Is alive backlink

is-alive-backlink.php

<?php
function is_alive_bl($url,$on){
		if (function_exists('curl_init')) {
	        $ch = curl_init();
	        $options = array(
	            CURLOPT_URL => $on,
	            CURLOPT_HEADER => false,
	            CURLOPT_RETURNTRANSFER => true,
	            //CURLOPT_FOLLOWLOCATION => true,
	            CURLOPT_MAXREDIRS => 3,
	            CURLOPT_TIMEOUT => 20,
	            CURLOPT_SSL_VERIFYHOST => false,
	            CURLOPT_SSL_VERIFYPEER => false,
	            CURLOPT_USERAGENT => 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36',
	            CURLOPT_HTTPHEADER => array('Connection: close', 'Cache-Control: no-cache'),
	        );
	        curl_setopt_array($ch, $options);
	        $data = curl_exec($ch);


	    } // No cURL, try file_get_contents
	    else {
	        $data = @file_get_contents($on);
	    }
	    // Did we succeed?
	    if ($data === false || strlen($data) < 1) {
	        return false;
	    } else {	    
		    // Convert all code to lowercase
		    $html = strtolower($data);
		    
		    // Remove "https" and "www" for verification purposes
		    $site_url = str_replace(array('https://', 'http://www.'), array('http://', 'http://'), strtolower($url));
		    $site_url = @trim($site_url, '/');
		    
		    // Can we find the reciprocal link?
		    if (preg_match_all('/<a\s[^>]*href=([\"\']??)([^" >]*?)\\1([^>]*)>/siU', $html, $matches, PREG_SET_ORDER)) {
		    	//echo '<pre>';var_dump($matches);
		        foreach ($matches as $match) {
		            $match[2] = str_replace(array('https://', 'http://www.'), array('http://', 'http://'), $match[2]);
		            // on vire les repartoire et les param get
		            
		            $match[2] = @explode('?', $match[2], 2)[0];
		            $formatmatch = @trim($match[2],'/');
		            //echo $formatmatch.' == '.$site_url.chr(10);
		            if ( $formatmatch == $site_url) {
		                // All OK
		                return true;
		            }
		        }
		    }
		    // No reciprocal link found
		    return false;
	    }
}


// Utilisation
	$url = 'URL DE VOTRE SITE';
	$on = 'URL DE LA PAGE A VERIFIER';
	if (is_alive_bl($url,$on) != false){

		echo $url. ' Trouvé sur '.$on;

	}else{ 
		echo "Erreur de scrape";
	}