Backlink Checker
$url - your website URL
$email - your email
$fromEmail - your email
$subject - subject of report
$body - No need to really modify
$backlinkSources - The sources that have your site URL
<?php/* Your Website URL. Leave out the http://
* and only include the base domain
*/$url = 'free-php-script.blogspot.com';
/*
* Your email, the place you want the report
* to arrive at
*/$email = 'your@email.com';
/*
* Email the report is being sent from
*/$fromEmail = 'from@email.com';
/*
* Subject of the report email when a backlink
* is not found on a source
*/$subject = "Backlink not found on Source: $url";
/*
* Body header text
*/ $body = "Hai, a source that was suppose to contain a backlink to your website no longer does. Please see below.\r\n\r\n";
/*
* Backlink Sources
*/$backlinkSources = array ('http://google.com/',
'http://yahoo.com/',
'http://free-php-script.blogspot.com'
);
/*
* This is a place holder variable which will
* be used to hold the true/false variables
* for report generation
*/$reportArray = array();
/*
* Bool value used to determine if any false
* values are found
*/$falseFound = false;
/*
* Begin checking the backlinks for the target
* URL
*/foreach ($backlinkSources as $source) {
// Get the HTML source Code
$html = file_get_contents ( $source );
// Extract all Links
$links = ExtractHrefLinks($html);
// Determine if the links contain your site URL
if (CheckForTargetUrl($links, $url) === false) {
$falseFound = true;
$reportArray[$source] = 0;
} else {
$reportArray[$source] = 1;
}
}
/*
* Dump our results for browser output
*/print_r($reportArray);
/*
* If a backlink is not found on a source,
* Generate an email.
*/if ($falseFound === true) {
GenerateReportEmail($email, $fromEmail, $subject, $body, $url, $reportArray);
}
/**
* Send the report email when a source is found that does
* not have a backlink
*
* @var email string
* @var fromEmail string
* @var subject string
* @var body string
* @var url string
* @var reportArray array
*
* @return null
*/function GenerateReportEmail($email, $fromEmail, $subject, $body, $url, $reportArray) {
// Create an email header
$header = "From: " . $fromEmail . "\r\n"; //optional headerfields
/*
* Loop through the results to form the
* report
*/
foreach ($reportArray as $key => $report) {
if ($report == false) {
$body .= "Backlink to $url not found on: $key\n";
}
}
// Send the email
mail($email, $subject, $body, $header);
}
/**
* Determine if the array of links contain the
* target URL (your URL)
*
* @var links array of source URLs
* @var target URL of target website (your website)
* @return bool
*/function CheckForTargetUrl($links, $target) {
/*
* Loop through all of the links in the array. Use
* strpos to test if string is found in link text
*/
foreach ($links as $link) {
if (strpos($link, $target) !== false) {
return true;
}
}
// Return
return false;
}
/**
* Extract all href Links from an HTML
* document/text
*
* @vars html source code of site
* @return array
*/function ExtractHrefLinks($html) {
//Create a new DOM document
$dom = new DOMDocument;
$linkUrls = array();
/*
* Parse the HTML. The @ is used to suppress any parsing errors
* that will be thrown if the $html string isn't valid XHTML.
*/
@$dom->loadHTML($html);
/*
* Get all links. You could also use any other tag name here,
* like 'img' or 'table', to extract other tags.
*/
$links = $dom->getElementsByTagName('a');
//Iterate over the extracted links and display their URLs
foreach ($links as $link){
//Extract and show the "href" attribute.
$linkUrls[] = $link->getAttribute('href');
}
return $linkUrls;
}?>