Question

我无法在php中使用$_GET/$_REQUEST从网址获取ID。

我的链接

http://localhost/Social/single.php?post_id=1

我的代码

function single_post() {

    if (isset($_REQUEST['post_id'])) {

        global $con;

        $get_id = $_REQUEST['post_id'];
        $get_posts = "SELECT * FROM posts (post_id) VALUES ('$get_id')";
        $run_posts = mysqli_query($con,$get_posts);

        if($run_posts) {
            echo "SUCCESS.";
        } else {
            echo "FAILED.";
        }
    }

}//singlepost ends here

它返回＆＃34; FAILED＆＃34;。我尝试过在互联网上找到的所有其他方法。

Answer 1

实际上你得到的是id 但它给你失败，因为你的SQL查询不正确

    $get_posts = "SELECT * FROM posts (post_id) VALUES ('$get_id')";

将其更改为

    $get_posts = "SELECT * FROM posts where post_id=$get_id";

如果您尝试获取该post_id的帖子内容

Answer 2

SELECT查询应该写成

"SELECT * FROM posts WHERE post_id='$post_id'"

使用$ _GET / $ _REQUEST方法

2 个答案: