所有表格均未显示 Rss 提要

Question

我将这个 rss.php 文件用于 rss 提要，但问题是它只显示来自 2 table 的提要，并非所有 4.Where 都是问题？提要即将到来仅来自名人和经济与政治 table。

<?php
function connect() {
    return new PDO('mysql:host=localhost;dbname=wg','root','', array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
}


$pdo = connect();
$myarray = array('scienceandtechnology','economicsandpolitics','famouspeople','yetosbkistoryhe');
$key = array_rand($myarray);
$table= $myarray[$key];

$sql = "SELECT * FROM ".$table."";
$query = $pdo->prepare($sql);
$query->execute();
$rs_post = $query->fetchAll();

// The XML structure
$data = '<?xml version="1.0" encoding="UTF-8" ?>';
$data .= '<rss version="2.0">';
$data .= '<channel>';
$data .= '<title>google</title>';
$data .= '<link>http://www.google.com</link>';
$data .= '<description>io</description>';
foreach ($rs_post as $row) {
    $data .= '<item>';
    $data .= '<title>'.$row['title'].'</title>';
    $data .= '<link>'.$row['content'].'</link>';
    $data .= '<description>'.$row['summary'].'</description>';
    $data .= '</item>';
}
$data .= '</channel>';
$data .= '</rss> ';

header('Content-Type: application/xml');
echo $data;
?>

Answer 1

如果我理解正确，可能会对你有所帮助，

$pdo = connect();
$myarray =  array('scienceandtechnology','economicsandpolitics','famouspeople','yetosbkistoryhe');

foreach ($myarray as $table) {
   $sql = "SELECT * FROM ".$table."";
   $query = $pdo->prepare($sql);
   $query->execute();
   $rs_post = $query->fetchAll();   
   foreach ($rs_post as $post) {
        // echo something
   }             
}

Answer 2

你在这里从 table 名称静态使用它我有几乎相同类型的问题但在我的情况下 table 名称也是动态的所以根据你的相关性使用它

$sql = mysql_query("select name from sections order by rand()");
$datadisplay = array();

while ($row= mysql_fetch_assoc($sql)){
    $section=$row['name'];
    $sqldata = mysql_query("select title,summary from ".$section." order by ID limit 2");
    while ($rowdata= mysql_fetch_assoc($sqldata)){
        $datadisplay[] = $rowdata;
    }
}

所以我在这里做的是从部分中获取 table 名称，然后使用这些 table 名称从 table 中获取数据，然后将该数据存储到另一个数组中然后可以用来获取 rss 数据

所有表格均未显示 Rss 提要

Rss feed not showing from all the tables

javascript

php

rss