我认为代码是正确的，但是不会将提交的数据添加到数据库中。
我的服务器上装有PHP 7.3.4。
我的PHP代码，
我创建了注册表，但是没有向数据库添加任何内容。你能帮我吗？
（我已经建立了与数据库的连接，只是不想公开显示信息。）
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
session_start();
$dbhost = "localhost";
$dbusername = "root";
$dbpassword = "9F!25opp";
$dbname = 'Photoshare';
// Create connection
$con = new mysqli($dbhost, $dbusername, $dbpassword, $dbname);
if(mysqli_connect_errno())
{
echo "Failed to connect: " . mysqli_connect_errno();
}
//Declaring variables to prevent errors
$fname = ""; //First name
$lname = ""; //Last name
$em = ""; //email
$em2 = ""; //email 2
$password = ""; //password
$password2 = ""; //password 2
$date = ""; //Sign up date
$error_array = array(); //Holds error messages
if(isset($_POST['register_button'])){
//Registration form values
//First name
$fname = strip_tags($_POST['reg_fname']); //Remove html tags
$fname = str_replace(' ', '', $fname); //remove spaces
$fname = ucfirst(strtolower($fname)); //Uppercase first letter
$_SESSION['reg_fname'] = $fname; //Stores first name into session variable
//Last name
$lname = strip_tags($_POST['reg_lname']); //Remove html tags
$lname = str_replace(' ', '', $lname); //remove spaces
$lname = ucfirst(strtolower($lname)); //Uppercase first letter
$_SESSION['reg_lname'] = $lname; //Stores last name into session variable
//email
$em = strip_tags($_POST['reg_email']); //Remove html tags
$em = str_replace(' ', '', $em); //remove spaces
$_SESSION['reg_email'] = $em; //Stores email into session variable
//email 2
$em2 = strip_tags($_POST['reg_email2']); //Remove html tags
$em2 = str_replace(' ', '', $em2); //remove spaces
$_SESSION['reg_email2'] = $em2; //Stores email2 into session variable
//Password
$password = strip_tags($_POST['reg_password']); //Remove html tags
$password2 = strip_tags($_POST['reg_password2']); //Remove html tags
$date = date("Y-m-d"); //Current date
if($em == $em2) {
//Check if email is in valid format
if(filter_var($em, FILTER_VALIDATE_EMAIL)) {
$em = filter_var($em, FILTER_VALIDATE_EMAIL);
//Check if email already exists
$e_check = mysqli_query($con, "SELECT email FROM basic WHERE email='$em'");
//Count the number of rows returned
$num_rows = mysqli_num_rows($e_check);
if($num_rows > 0) {
array_push($error_array, "Email already in use<br>");
}
}
else {
array_push($error_array, "Invalid email format<br>");
}
}
else {
array_push($error_array, "Emails don't match<br>");
}
if(strlen($fname) > 25 || strlen($fname) < 2) {
array_push($error_array, "Your first name must be between 2 and 25 characters<br>");
}
if(strlen($lname) > 25 || strlen($lname) < 2) {
array_push($error_array, "Your last name must be between 2 and 30 characters<br>");
}
if($password != $password2) {
array_push($error_array, "Your passwords do not match<br>");
}
else {
if(preg_match('/[^A-Za-z0-9]/', $password)) {
array_push($error_array, "Your password can only contain english characters.<br>");
}
}
if(strlen($password > 30 || strlen($password) < 5)) {
array_push($error_array, "Your password must be betwen 5 and 30 characters<br>");
}
if(empty($error_array)) {
$password = md5($password); //Encrypt password before sending to database
//Generate username by concatenating first name and last name
$username = strtolower($fname . "_" . $lname);
$check_username_query = mysqli_query($con, "SELECT username FROM basic WHERE username='$username'");
$i = 0;
//if username exists add number to username
while(mysqli_num_rows($check_username_query) != 0) {
$i++; //Add 1 to i
$username = $username . "_" . $i;
$check_username_query = mysqli_query($con, "SELECT username FROM basic WHERE username='$username'");
}
//Profile picture assignment
$rand = rand(1, 2); //Random number between 1 and 2
if($rand == 1)
$profile_pic = "assets/images/profile_pics/defaults/head_deep_blue.png";
else if($rand == 2)
$profile_pic = "assets/images/profile_pics/defaults/head_emerald.png";
$query = mysqli_query($con, "INSERT INTO basic ('id', 'first_name', 'last_name', 'username', 'email', 'password', 'signup_date', 'profile_pic') VALUES ('', $fname, $lname, $username, $em, $password, $date, $profile_pic)");
array_push($error_array, "<span style='color: #14C800;'>You're all set! Goahead and login!</span><br>");
//Clear session variables
$_SESSION['reg_fname'] = "";
$_SESSION['reg_lname'] = "";
$_SESSION['reg_email'] = "";
$_SESSION['reg_email2'] = "";
}
}
?>
我的html代码：
<!DOCTYPE html>
<html lang="en">
<head>
<title>Photoshare Register</title>
</head>
<body>
<form action="index.php" method="POST">
<input type="text" name="reg_fname" placeholder="First Name" value="<?php
if(isset($_SESSION['reg_fname'])) {
echo $_SESSION['reg_fname'];
}
?>" required>
<br>
<?php if(in_array("Your first name must be between 2 and 25 characters<br>", $error_array)) echo "Your first name must be between 2 and 25 characters<br>"; ?>
<input type="text" name="reg_lname" placeholder="Last Name" value="<?php
if(isset($_SESSION['reg_lname'])) {
echo $_SESSION['reg_lname'];
}
?>" required>
<br>
<?php if(in_array("Your last name must be between 2 and 25 characters<br>", $error_array)) echo "Your last name must be between 2 and 25 characters<br>"; ?>
<input type="email" name="reg_email" placeholder="Email" value="<?php
if(isset($_SESSION['reg_email'])) {
echo $_SESSION['reg_email'];
}
?>" required>
<br>
<input type="email" name="reg_email2" placeholder="Confirm Email" value="<?php
if(isset($_SESSION['reg_email2'])) {
echo $_SESSION['reg_email2'];
}
?>" required>
<br>
<?php if(in_array("Email already in use<br>", $error_array)) echo "Email already in use<br>";
else if(in_array("Invalid email format<br>", $error_array)) echo "Invalid email format<br>";
else if(in_array("Emails don't match<br>", $error_array)) echo "Emails don't match<br>"; ?>
<input type="password" name="reg_password" placeholder="Password" required>
<br>
<input type="password" name="reg_password2" placeholder="Confirm Password" required>
<br>
<?php if(in_array("Your passwords do not match<br>", $error_array)) echo "Your passwords do not match<br>";
else if(in_array("Your password can only contain english characters or numbers<br>", $error_array)) echo "Your password can only contain english characters or numbers<br>";
else if(in_array("Your password must be betwen 5 and 30 characters<br>", $error_array)) echo "Your password must be betwen 5 and 30 characters<br>"; ?>
<input type="submit" name="register_button" value="Register">
<br>
<?php if(in_array("<span style='color: #14C800;'>You're all set! Goahead and login!</span><br>", $error_array)) echo "<span style='color: #14C800;'>You're all set! Go ahead and login!</span><br>"; ?>
</form>
</body>
</html>