Question

就像我在之前的问题中提到的那样，我目前正在自己的论坛上工作，这是我过去几个月一直在努力的。我希望能够允许用户在帖子或回复中上传图片。

我知道HTML看起来像这样：

<input type="file" name="imgUpload" id="imgUpload">

但它是处理它然后实际显示图像的PHP。我已经看过W3Schools的教程https://www.w3schools.com/php/php_file_upload.asp，但我无法让它发挥作用。

以下是用户在我的网站上提交新帖子的示例：

<?php

session_start();
ob_start();

$host = "host"; // Host name
$username = "username"; // Mysql username
$password = "password"; // Mysql password
$db_name = "db"; // Database name
$tbl_name = "users"; // Table name
$tbl_name2 = "fquestions"; // Table name
$error_page ="../error-message"; //Error Page

// Connect to server and select databse.
$conn = mysqli_connect($host, $username, $password)or die("cannot connect"); 
mysqli_select_db($conn, $db_name)or die("cannot select DB");

$email = $_SESSION['email'];

$sql = "SELECT * FROM $tbl_name WHERE email='$email'";
$result = mysqli_query($conn, $sql);
$rows = mysqli_fetch_array($result);

//Checks if user is logged in and account is active (not banned)
if($_SESSION['logged_in'] == true && $rows['active'] == 1) {

    function post_captcha($user_response) {
        $fields_string = '';
        $fields = array(
            'secret' => 'secret_key',
            'response' => $user_response
        );
        foreach($fields as $key=>$value)
        $fields_string .= $key . '=' . $value . '&';
        $fields_string = rtrim($fields_string, '&');

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify');
        curl_setopt($ch, CURLOPT_POST, count($fields));
        curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);

        $result = curl_exec($ch);
        curl_close($ch);

        return json_decode($result, true);
    }

    // Call the function post_captcha
    $res = post_captcha($_POST['g-recaptcha-response']);

    if (!$res['success']) {
        // What happens when the CAPTCHA wasn't checked
        $_SESSION['message'] = 'CAPTCHA Not Checked!';
        header( "Location: $error_page" );
    } else {

        // get data that sent from form 
        $topic = $_POST['topic'];
        $username = $_SESSION['username'];
        $detail = $_POST['detail'];
        $email = $_SESSION['email'];

        $datetime = date("d/m/y h:i:s"); //create date time

        //Inserts information to database
        $sql2 = "INSERT INTO $tbl_name2(topic, detail, username, email, datetime)VALUES('$topic', '$detail', '$username', '$email', '$datetime')";

        if (empty($topic) || empty($username) || empty($email)) {
            $_SESSION['message'] = 'Missing information!';
            header( "Location: $error_page" );
        } else {
            $result2 = mysqli_query($conn, $sql2);
        }

    if($result) {
        $sql3 = "SELECT MAX(id) FROM $tbl_name2";
        $result3 = mysqli_query($conn, $sql3);
        $row = mysqli_fetch_row($result3);
        $id = $row[0];

        //Redirects to topic page
        header('Location: view-topic?id='.$id.'');
        } else {
            echo "ERROR";
        }
        mysqli_close($conn);
    }
} else {
    echo '<p>You must be signed in to add a new topic</p>';
}
ob_end_flush();
?>

CAPTCHA检查完成后，我希望能够检查用户是否提交了图像。如果有，请将其上传到注册时创建的目录，例如：上传/用户名/然后处理文本。如果没有，那么它只是正常处理他们输入的文本。

至于将它显示到页面我不太确定，因为你需要某种ID我想或者可能会得到图像名称来显示它。如果我能让它发挥作用，我将非常感激。

上传图像+文本然后在页面上显示

0 个答案: