Checks a CSV list of links for header like X-Frame-Options and outputs a CSV whit added header information.

checkLink.php

<?php

$csv = fopen('in.csv', 'r');
$out = fopen('out.csv', 'w');
$number = 0;
while($line = fgetcsv($csv, 0, ',', '"')){
    echo "Processing Line $number: ".var_export($line[2], true)."\n";
    $url = array_pop($line); // Last field should contain the URL to check
    if(strpos($url, 'http') > -1){
        $link = @fopen($url, 'r');
        if(!$link) {
            $error = error_get_last();
            echo "Error reading URL: ".$error['message']."\n";
            $line[] = 'ERROR: '. $error['message'];
        }
        else {
            $meta = stream_get_meta_data($link);
            fclose($link);
            $headers = array();
            foreach ($meta['wrapper_data'] as $response) {
                if(strpos(strtolower($response), 'content-security-policy') > -1 || strpos(strtolower($response), 'x-frame-options') > -1){
                    $headers[] = $response;
                }
            }
            $line[] = implode(' | ', $headers);
        }
    }
    else {
        $line[] = $number == 0 ? 'header' : '';
    }
    $line[] = $url;
    fputcsv($out, $line, ',', '"');
    $number++;
}