Question

我有一个Articles.php页面和一个Single.php页面。 Articles.php运行foreach循环列出所有文章。每篇文章的href锚点是：

<a href="single.php?id=<?php echo $article['id'];

点击文章链接时，网址变为：

example.com/single.php?id=*ID*

我无法在单个页面上抓取该文章ID以显示特定于该ID的MySQL行。建议如下：

$id = filter_var($_GET['id'] ?? false, FILTER_VALIDATE_INT);
if($id !== false){
    //show the article, i.e. select * from .... where id = id ...
    echo "WORKING";
}else{
    //show the error like 404
    echo "ERROR";
}

应该是：

$id = $_GET($article['id'])

我无法完成这项工作。

Answer 1

使用..

将值发送到其他页面

<a href="single.php?id=<?php echo $article['id'];?>">Link</a> //missing php close tag here

然后使用

获取它

$id = $_GET['id'];

Answer 2

ok lets try this.
on page 1 => article.php
# we assume
database query here

$query = mysqli_query(//query here);
// we then use a while loop

while($q = $query->fetch_array())
{

  echo '<a href="single.php?id='.$q['id'].'">'.$q['article_name'].'</a>'; 

}


ok on page single.php

# we now have example.com/single.php?id=1 eg.

// there are many ways to grab the id

# option 1

 // inside single.php

 // method 1

  $article_id = isset($_GET['id']) ? (int) $_GET['id'] : "";

// method 2

  $article_id2 = "";

  if(isset($_GET['id']))
  {
    $article_id2 = $_GET['id'];
  }


 // now you have the value from the GET method within your local variable scope 
 // so choose any of the method above
 // both works

  hope this helps?

Answer 3

正如Hek mat所说，你错过了Clossing标签：

<a href="single.php?id=<?php echo $article['id'];?>">Link</a>

但是你的代码也不正确$ _GET ['id']总是给string "1"而不是int 1，如果未设置id，则会导致错误。所以试试这个：

if(isset($_GET['id']) && intval($_GET['id']) > 0){
    $id = intval($_GET['id']); // now work with $id its an int now 
    //show the article, i.e. select * from .... where id = id ...
    echo "WORKING";
}else{
    //show the error like 404
    echo "ERROR";
}

来自articles.php的PHP GET id

3 个答案: