How do you fetch all rows with pdo? - php

Question

I am making a blog and I want to fetch all rows using a pdo statement but no matter what I do only one row comes back even though there are two rows in my database.
Here's the code sample where I connect:
<?php
try{
$link=new PDO('mysql:host=127.0.0.1;dbname=blog1','root','');
$link->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch(PDOException $e){
echo $e->getMessage();
die();
}
?>
Then I try to fetch all rows
<?php
require 'Escape.php';
$posts_query=$link->query('SELECT * FROM posts');
$posts_query->execute();
/* variable that holds a with the database link and query in it then fetches
all the data related to the query into and assoc array */
$result=$posts_query->fetchAll();
//counting all rows
$count=$posts_query->rowCount();
if($count>0){
foreach($result as $r){
$id= $r['id'];
$title= $r['title'] ;
$content=$r['content'];
$date= $r['date'];
//admin buttons
$admin="";
//keeping title safe
$Title=htmlentities($title);
//keeping output safe
$output=htmlentities($content);
// styling the posts to be echoed with secure variables
$posts= "<div><h2><a href='view_post.php?pid=$id' class='names'>$Title</a>
</h2><h3>$date</h3><p>$output</p>$admin</div>";
escape($posts);
}
echo"<div id=posts>$posts</div>";
} else{
echo 'There are no posts to display.';
}
?>

Answer 1

Your $posts's value is reset to the latest row when you loop, either you append the value of each post using concat . operator:
if($count>0){
$posts = "";
foreach($result as $r){
// Define your variable
$posts .= "<div><h2><a href='view_post.php?pid=$id' class='names'>$title</a></h2><h3>$date</h3><p>$output</p>$admin</div>";
escape($posts);
}
echo"<div id=posts>$posts</div>";
} else { ... }
Or printing each post while looping:
if($count>0){
$posts = "";
echo "<div id='posts'>";
foreach($result as $r){
// Define your variable
$posts = "<div><h2><a href='view_post.php?pid=$id' class='names'>$title</a></h2><h3>$date</h3><p>$output</p>$admin</div>";
escape($posts);
echo $posts;
}
echo"</div>";
} else { ... }

Answer 2

Looks like you are re-assigning posts on every iteration, try adding the values to an array and imploding them when you would like to echo them out.
require 'Escape.php';
$posts_query=$link->query('SELECT * FROM posts');
$posts_query->execute();
$result=$posts_query->fetchAll();
$count=$posts_query->rowCount();
if($count>0){
$posts=[];
foreach($result as $r){
$id= $r['id'];
$title= $r['title'] ;
$content=$r['content'];
$date= $r['date'];
$admin="";
$Title=htmlentities($title);
$output=htmlentities($content);
// Add the HTML to the $posts array, also taking advantage of NOWDOCS
$posts[]= <<< HTML
<div>
<h2>
<a href='view_post.php?pid={$id}' class='names'>{$Title}</a>
</h2>
<h3>{$date}</h3>
<p>{$output}</p>
{$admin}
</div>
HTML;
escape($posts);
}
echo"<div id='posts'>" . implode('', $posts) . "</div>";
} else {
echo 'There are no posts to display.';
}
Here is a reference to PHP HEREDOCS.