PDO foreach isn't displaying data being fetched - php

Question

So here I have a blog system.
My problem is that when I try to pull out data from the database, it is not displaying. Here is my current code, thanks!
index.php
<h1>News Blog</h1>
<form action="blog.php" method="POST">
username: <input type="name" name="name" placeholder="name"><br />
<textarea name="body" rows="10" cols="70"></textarea><br/>
<input type='submit' name='submit' value='Post' />
</form>
<?php
if(isset($_POST['name'], $_POST['body'])){
require'core/connect.php';
$query = dbConnect()->prepare("SELECT name, body FROM blog WHERE name =:name AND body = :body");
$query->bindParam(1, $_POST['name']);
$query->bindParam(2, $_POST['body']);
foreach($query-> fetchAll(PDO::FETCH_ASSOC) as $row){
echo $row['name'], '<br/><hr>';
echo $row['body'];
}
}
?>
Here is my blog.php if its necessary
<?php
if(isset($_POST['name'], $_POST['body'])){
require'core/connect.php';
$query = dbConnect()->prepare("INSERT INTO blog (name, body) VALUES (?,?)");
$query->bindParam(1, $_POST['name']);
$query->bindParam(2, $_POST['body']);
if($query->execute()){
echo 'Thank you for posting! Click here to go back.';
} else{
echo 'There has been an error';
}
}
?>

Answer 1

You need to fix your parameter binding first. You are using named placeholders in your query but using 1-indexed parameters in your bindParam calls. Then you also need to execute the query:
$query = dbConnect()->prepare("SELECT name, body FROM blog WHERE name =:name AND body = :body");
$query->bindParam(':name', $_POST['name']);
$query->bindParam(':body', $_POST['body']);
$query->execute();
foreach($query->fetchAll(PDO::FETCH_ASSOC) as $row){
echo $row['name'], '<br/><hr>';
echo $row['body'];
}

Answer 2

You have to execute your statement before fetch, and for a list page, you don't have to add the where part in your sql. There is no data post to the index.php.
Just change to below:
<?php
require'core/connect.php';
$query = dbConnect()->prepare("SELECT name, body FROM blog");
$query->execute();
foreach($query->fetchAll(PDO::FETCH_ASSOC) as $row){
echo $row['name'], '<br/><hr>';
echo $row['body'];
}
?>