当你在发送邮件时，你或许很想知道该邮件是否被对方已阅读。这里有段非常有趣的代码片段能够显示对方ip地址记录阅读的实际日期和时间。
| 1234567891011121314151617181920212223242526272829303132333435363738394041 | <?error_reporting(0);Header("Content-Type: image/jpeg");//Get IPif (!empty($_SERVER['HTTP_CLIENT_IP'])){$ip=$_SERVER['HTTP_CLIENT_IP'];}elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];}else{$ip=$_SERVER['REMOTE_ADDR'];}//Time$actual_time = time();$actual_day = date('Y.m.d', $actual_time);$actual_day_chart = date('d/m/y', $actual_time);$actual_hour = date('H:i:s', $actual_time);//GET Browser$browser = $_SERVER['HTTP_USER_AGENT'];//LOG$myFile = "log.txt";$fh = fopen($myFile, 'a+');$stringData = $actual_day . ' ' . $actual_hour . ' ' . $ip . ' ' . $browser . ' ' . "/r/n";fwrite($fh, $stringData);fclose($fh);//Generate Image (Es. dimesion is 1x1)$newimage = ImageCreate(1,1);$grigio = ImageColorAllocate($newimage,255,255,255);ImageJPEG($newimage);ImageDestroy($newimage);?> |
一段伟大的代码片段能够轻松的从网页中提取关键字。
| 12345678910 | $meta = get_meta_tags('http://www.emoticode.net/');$keyWords = $meta['keywords'];// Split keywords$keywords = explode(',', $keywords );// Trim them$keywords = array_map( 'trim', $keywords );// Remove empty values$keywords = array_filter( $keywords );PRint_r( $keywords ); |
源码
三、查找页面上的所有链接使用DOM，你可以轻松从任何页面上抓取链接，代码示例如下：
| 1234567891011121314 | $html = file_get_contents('http://www.example.com');$dom = new DOMDocument();@$dom->loaDHTML($html);/ |
