PHP renaming string if string already exists - php

Question

I am storing some data in an array and I want to add the key to it if the title already exists in the array. But for some reason it's not adding the key to the title.
Here's my loop:
$data = [];
foreach ($urls as $key => $url) {
$local = [];
$html = file_get_contents($url);
$crawler = new Crawler($html);
$headers = $crawler->filter('h1.title');
$title = $headers->text();
$lowertitle = strtolower($title);
if (in_array($lowertitle, $local)) {
$lowertitle = $lowertitle.$key;
}
$local = [
'title' => $lowertitle,
];
$data[] = $local;
}
echo "<pre>";
var_dump($data);
echo "</pre>";

Answer 1

You will not find anything here:
foreach ($urls as $key => $url) {
$local = [];
// $local does not change here...
// So here $local is an empty array
if (in_array($lowertitle, $local)) {
$lowertitle = $lowertitle.$key;
}
...
If you want to check if the title already exists in the $data array, you have a few options:
You loop over the whole array or use an array filter function to see if the title exists in $data;
You use the lowercase title as the key for your $data array. That way you can easily check for duplicate values.
I would use the second option or something similar to it.
A simple example:
if (array_key_exists($lowertitle, $data)) {
$lowertitle = $lowertitle.$key;
}
...
$data[$lowertitle] = $local;