抱歉，如果我要问的是一个愚蠢的问题，但我已经通读了，甚至适用于我的问题，但它仍然不工作的一些解决办法。我从这里得到了解决办法：1。注册成功后没有得到响应2。php注册表表单未更新数据库3。注册期间未保存插入的数据
我有一个系统，用户可以注册自己作为求职面试的候选人。但现在，系统不保存他们的注册。我查了一遍，但什么也没找到。也许有人能指出我哪里做错了，使我的系统不想保留数据。
my register-candidates.php

<section class="content-header">
      <div class="container">
        <div class="row latest-job margin-top-50 margin-bottom-20 bg-white">
          <h1 class="text-center margin-bottom-20">CREATE YOUR PROFILE</h1>
          <form method="post" id="registerCandidates" action="adduser.php" enctype="multipart/form-data">
            <div class="col-md-6 latest-job ">
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="fname" name="fname" placeholder="First Name *" required>
              </div>
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="lname" name="lname" placeholder="Last Name *" required>
              </div>
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="email" name="email" placeholder="Email *" required>
              </div>
              <div class="form-group">
                <textarea class="form-control input-lg" rows="4" id="aboutme" name="aboutme" placeholder="Brief intro about yourself *" required></textarea>
              </div>
              <div class="form-group">
                <label>Date Of Birth</label>
                <input class="form-control input-lg" type="date" id="dob" min="1960-01-01" max="1999-01-31" name="dob" placeholder="Date Of Birth">
              </div>
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="age" name="age" placeholder="Age" readonly>
              </div>
              <div class="form-group">
                <label>Passing Year</label>
                <input class="form-control input-lg" type="date" id="passingyear" name="passingyear" placeholder="Passing Year">
              </div>       
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="qualification" name="qualification" placeholder="Highest Qualification">
              </div>
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="stream" name="stream" placeholder="Stream">
              </div>                    
              <div class="form-group checkbox">
                <label><input type="checkbox"> I accept terms & conditions</label>
              </div>
              <div class="form-group">
                <button class="btn btn-flat btn-success">Register</button>
              </div>
              <?php 
              //If User already registered with this email then show error message.
              if(isset($_SESSION['registerError'])) {
                ?>
                <div class="form-group">
                  <label style="color: red;">Email Already Exists! Choose A Different Email!</label>
                </div>
              <?php
               unset($_SESSION['registerError']); }
              ?> 

              <?php if(isset($_SESSION['uploadError'])) { ?>
              <div class="form-group">
                  <label style="color: red;"><?php echo $_SESSION['uploadError']; ?></label>
              </div>
              <?php unset($_SESSION['uploadError']); } ?>     

            </div>            
            <div class="col-md-6 latest-job ">
              <div class="form-group">
                <input class="form-control input-lg" type="password" id="password" name="password" placeholder="Password *" required>
              </div>
              <div class="form-group">
                <input class="form-control input-lg" type="password" id="cpassword" name="cpassword" placeholder="Confirm Password *" required>
              </div>
              <div id="passwordError" class="btn btn-flat btn-danger hide-me" >
                    Password Mismatch!! 
                  </div>
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="contactno" name="contactno" minlength="10" maxlength="10" onkeypress="return validatePhone(event);" placeholder="Phone Number">
              </div>
              <div class="form-group">
                <textarea class="form-control input-lg" rows="4" id="address" name="address" placeholder="Address"></textarea>
              </div>
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="city" name="city" placeholder="City">
              </div>
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="state" name="state" placeholder="State">
              </div>
              <div class="form-group">
                <textarea class="form-control input-lg" rows="4" id="skills" name="skills" placeholder="Enter Skills"></textarea>
              </div>              
              <div class="form-group">
                <input class="form-control input-lg" type="text" id="designation" name="designation" placeholder="Designation">
              </div>

              <div class="form-group">
                <label style="color: red;">File Format PDF Only!</label>
                <input type="file" name="resume" class="btn btn-flat btn-danger" required>
              </div>
            </div>
          </form>

        </div>
      </div>
    </section>

添加用户.php

<?php

//To Handle Session Variables on This Page
session_start();

//Including Database Connection From db.php file to avoid rewriting in all files
require_once("db.php");

//If user clicked register button
if(isset($_POST)) {

	//Escape Special Characters In String First
	$firstname = mysqli_real_escape_string($conn, $_POST['fname']);
	$lastname = mysqli_real_escape_string($conn, $_POST['lname']);
	$address = mysqli_real_escape_string($conn, $_POST['address']);
	$city = mysqli_real_escape_string($conn, $_POST ['city']);
	$state = mysqli_real_escape_string($conn, $_POST ['state']);
	$contactno = mysqli_real_escape_string($conn, $_POST ['contactno']);
	$qualification = mysqli_real_escape_string($conn, $_POST ['qualification']);
	$stream = mysqli_real_escape_string ($conn, $_POST['stream']);
	$passingyear = mysqli_real_escape_string($conn, $_POST['passingyear']);
	$dob = mysqli_real_escape_string($conn, $_POST['dob']);
	$age = mysqli_real_escape_string($conn, $_POST['age']);
	$designation = mysqli_real_escape_string($conn, $_POST['designation']);
	$aboutme = mysqli_real_escape_string($conn, $_POST['aboutme']);
	$skills = mysqli_real_escape_string($conn, $_POST['skills']);
	$email = mysqli_real_escape_string($conn, $_POST['email']);
	$password = mysqli_real_escape_string($conn, $_POST['password']);

	//Encrypt Password
	$password = base64_encode(strrev(md5($password)));

	//sql query to check if email already exists or not
	$sql = "SELECT email FROM users WHERE email='$email'";
	$result = $conn->query($sql);

	//if email not found then we can insert new data
	if($result->num_rows == 0) {

			//This variable is used to catch errors doing upload process. False means there is some error and we need to notify that user.
		$uploadOk = true;

		//Folder where you want to save your image. THIS FOLDER MUST BE CREATED BEFORE TRYING
		$folder_dir = "uploads/resume/";

		//Getting Basename of file. So if your file location is Documents/New Folder/myResume.pdf then base name will return myResume.pdf
		$base = basename($_FILES['resume']['name']); 

		//This will get us extension of your file. So myimage.pdf will return pdf. If it was image.doc then this will return doc.
		$imageFileType = pathinfo($base, PATHINFO_EXTENSION); 

		//Setting a random non repeatable file name. Uniqid will create a unique name based on current timestamp. We are using this because no two files can be of same name as it will overwrite.
		$file = uniqid() . "." . $resumeFileType; 

		//This is where your files will be saved so in this case it will be uploads/image/newfilename
		$filename = $folder_dir .$file;  

		//We check if file is saved to our temp location or not.
		if(file_exists($_FILES['resume']['tmp_name'])) { 

			//Next we need to check if file type is of our allowed extention or not. I have only allowed pdf. You can allow doc, jpg etc. 
			if($resumeFileType == "pdf")  {

				//Next we need to check file size with our limit size. I have set the limit size to 5MB. Note if you set higher than 2MB then you must change your php.ini configuration and change upload_max_filesize and restart your server
				if($_FILES['resume']['size'] < 500000) { // File size is less than 5MB

					//If all above condition are met then copy file from server temp location to uploads folder.
					move_uploaded_file($_FILES["resume"]["tmp_name"], $filename);

				} else {
					//Size Error
					$_SESSION['uploadError'] = "Wrong Size. Max Size Allowed : 5MB";
					$uploadOk = false;
				}
			} else {
				//Format Error
				$_SESSION['uploadError'] = "Wrong Size. Max Size Allowed : 5MB ";
				$uploadOk = false;
			}
		} else {
				//File not copied to temp location error.
				$_SESSION['uploadError'] = "Something Went Wrong. File Not Uploaded. Try Again.";
				$uploadOk = false;
			}

		//If there is any error then redirect back.
		if($uploadOk == false) {
			header("Location: register-candidates.php");
			exit();
		}

		//sql new registration insert query
				$sql = "INSERT INTO users(firstname, lastname, email, password, address, city, state, contactno, qualification, stream, passingyear, dob, age, designation, resume, hash, aboutme, skills) VALUES ('$firstname', '$lastname', '$email', '$password', '$address', '$city', '$state', '$contactno', '$qualification', '$stream', '$passingyear', '$dob', '$age', '$designation', '$file', '$hash', '$aboutme', '$skills')";

		if($conn->query($sql)===TRUE) {

			//If data inserted successfully then Set some session variables for easy reference and redirect to company login
			$_SESSION['registerCompleted'] = true;
			header("Location: login-candidates.php");
			exit();

		} else {
			//If data failed to insert then show that error. Note: This condition should not come unless we as a developer make mistake or someone tries to hack their way in and mess up :D
			echo "Error " . $sql . "<br>" . $conn->error;
		}
	} else {
		//if email found in database then show email already exists error.
		$_SESSION['registerError'] = true;
		header("Location: register-candidates.php");
		exit();
	}

	//Close database connection. Not compulsory but good practice.
	$conn->close();

} else {
	//redirect them back to register page if they didn't click register button
	header("Location: register-candidates.php");
	exit();
}

谢谢你的帮助和时间。