Making IDs unique in HTML - php

Question

I'm such a noob at PHP. I'm really stuck on this and could do with some help!
I'm using the following code to control if a div class and span ID appears when a variable (e.g. $project1title and $project1description) is empty/not empty.
$html = '<div class="infobar"><div class="infobar-close"></div>';
$content = false;
if ($project1title !== '' && $project1description !== '')
{
$html .= '<span id="title"></span><span id="description"></span>';
$content = true;
}
// etc.
$html .= '</div>';
if ($content)
{
echo $html;
}
The code works fine when I've only got one project title & description there but when I start adding ($project2title !== '' && $project2description !== '') if ($project3title !== '' && $project3description !== ''), etc it messes up because I need a unique ID for each project title & description. My question is, how can I make each of them have a unique ID? (Would I need to use arrays?) And once I've given each project a unique ID, where in the code above would I need to declare each unique ID?

Answer 1

What about this :
<?php
$projects = array(
array(
'title' => 'myTitle',
'description' => 'my description',
),
array(
'title' => 'myTitle2',
'description' => 'my description2',
),
);
$html = '<div class="infobar"><div class="infobar-close"></div>';
$content = false;
$id = 1;
foreach($projects as $project){
if(!empty($project['title']) && !empty($project['description'])){
$html .= '<span id="title'. $id .'"></span><span id="description'. $id .'"></span>';
$content = true;
}
$id++;
}
$html .= '</div>';
if ($content) {
echo $html;
}
Note that if id is important for you, you can add an id key in the projects array.
Does that help ?
Alternatively, I think you should take a look at dynamic vars :
here is simple example of what you can do with them :
<?php
$html = '<div class="infobar"><div class="infobar-close"></div>';
$content = false;
for($i = 1;$i<=10;$i++){
$title = 'project' . $i . 'title';
$description = 'project' . $i . 'description';
if (isset($$title) && isset($$description) && $$title !== '' && $$description !== '')
{
$html .= '<span id="title'. $i .'"></span><span id="description'. $i .'"></span>';
$content = true;
}
}
$html .= '</div>';
if ($content)
{
echo $html;
}

Answer 2

Shouldn't the operations be:
!=
instead of
!==
?