PHP&;MySQL删除多行脚本问题
当用户单击“删除”按钮时,我试图同时从两个不同的表中删除两个表行,但由于某些原因,我无法删除表行。有人能帮我找出脚本的错误吗?谢谢 下面是MySQL表PHP&;MySQL删除多行脚本问题,php,mysql,xhtml,Php,Mysql,Xhtml,当用户单击“删除”按钮时,我试图同时从两个不同的表中删除两个表行,但由于某些原因,我无法删除表行。有人能帮我找出脚本的错误吗?谢谢 下面是MySQL表 CREATE TABLE cases ( id INT UNSIGNED NOT NULL AUTO_INCREMENT, file VARCHAR(255) NOT NULL, case VARCHAR(255) NOT NULL, name VARCHAR(255) NOT NULL, PRIMARY KEY (id) ); CREATE
CREATE TABLE cases (
id INT UNSIGNED NOT NULL AUTO_INCREMENT,
file VARCHAR(255) NOT NULL,
case VARCHAR(255) NOT NULL,
name VARCHAR(255) NOT NULL,
PRIMARY KEY (id)
);
CREATE TABLE users_cases (
id INT UNSIGNED NOT NULL AUTO_INCREMENT,
cases_id INT UNSIGNED NOT NULL,
user_id INT UNSIGNED NOT NULL,
PRIMARY KEY (id)
);
下面是PHP&MySQL脚本
if(isset($_POST['delete_case'])) {
$cases_ids = array();
$mysqli = mysqli_connect("localhost", "root", "", "sitename");
$dbc = mysqli_query($mysqli,"SELECT cases.*, users_cases.* FROM cases INNER JOIN users_cases ON users_cases.cases_id = cases.id WHERE users_cases.user_id='$user_id'");
if (!$dbc) {
print mysqli_error($mysqli);
} else {
while($row = mysqli_fetch_array($dbc)){
$cases_ids[] = $row["cases_id"];
}
}
foreach($_POST['delete_id'] as $di) {
if(in_array($di, $cases_ids)) {
$mysqli = mysqli_connect("localhost", "root", "", "sitename");
$dbc = mysqli_query($mysqli,"DELETE FROM users_cases WHERE cases_id = '$delete_id'");
$dbc2 = mysqli_query($mysqli,"DELETE FROM cases WHERE id = '$delete_id'");
}
}
}
这是XHTML
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id" value="' . $row['cases_id'] . '" />
</li>
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id" value="' . $row['cases_id'] . '" />
</li>
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id" value="' . $row['cases_id'] . '" />
</li>
请检查此部分
foreach($_POST['delete_id'] as $di) {
if(in_array($di, $cases_ids)) {
$mysqli = mysqli_connect("localhost", "root", "", "sitename");
$dbc = mysqli_query($mysqli,"DELETE FROM users_cases WHERE cases_id = '$di'");
$dbc2 = mysqli_query($mysqli,"DELETE FROM cases WHERE id = '$di'");
}
}
请检查这部分
foreach($_POST['delete_id'] as $di) {
if(in_array($di, $cases_ids)) {
$mysqli = mysqli_connect("localhost", "root", "", "sitename");
$dbc = mysqli_query($mysqli,"DELETE FROM users_cases WHERE cases_id = '$di'");
$dbc2 = mysqli_query($mysqli,"DELETE FROM cases WHERE id = '$di'");
}
}
也许我搞错了,你把除delete\u id之外的所有其他表单元素都设置成数组。delete\u id应该是这样的数组吗
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id[]" value="' . $row['cases_id'] . '" />
</li>
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id[]" value="' . $row['cases_id'] . '" />
</li>
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id[]" value="' . $row['cases_id'] . '" />
</li>
也许我弄错了,您将除delete\u id之外的所有其他表单元素都设置为数组。delete\u id应该是这样的表单中的数组吗
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id[]" value="' . $row['cases_id'] . '" />
</li>
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id[]" value="' . $row['cases_id'] . '" />
</li>
<li>
<input type="text" name="file[]" size="25" />
<input type="text" name="case[]" size="25" />
<input type="text" name="name[]" size="25" />
<input type="hidden" name="delete_id[]" value="' . $row['cases_id'] . '" />
</li>
您真的不应该将POST字段直接放入SQL查询中。由于SQL注入攻击,这可能是一个安全问题。@Dav,谢谢你的建议,一旦我知道我的代码有什么问题,我会尽快修复我的代码。你真的不应该将POST字段直接放入SQL查询中。由于SQL注入攻击,这可能是一个安全问题。@Dav,谢谢你的建议,一旦我知道我的代码有什么问题,我会尽快修复我的代码。