How to show title and URL from SQL - php

Question

I hope someone can help me with this puzzle!
I have this code:
<?php
$user = 'myuser';
$pass = 'mypass';
try{
$dbh = new PDO('mysql:host=localhost;dbname=mybase', $user, $pass);
foreach($dbh->query('SELECT title FROM ads_listing') as $title);
foreach($dbh->query('SELECT slug FROM ads_listing') as $slug){
print_r($slug);
print_r($title);
}
$dbh = null;
} catch (PDOException $e){
print "ERROR!:" . $e->getMessage() . "<br/>";
die();
}
?>
It display:
Array ( [slug] => laptop-dell-e6420-in-good-condition-tj304mkn910a8 [0] => laptop-dell-e6420-in-good-condition-tj304mkn910a8 ) 1Array ( [title] => VW POLO Comfortline [0] => VW POLO Comfortline ) 1Array ( [slug] => vw-polo-comfortline-rf839h9c9d065 [0] => vw-polo-comfortline-rf839h9c9d065 ) 1Array ( [title] => VW POLO Comfortline [0] => VW POLO Comfortline )
The goal is to display from my table 10 random titles as an URL with the slug like: VW POLO Comfortline, Laptop dell e6420 in good condition,.
How can I do it please?

Answer 1

You just need to use LIMIT and RAND() in your query like:
SELECT title, slug FROM ads_listing ORDER BY RAND() LIMIT 10
then use this query and function fetch_assoc() to have the result in associative array type:
<?php
$query = "SELECT title, slug FROM ads_listing ORDER BY RAND() LIMIT 10";
$result = $connection -> query($query);
while($row = $result -> fetch_assoc()){
// you can use $row which has been read from table randomly
...
}
?>
in the previous code, $connection is the connection which has been got from PDO class. Obviously, you do not have to use exactly like what I wrote, but I suggest to you use one.

Answer 2

There are quite a few things going on here from a puristic point of view, but I think there are two things that are preventing you from solving this:
You don't fetch your data in a single query
You don't loop your data in a single loop
Going along with the assumption that $dbh->query() returns an associative array, you could do the following:
$user = 'myuser';
$pass = 'mypass';
try{
$dbh = new PDO('mysql:host=localhost;dbname=mybase', $user, $pass);
} catch (PDOException $e){
print "ERROR!:" . $e->getMessage() . "<br/>";
die();
}
$ads = $dbh->query('SELECT title, slug FROM ads_listing');
foreach ($ads as $ad) {
$title = $ad['title'];
$slug = $ad['slug'];
}