How can I check if a URL exists via PHP?

Question

How do I check if a URL exists (not 404) in PHP?

Answer 1

get_headers() returns an array with the headers sent by the server in response to a HTTP request.

$image_path = 'https://your-domain.com/assets/img/image.jpg';

$file_headers = @get_headers($image_path);
//Prints the response out in an array
//print_r($file_headers); 

if($file_headers[0] == 'HTTP/1.1 404 Not Found'){
   echo 'Failed because path does not exist.
';
}else{
   echo 'It works. Your good to go!
';
}