1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <title>根据css文件采集图片</title> 6 </head> 7 <body> 8 <?php 9 class get_pic_from_css { 10 11 var $path = '.'; 12 var $match = 'background:url((.*?))'; 13 var $url = 'http://xxxx.com/web/Tpl/Home/Public'; 14 var $flag = '..'; 15 // var $absolute_address; // 绝对地址 16 // var $relative_address; // 相对地址 17 18 // function __construct(){ 19 // 20 // } 21 22 function work(){ 23 $array = $this->relative_to_absolute(); 24 echo "数组长度".count($array)."<hr>"; 25 foreach($array as $row){ 26 $local = $this->my_substr($row, '/images/', '.'); 27 $ext = substr($row,-4); 28 $this->down_pic($row, $local.$ext); 29 } 30 } 31 32 // 下载图片 33 function down_pic($url_file, $local_file){ 34 if(file_exists($local_file)){ 35 echo $local_file."存在<br/>"; 36 }else{ 37 $contents = file_get_contents($url_file); 38 $fp = fopen($local_file,"w+"); 39 fwrite($fp,$contents); 40 fclose($fp); 41 echo $url_file.'------------------ok<br/>'; 42 } 43 44 print str_repeat(" ", 4096); 45 ob_flush(); 46 flush(); 47 } 48 // 截取字符串 49 function my_substr($str,$start,$end){ 50 $arr = explode($start,$str); 51 $arr = explode($end,$arr[1]); 52 return $arr[0]; 53 } 54 55 // 相对路径变成绝对路径 56 function relative_to_absolute(){ 57 $array = $this->get_pic_to_array(); 58 $chage = array($this->flag => $this->url); 59 foreach($array as $row){ 60 $array_new[] = strtr($row,$chage); 61 } 62 return $array_new; 63 } 64 65 // 所有匹配的结果保存到一个数组 66 function get_pic_to_array(){ 67 $array = array(); 68 $csses = $this->get_css_files($this->path); 69 foreach($csses as $css){ 70 $matches = $this->get_matches_from_css($css); 71 $array = array_merge($array, $matches); 72 } 73 // 去掉数组中重复的项目 74 $array = array_unique($array); 75 return $array; 76 } 77 78 // 浏览本文件夹所以css文件保存到数组 79 function get_css_files($path){ 80 $handle=opendir($path); 81 while ($file = readdir($handle)) { 82 if(substr(strrchr($file, "."), 1) == "css"){ 83 $csses[] = $file; 84 } 85 } 86 closedir($handle); 87 return $csses; 88 } 89 90 // 浏览单独css文件匹配的背景保存到数组 91 function get_matches_from_css($file){ 92 $html = file_get_contents($file); 93 preg_match_all ('/'.$this->match.'/', $html, $matches); 94 // $matches[0]为匹配到的全部 $matches[1]为匹配到的子项 95 return $matches[1]; 96 } 97 98 } 99 100 set_time_limit(0); 101 $go = new get_pic_from_css(); 102 $go->work(); 103 ?> 104 </body> 105 </html>