PHP远程图片抓取程序

images.info.php

header("Content-Type; text/json; charset=utf-8");
$Single=$_GET["Single"];
$more=$_GET["more"];
$TargetUrl=$_POST["TargetUrl"];
$Save=$_POST["Save"];
//判断是抓取单个图片还是多个图片
if ($Single=="Single") {
 $ImageCatch=new ImageCatch($TargetUrl,$Save);
 $ImageCatch->S();
}else if ($more=="more") {
 $ImageCatch=new ImageCatch($TargetUrl,$Save);
 $ImageCatch->M();
}
//图片抓取类
class ImageCatch {
 private $TargetUrl;  //目标地址
 private $Save;  //保存地址
 private $FileName; //文件名称及路径
 private $Type;  //文件类型
 private $Size;  //文件大小
 //构造函数
 public function __construct($TargetUrl,$Save) {
  $this->TargetUrl=str_replace(""","",$TargetUrl);   //去掉单引号
  $this->Save=$Save;
 }
 //CSS样式表中图片抓取方法
 public function CSS() {
  $content=@file_get_contents($this->TargetUrl);
  //CSS图片过滤
  preg_match_all("//i",$content,$css);
  $css[1]=array_unique($css[1]);//移除重复的值
  $match2=array();
  if (count($css[1])>0) {
   foreach($css[1] as $val) {
    if (!preg_match("/^(https?://)/i",$val)) {
     $val=$this->TargetUrl."/".$val;
     $csscontent=@file_get_contents($val);
    }else {
     $csscontent=@file_get_contents($val);
    }
    //匹配图片URL地址
    preg_match_all("/url((.*))/i",$csscontent,$cssimg);
    $cssimg[1]=array_unique($cssimg[1]);//移除重复的值
   }   
   foreach($cssimg[1] as $val) {
    //去除 " ) 字符
    $val=preg_replace(array("/"|)/"),"",$val);
    //去除../字符
    $val=str_replace("../","",$val);
    //检查是否是http://开头，如果不是则加上要抓取的网址
    if (!preg_match("/^(https?://)/i",$val)) {
     array_push($match2,$this->TargetUrl."/".$val);
    }else {
     array_push($match2,$val);
    }
   }
   return $match2;
  }
 }
 //计算并返回图片数量及地址
 public function M() {
  $content=@file_get_contents($this->TargetUrl);
  //网页图片过滤
  $str="//i";
  preg_match_all($str,$content,$res);
  if ($res[1]) {
   $res[1]=array_unique($res[1]);//移除重复的值
   $httpstr="/^(https?://)/i";
   $match=array();
   foreach($res[1] as $val) {
    if (!preg_match($httpstr,$val)) {
     array_push($match,$this->TargetUrl."/".$val);
    }else {
     array_push($match,$val);
    }
   }
   $cssimg=$this->CSS();
   //扫描出css文件图片的总数与网页图片相加得到总数
   $total=array("total"=>count($match)+count($cssimg));
   $result=array_merge($total,$match,$cssimg);
   //返回JSON数据
   echo json_encode($result);
  }else {
   $res=array("no");
   echo json_encode($res);
  }
  exit;
 }
 //抓取并保存图片
 public function S() {
  $this->Type=substr(strrchr($this->TargetUrl,"."),1);
  $this->FileName=$this->Save."/".substr(strrchr($this->TargetUrl,"/"),1);
  $this->imageType();
  $content=@file_get_contents($this->TargetUrl);
  $this->imageDir();
  if (!@file_put_contents($this->FileName,$content,FILE_USE_INCLUDE_PATH)) {
   @unlink($this->FileName);
   exit("{"status":"没有找到 ".$this->TargetUrl." 图片"}");
  }else {
   $this->imageSize();
   exit("{"status":"ok","FileSave":"".$this->FileName."","FileSize":"".$this->Size.""}");
  }
 }
 //新建目录
 private function imageDir() {
  if (!@file_exists($this->Save)) {
   if (!@mkdir($this->Save,0700)) {
    exit("{"status":"新建保存目录失败"}");
   }
  }
 }
 //文件类型判断
 private function imageType() {
  $typeArr=array("jpg","png","gif","zip","rar");
  if (!in_array($this->Type,$typeArr)) {
   exit("{"status":"要执行抓取的文件扩展名有错误,".$this->TargetUrl.""}");
  }
 }
 //文件大小检测
 private function imageSize() {
  if (file_exists($this->FileName)) {
   $this->Size=filesize($this->FileName);
   if ($this->Size>1024*1024*1024) {
    $this->Size=round($this->Size/1024/1024/1024,2)." GB";
   }else if ($this->Size>1024*1024) {
    $this->Size=round($this->Size/1024/1024,2)." MB";
   }else if ($this->Size>1024) {
    $this->Size=$this->Size/1024;
    $this->Size=ceil($this->Size)."KB";
   }else {
    $this->Size=$this->Size."bit";
   }
  }else {
   return "未找到文件";
  }
 }
}
?>

[php ajax远程图片上传]PHP+Ajax远程图片抓取器下载的例子

http://m.bbyears.com/asp/49552.html