How to Verify URL Availability in PHP Without Triggering 404 Errors?

Verifying URL Availability Using PHP

If you need to ascertain the existence of a URL without triggering a 404 error in PHP, the following strategies are at your disposal:

Method 1: Using get_headers()

$file = 'http://www.example.com/somefile.jpg';
$file_headers = @get_headers($file);
if(!$file_headers || $file_headers[0] == 'HTTP/1.1 404 Not Found') {
    $exists = false;
}
else {
    $exists = true;
}

Method 2: Utilizing cURL

function url_exists($url) {
    return curl_init($url) !== false;
}

These methods allow you to determine whether a URL is accessible or not, safeguarding your application from returning undesirable 404 errors.

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