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

1 vote353 views1 answer
Laravel createmany example
PHP Laravel
0 vote354 views1 answer
The_post_thumbnail add class
PHP
0 vote282 views1 answer
Php www to non www redirect
PHP
1 vote350 views1 answer
Laravel queue work schedule cpanel
PHP
0 vote346 views1 answer
Php array of states in Nigeria
PHP
0 vote335 views1 answer
Delete a single record in laravel 5
PHP Laravel
0 vote345 views1 answer
Créer projet laravel
PHP Laravel
2 votes299 views2 answers
Stristr php
PHP
7 votes340 views3 answers
Laravel table in model
PHP Laravel
14 votes357 views5 answers
Laravel model tablename
PHP Laravel