How can one check if a URL exists in PHP?

To check if a URL exists in PHP, you can use the `get_headers()` function to retrieve the headers of the URL. If the URL exists, the function will return an array of headers, including the HTTP status code. You can then check if the status code is within the range of 200 to 399 to determine if the URL exists. 

function urlExists($url){
    $headers = @get_headers($url);
    if($headers && strpos($headers[0], '200') !== false){
        return true;
    } else {
        return false;
    }
}

$url = "https://www.example.com";
if(urlExists($url)){
    echo "URL exists";
} else {
    echo "URL does not exist";
}

Keywords

PHP URL file_get_contents get_headers HTTP status code

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