Question

我想在PHP和MySQL中创建一个CMS，但是我收到错误Undefined：index keywords，我做错了什么？

<?php
include("includes/connect.php");

if (isset($_POST['submit'])){

$post_title = $_POST['title'];
$post_date = date('d-m-y');
$post_author = $_POST['author'];
$post_keywords = $_POST['keywords'];
$post_content = $_POST['content'];
$post_image = $_FILES['image'] ['name'];
$image_tmp = $_FILES['image'] ['tmp_name'];


if($post_title=='' or  $post_keywords=='' or $post_content=='' or $post_author==''){

    echo "<script>alert('any of the field is empty')</script>";

    exit();


}

    else{

        move_uploaded_file($image_tmp, "images/$post_image");

        $insert_query = "insert into posts (post_title,post_date,post_author,post_image,post_keywords,post_content) values ('$post_title','$post_date','$post_author','$post_image', '$post_keywords', $post_content)";

        if (mysql_query($insert_query)) {

        echo "<center><h1>Post Published succesfully!</h1></center>";

    }

}

}

Answer 1

在访问$_POST数组之前，您需要验证keywords数组实际上是否包含键$post_title = isset($_POST['title']) ? $_POST['title'] : ''; $post_date = date('d-m-y'); $post_author = isset($_POST['author']) ? $_POST['author'] : ''; $post_keywords = isset($_POST['keywords']) ? $_POST['keywords'] : ''; $post_content = isset($_POST['content']) ? $_POST['content'] : ''; $post_image = isset($_FILES['image']['name']) ? $_FILES['image']['name'] : ''; $image_tmp = isset($_FILES['image']['tmp_name']) ? $_FILES['image']['tmp_name'] : '';的元素：

if (isset($_POST['keywords'])) {
    $post_keywords = $_POST['keywords'];
} else {
    $post_keywords = '';
}

另一种写这种方式的方式是：

name="keywords"

如果您希望每次验证输入字段的名称与post数组中的键完全匹配且没有拼写错误时发布关键字。

您还应确保您的表单元素包含名称属性。

即：{{1}}

Answer 2

您可以设置一个条件来验证是否有任何POST数据。

if ($_POST) {
   //do your staff here
} else {
   //redirect to the form
}

Answer 3

我这样做的方式很简单：

  HttpContext.Response.ContentType = "application/pdf";
           var result = new FileContentResult(System.IO.File.ReadAllBytes("THE PATH/test.pdf"), "application/pdf")
           {
                FileDownloadName = "test.pdf"
           };

           return result;

Answer 4

我这样做的方式很简单：

//Images data save in Variables
echo $post_image = isset($_FILES['post_image']['name']) ? $_FILES['post_image']['name'] : '';
echo $image_tmp = isset($_FILES['post_image']['tmp_name']) ? $_FILES['post_image']['tmp_name'] : '';
if($post_title=='' OR $post_author==''){
    echo "<script>alert('Please fill all the data')</script>";
    exit();
}

未定义：索引关键字（CMS）

4 个答案: