Validate if correct image url php

If you want to be absolutely sure, and your PHP is enabled for remote 
connections, you can just use "getimagesize('url')"

function validImage($url) {
   return stripos(getimagesize($url)['mime'], 'image') === 0;
}

$image = validImage('http://www.example.com/image.jpg');

If it returns an array, it is an image type recognized by PHP, even if the 
image extension is not in the url (per your second link). You have to keep in
mind that this method will make a remote connection for each request, so 
perhaps cache urls that you already probed in a database to lower connections.

Similar codes

0 vote105 views2 answers
Php json decode not working on array
PHP
0 vote125 views1 answer
Auth log out laravel
PHP
0 vote141 views1 answer
Yii2 label of ActiveField
PHP Yii
0 vote104 views1 answer
Composer require guzzlehttp/guzzle
PHP
0 vote125 views1 answer
Laravel session wont update
PHP
1 vote119 views2 answers
How to make active color in menu laravel
PHP Laravel
9 votes160 views4 answers
Composer require laravel/ui laravel 7
PHP Laravel
2 votes107 views2 answers
Route:: "resourceverbs([]);" Class 'App\Providers\Route' not found
PHP
0 vote125 views1 answer
Laravel 6 use username instead of id
PHP Laravel
1 vote122 views1 answer
Laravel realation with has
PHP Laravel