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使这个submit.php为学生数据提交到数据库得到错误，当我们从MySQL数据库中的数据如何正确
这里是代码
<html>
<head>
<title>Submit Student DATA </title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div id="main">
<h1>Submit Student Data for Verify </h1>
<div id="login">
<h2>Student's Form</h2>
<hr/>
<form action="" method="post">
<label>Student Name :</label>
<input type="text" name="stu_name" id="name" required="required" placeholder="Please Enter Name"/><br /><br />
<label>Father Name :</label>
<input type="text" name="stu_fathername" id="name" required="required" placeholder="Please Father Name"/><br /><br />
<label>Phone Number :</label>
<input type="text" name="stu_phonenumber" id="name" required="required" placeholder="+92000000"/><br /><br />
<label>Address :</label>
<input type="text" name="stu_address" id="name" required="required" placeholder="Pakistan, Punjab 0000"/><br /><br />
<label>Course Name :</label>
<input type="text" name="stu_course" id="name" required="required" placeholder="Nebosh saftey"/><br /><br />
<label>Certificate Number :</label>
<input type="text" name="stu_certificatenumber" id="name" required="required" placeholder="Enter Number"/><br /><br />
<label>Registration Number :</label>
<input type="text" name="stu_registrationnumber" id="name" required="required" placeholder="Enter Number"/><br /><br />
<label>Student Email :</label>
<input type="email" name="stu_email" id="email" required="required" placeholder="[email protected]"/><br/><br />
<label>Student City :</label>
<input type="text" name="stu_city" id="city" required="required" placeholder="Lahore"/><br/><br />
<input type="submit" value=" Submit " name="submit"/><br />
</form>
</div>
</div>
<?php
if (isset($_POST["submit"])) {
$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "college";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "INSERT INTO students (student_name, father_name, phone_number, student_address, student_course, student_certificatenumber, student_reg, student_email, student_city)
VALUES ('" . $_POST["stu_name"] . "','" . $_POST["stu_fathername"] . "','" . $_POST["stu_phonenumber"] . "','" . $_POST["stu_address"] . "','" . $_POST["stu_course"] . "','" . $_POST["stu_certificatenumber"] . "','" . $_POST["stu_registrationnumber"] . "','" . $_POST["stu_email"] . "','" . $_POST["stu_city"] . "')";
if ($conn->query($sql) === TRUE) {
echo "<script type= 'text/javascript'>alert('New Record Inserted Successfully');</script>";
} else {
echo "<script type= 'text/javascript'>alert('Error: " . $sql . "<br>" . $conn->error . "');</script>";
}
$conn->close();
}
?>
</body>
</html>
我想要的搜索框，在1个文本box call student注册号码。当我把学生注册人数和点击搜索，然后我从MySQL获得
这里的学生数据搜索代码也许正确或wroing我不无
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<?php
$hostname_php_result_conn = "localhost";
$database_php_result_conn = "college";
$username_php_result_conn = "root";
$password_php_result_conn = "root";
$php_result_conn = mysql_connect($hostname_php_result_conn, $username_php_result_conn, $password_php_result_conn);
mysql_select_db($database_php_result_conn,$php_result_conn);
if(isset($_POST['submit'])) {
$student_reg = $_POST['stu_registrationnumber'];
$sql1 = mysql_query("SELECT students FROM student_reg WHERE = $stu_registrationnumber");
$row1 = mysql_num_rows($sql1);
if($row1 == 0) {
echo 'Error, ID does not exist';
} else {
header('Location: show_result.php?student_reg='.$stu_registrationnumber);
}
}
?>
<html>
<head>
<title>Search</title>
</head>
<body>
<form action="search.php" method="post">
<input name="student_reg" type="text" id="stu_registrationnumber" />
<input type="submit" name="submit" value="search" />
</form>
</body>
</html>
，这里是
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<?php
$hostname_php_result_conn = "localhost";
$database_php_result_conn = "college";
$username_php_result_conn = "root";
$password_php_result_conn = "root";
$php_result_conn = mysql_connect($hostname_php_result_conn, $username_php_result_conn, $password_php_result_conn);
mysql_select_db($database_php_result_conn,$php_result_conn);
$stu_reg = $_GET['stu_registrationnumber'];
$sql1 = mysql_query("SELECT * FROM students WHERE stu_registrationnumber = $stu_registrationnumber");
$row1 = mysql_fetch_array($sql1);
$student_name = $row1['student_name'];
$phone_number = $row1['phone_number'];
$student_address = $row1['student_address'];
$student_course = $row1['student_course'];
$student_certificatenumber = $row1['student_certificatenumber'];
$stu_registrationnumber = $row1['stu_registrationnumber'];
$student_email = $row1['student_email'];
$student_city = $row1['student_city'];
?>
<html>
<head>
<title>Show Results</title>
</head>
<body>
<?php
echo 'Student Name = '.$student_name.'<br />
Father Name = '.$father_name;
Phone Number = '.$phone_number;
Address = '.$student_address;
Course = '.$student_course;
Certificate Number = '.$student_certificatenumber;
Registration Number = '.$stu_registrationnumber;
E-Mail = '.$student_email;
City = '.$student_city;
?>
</body>
</html>
，但我得到的错误，ID不存在，但在数据库中，我们已经登记号码，但得到的错误还是错误
'$ student_reg = $ _POST [ 'student_reg'];'VS'' - $ _POST ['stu_registrationnumber']' –
'$ _POST ['student_reg'];' - >'$ _POST ['stu_registrationnumber'];'**但是** don不使用mysql_ *，清理用户输入，使用预处理语句。 – Jeff
另外，为什么你在一个中使用mysqli_ API，然后在另一个中使用mysql_？ –