var)
{
return mysql_real_escape_string($_POST[$var]);
}
?>
该网页显示正常，但是一按add recode按钮就会出现object not found错误，并且底下有error 404。
求大神帮忙呢。。。
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加断点一步一步调试。
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