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 vote247 views3 answers
Valet switch php version
PHP
16 votes260 views6 answers
Target class does not exist.
PHP
2 votes258 views2 answers
Laravel validation if data exists
PHP
0 vote244 views1 answer
Which song has the most curse words
PHP
8 votes270 views2 answers
How to debug php
PHP
0 vote247 views2 answers
Change Initial Country For Caldera Forms Phone Fields
PHP
20 votes238 views6 answers
Destroy session php
PHP
1 vote229 views1 answer
Laravel date diff
PHP
0 vote257 views1 answer
Get return value from another function laravel
PHP
0 vote248 views1 answer
Php tipi array
PHP