<?php
if (intval($_GET['page']) == 0) {
redirect_to("staff.php");
}
$id = mysqli_prep($_GET['page']);
$query3 = "DELETE FROM page WHERE id = {$id}, LIMIT 1";
$result = mysqli_query($connection, $query3);
if (mysqli_affected_rows($connection) == 1) {
redirect_to("staff.php");
} else {
// Deletion Failed
echo $id ."<br />" . $query3 . "<br />" . $result . "<p>Subject
deletion failed.</p>";
echo "<p>" . mysqli_error() . "</p>";
echo "<a href=\"staff.php\">Return to Main Page</a>";
}
// Keep on working Edit:2#
mysqli_query($connection, "DELETE FROM pages WHERE id = 11 ");
//- Works
Edit 3#
$id = $_GET['page'];
echo "<p>" . $id ."</p>";
$query3 ="DELETE FROM pages WHERE id = {$id} ";
mysqli_query($connection,$query3 );
// Still Works -- YaY for working backwards
// Edit #4 By "now it might be obvious what my error was "pages" not "page"
// Thanks everyone - And thank you for telling me about the error page
// My defense - newbie- Anyway Lesson from this - working backwards
// Takes a while, Error checking Fast!!!!!!
?>
启动并选择$ connection。 $ id已成功选中,$ page = $ id,但仍无效。 $ query 3似乎很好,但删除失败了。我不知道错误是什么。在此先感谢您的帮助。 -Josh编辑检查错误检查
答案 0 :(得分:1)
ID后面有逗号:
$query3 = "DELETE FROM page WHERE id = {$id}, LIMIT 1";
^ remove this
答案 1 :(得分:0)
if ($page == get_page_by_id($id)) {
==进行比较
===比较值和演员
$val = true;
if ($val === true) {
echo "\$val is bool(true)";
}
if ($val == "true") {
echo "\$val matches value";
}
if ($val === "true") {
// this will never happen
} else {
echo "\$val doesnt === \"true\"";
}
答案 2 :(得分:0)
我不知道错误是什么。
那是因为你没有检查。每次准备或执行查询时,都需要检查错误。如果遇到错误,mysqli中的大多数函数都会返回FALSE
。
$result = mysqli_query($connection, $query3);
if ($result === false) {
trigger_error(mysqli_error($connection), E_USER_ERROR);
header("Location: /error.php");
exit;
}
未能检查错误情况是数据库程序员犯下的最常见错误之一。
答案 3 :(得分:-1)
尝试在.htaccess中使用php_flag display_errors on
这将允许您查看和识别PHP错误。