请帮我写一个网站防采集代码，需要用到PHP网站上
2023/03/30 11:37:17
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- User-Agent 妫娴嬶細妫鏌ヨ闂呯殑 User-Agent 鏄惁涓烘祻瑙堝櫒锛屽鏋滀笉鏄紝鍒欏垽瀹氫负閲囬泦绋嬪簭銆
if (stripos($_SERVER['HTTP_USER_AGENT'], 'Mozilla') === false) { exit('绂佹閲囬泦锛');}
- Referer 妫娴嬶細妫鏌ヨ闂呯殑 Referer 鏄惁涓烘湰绔欙紝濡傛灉涓嶆槸锛屽垯鍒ゅ畾涓洪噰闆嗙▼搴忋
if (strpos($_SERVER['HTTP_REFERER'], 'http://www.yourwebsite.com') === false) { exit('绂佹閲囬泦锛');}
- 璁块棶棰戠巼闄愬埗锛氳缃竴涓椂闂撮棿闅旓紝濡傛灉鐭椂闂村唴璁块棶娆℃暟杩囧锛屽垯鍒ゅ畾涓洪噰闆嗙▼搴忋
$seconds = 10; // 鏃堕棿闂撮殧锛屽崟浣嶄负绉$count = 0;$log_file = 'access.log'; // 璁板綍璁块棶鏃ュ織鐨勬枃浠跺悕// 璇诲彇璁块棶鏃ュ織if (file_exists($log_file)) { $log = file_get_contents($log_file); $log_array = explode("\n", $log); $last_time = end($log_array); $time_diff = time() - $last_time; foreach ($log_arrayas$log_item) { if (time() - $log_item <= $seconds) { $count++; } }}// 鍐欏叆璁块棶鏃ュ織$fp = fopen($log_file, 'a');fwrite($fp, time() . "\n");fclose($fp);// 鍒ゆ柇璁块棶棰戠巼if ($count > 10) { exit('绂佹閲囬泦锛');}
- 鍥剧墖楠岃瘉鐮侊細鍦ㄥ叧閿〉闈㈡垨鑰呮搷浣滀笂娣诲姞鍥剧墖楠岃瘉鐮侊紝瑕佹眰鐢ㄦ埛杈撳叆楠岃瘉鐮佹墠鑳界户缁搷浣溿
session_start();$code = ''; // 楠岃瘉鐮$width = 80; // 鍥剧墖瀹藉害$height = 30; // 鍥剧墖楂樺害$font_size = 16; // 瀛椾綋澶у皬$font_file = 'arial.ttf'; // 瀛椾綋鏂囦欢璺緞$code_length = 4; // 楠岃瘉鐮侀暱搴// 鐢熸垚闅忔満楠岃瘉鐮乫or ($i = 0; $i < $code_length; $i++) { $code .= chr(rand(97, 122));}// 灏嗛獙璇佺爜淇濆瓨鍒 session 涓$_SESSION['code'] = $code;// 鍒涘缓鍥惧儚$image = imagecreatetruecolor($width, $height);// 璁剧疆鑳屾櫙棰滆壊$bg_color = imagecolorallocate($image, 255, 255, 255);imagefill($image, 0, 0, $bg_color);// 璁剧疆鏂囨湰棰滆壊$text_color = imagecolorallocate($image, 0, 0, 0);// 娣诲姞楠岃瘉鐮佹枃鏈琲magettftext($image, $font_size, 0, 10, $height / 2 + $font_size / 2, $text_color, $font_file, $