58 lines
1.7 KiB
PHP
58 lines
1.7 KiB
PHP
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<?php
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if(isset($_POST['link'])) {
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$link = $_POST['link'];
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//remove protocol, we're assuming its http
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if(strstr($link, '://') != false){
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$link = substr($link, strpos($link,'://') + strlen('://'));
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}
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//split the url into host (www.example.com) and requested page (index.php) on the first slash
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$host = substr($link, 0, strpos($link, '/'));
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$request = substr($link, strpos($link, '/'));
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//open a socket connection to the site on port 80 (http protocol port)
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$fp = @fsockopen($host, 80, $errno, $errstr);
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if($fp == false){
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$response = $errno . " " . $errstr;
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}
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else {
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//create the request headers
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$headers = array();
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$headers[] = 'HEAD ' . $request . ' HTTP/1.1';
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$headers[] = 'Host: ' . $host;
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$headers[] = 'Content-Length: 0';
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$headers[] = 'Connection: close';
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$headers[] = 'Content-Type: text/html';
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$headers = implode("\r\n", $headers) . "\r\n\r\n";
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//send our request
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if (!fwrite($fp, $headers)) {
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fclose($fp);
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$response = "Could not access webpage specified.";
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}
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else {
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//read the response
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$rsp = '';
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while(!feof($fp)) { $rsp .= fgets($fp,8192); }
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fclose($fp);
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$hunks = explode("\r\n\r\n",trim($rsp));
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$headers = explode("\n", $hunks[count($hunks) - 1]);
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$response = trim($headers[0]);
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}
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}
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}
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?>
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<html>
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<head>
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<title>Test Link</title>
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</head>
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<body>
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<?php if(isset($response)) { echo $response; } ?>
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<form method="post">
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<label for="link">Link</label>
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<input id="link" type="text" name="link" />
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</form>
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</body>
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</html>
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