我发现很难为我的搜索表单编写SQL准备好的语句,我可以得到修复方面的帮助吗?没有SQL准备好的bind语句,一切工作都很好,但是请确保它不是那么安全。
这是我的代码:
<?php
// Define Database connection parameters
$dbserver = "localhost";
$username = "root";
$password = "";
$dbname = "student";
// Lets Connect to theDatabase Table, But if there is an Error lets tell before its too late to figured
$conn = mysqli_connect ( $dbserver, $username, $password, $dbname ) or die ( ' I can not connect to the database ' );
// Its time to Capture the varibles and user inpute from the form , also we need to sanitize the input to avoid SQL Injection
$study_group = mysqli_real_escape_string ( $conn, $_POST['matric_number']);
/* Lets try to use bind Statement to reduce further hacking
I am also avoiding using "LIKE" Clause because IVariable direct Exact results so will be using the Direct Varible
*/
$sql = $conn->prepare (" SELECT * FROM study_circle WHERE matric = ? ") ;
$sql->bind_param('s', $study_group);
$sql ->execute();
$results = mysqli_query ($conn, $sql);
$mysqlResults = mysqli_num_rows ($results);
if ( $mysqlResults > 0 )
{
while ( $row = mysqli_fetch_assoc ( $results ))
{
// Display results in table form
echo " <div>
<h4> ".$row['full_name']."</h4>
</div>";
}
} else {
echo " Please Ensure your Matric Number is correct, We can not find anything relting to your data";
}
答案 0 :(得分:1)
如果使用准备好的语句,则不应使用mysqli_real_escape_string
尝试注释mysqli_real_escape_string行,并直接在bind_param中使用$ _POST ['matric_number']
// $study_group = mysqli_real_escape_string ( $conn, $_POST['matric_number']);
/* Lets try to use bind Statement to reduce further hacking
我也避免使用“ LIKE”子句,因为IVariable直接精确结果将使用直接变量 * /
$sql = $conn->prepare (" SELECT * FROM study_circle WHERE matric = ? ") ;
$sql->bind_param('s', $_POST['matric_number']);
$sql ->execute();
绑定参数和准备好的语句可防止SQL注入,因此您不需要mysqli_real_escape_string操作