PHP 下载远程网页图片并且保存在本地实例

<?php
//URL是远程的完整图片地址，不能为空, $filename 是另存为的图片名字
//默认把图片放在以此脚本相同的目录里
function GrabImage($url,$filename=""){
        if($url == ""){
            return false;
        }
       
        $ext=strrchr($url,".");
       
        if($ext != ".gif" && $ext != ".jpg" && $ext != ".bmp" && $ext != ".png"){
            echo "格式不支持！";
            return false;
        }
       
        if($filename == ""){
            $filename = time()."$ext";
        }
       
        ob_start();
        readfile($url);
        $img=ob_get_contents();
        ob_end_clean();
        $size=strlen($img);
        $fp2=fopen($filename,"a");
        if(fwrite($fp2,$img) === false){
            echo "不能写入文件".$filename;
            exit();
        }else{
            echo "保存图片成功！";
        }
        fclose($fp2);
        return $filename;
       
    }
//测试
GrabImage("/logo.png","as.png");
?>

function DownImageKeep($gurl, $rfurl, $filename, $gcookie=”", $JumpCount=0, $maxtime=30)
{
$urlinfos = GetHostInfo($gurl);
$ghost = trim($urlinfos['host']);
if($ghost==”)
{
return FALSE;
}
$gquery = $urlinfos['query'];
if($gcookie==”" && !empty($rfurl))
{
$gcookie = RefurlCookie($rfurl);
}
$sessionQuery = “GET $gquery HTTP/1.1rn”;
$sessionQuery .= “Host: $ghostrn”;
$sessionQuery .= “Referer: $rfurlrn”;
$sessionQuery .= “Accept: */*rn”;
$sessionQuery .= “User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)rn”;
if($gcookie!=”" && !preg_match(“/[rn]/”, $gcookie))
{
$sessionQuery .= $gcookie.”rn”;
}
$sessionQuery .= “Connection: Keep-Alivernrn”;
$errno = “”;
$errstr = “”;
$m_fp = fsockopen($ghost, 80, $errno, $errstr,10);
fwrite($m_fp,$sessionQuery);
$lnum = 0;

//获取应答头
$m_httphead = Array();
$httpstas = explode(” “,fgets($m_fp,256));
$m_httphead["http-edition"] = trim($httpstas[0]);
$m_httphead["http-state"] = trim($httpstas[1]);
while(!feof($m_fp))
{
$line = trim(fgets($m_fp,256));
if($line == “” || $lnum>100)
{
break;
}
$hkey = “”;
$hvalue = “”;
$v = 0;
for($i=0; $i {
if($v==1)
{
$hvalue .= $line[$i];
}
if($line[$i]==”:”)
{
$v = 1;
}
if($v==0)
{
$hkey .= $line[$i];
}
}
$hkey = trim($hkey);
if($hkey!=”")
{
$m_httphead[strtolower($hkey)] = trim($hvalue);
}
}

if(preg_match(“/^3/”, $m_httphead["http-state"]))
{
if(isset($m_httphead["location"]) && $JumpCount<3) { $JumpCount++; DownImageKeep($gurl,$rfurl,$filename,$gcookie,$JumpCount); } else { return FALSE; } } if(!preg_match(“/^2/”, $m_httphead["http-state"])) { return FALSE; } if(!isset($m_httphead)) { return FALSE; } $contentLength = $m_httphead['content-length']; //保存图片 $fp = fopen($filename,”w”) or die(“写入文件：{$filename} 失败！”); $i=0; $okdata = “”; $starttime = time(); while(!feof($m_fp)) { $okdata .= fgetc($m_fp); $i++; //超时退出 if(time()-$starttime>$maxtime)
{
break;
}

//到达指定大小结束
if($i >= $contentLength)
{
break;
}
}
if($okdata!=”")
{
fwrite($fp,$okdata);
}
fclose($fp);
if($okdata==”")
{
@unlink($filename);
fclose($m_fp);
return FALSE;
}
fclose($m_fp);
return TRUE;
}
//获得网址的host和query部份
function GetHostInfo($gurl)
{
$gurl = preg_replace(“/^http:///i”, “”, trim($gurl));
$garr['host'] = preg_replace(“//(.*)$/i”, “”, $gurl);
$garr['query'] = “/”.preg_replace(“/^([^/]*)//i”, “”, $gurl);
return $garr;
}
//获得页面返回的Cookie信息
function RefurlCookie($gurl)
{
global $gcookie,$lastRfurl;
$gurl = trim($gurl);
if(!empty($gcookie) && $lastRfurl==$gurl)
{
return $gcookie;
}
else
{
$lastRfurl=$gurl;
}
if(trim($gurl)==”)
{
return ”;
}
$urlinfos = GetHostInfo($gurl);
$ghost = $urlinfos['host'];
$gquery = $urlinfos['query'];
$sessionQuery = “GET $gquery HTTP/1.1rn”;
$sessionQuery .= “Host: $ghostrn”;
$sessionQuery .= “Accept: */*rn”;
$sessionQuery .= “User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)rn”;
$sessionQuery .= “Connection: Closernrn”;
$errno = “”;
$errstr = “”;
$m_fp = fsockopen($ghost, 80, $errno, $errstr,10) or die($ghost.’
‘);
fwrite($m_fp,$sessionQuery);
$lnum = 0;

//获取详细应答头
$gcookie = “”;
while(!feof($m_fp))
{
$line = trim(fgets($m_fp,256));
if($line == “” || $lnum>100)
{
break;
}
else
{
if(preg_match(“/^cookie/i”, $line))
{
$gcookie = $line;
break;
}
}
}
fclose($m_fp);
return $gcookie;
}

$fp = fopen('qq.txt','w+');
for( $i=0; $i<1000000000; $i++ ){
    $str = mt_rand(10000,9999999999)."n";
    fwrite($fp,$str);
}
fclose($fp);

$results = array();
foreach( glob('/tmp/qq/*') as $file ){
    $fp = fopen($file,'r');
    $arr = array();
    while( $qq = fgets($fp) ){
        $qq = trim($qq);
        isset($arr[$qq]) ? $arr[$qq]++ : $arr[$qq]=1;
    }
    arsort($arr);
    //以下处理方式存在问题
    do{
        $i=0;
        foreach( $arr as $qq=>$times ){
            if( $i > 10 ){
                isset($results[$qq]) ? $results[$qq]+=$times : $results[$qq]=$times;
                $i++;
            } else {
                break;
            }
        }
    } while(false);
    fclose($fp);
}
if( $results ){
    arsort($results);
    do{
        $i=0;
        foreach( $results as $qq=>$times ){
            if( $i > 10 ){
                echo $qq . "t" . $times . "n";
                $i++;
            } else {
                break;
            }
        }
    } while(false);
}

awk -F '\@' '{name[$1]++ } END {for (count in name) print name[count],count}' qq.txt |sort -n > 123.txt

<?php
session_start();//定义session，同一IP登录不累加
$filepath = 'count.txt';
if ($_SESSION['temp'] == '')//判断$_SESSION[temp]的值是否为空,其中的temp为自定义的变量
{
 if (!file_exists($filepath))//检查文件是否存在，不存在刚新建该文件并赋值为0
 {
  $fp = fopen($filepath,'w');
  fwrite($fp,0);
  fclose($fp);
  counter($filepath);
 }else
 {
  counter($filepath);
 }
 $_SESSION['temp'] = 1;//登录以后,给$_SESSION[temp]赋一个值1
}
echo '欢迎来到懒人站长素材网站，您是本站第<font color="#FF0000">'.file_get_contents($filepath).'</font>位访客';
//counter()方法用来得到文件内的数字

function counter($f_value)
{
 //用w模式打开文件时会清空里面的内容，所以先用r模式打开，取出文件内容，保存到变量
 $fp = fopen($f_value,'r') or die('打开文件时出错。');
 $countNum = fgets($fp,1024);
 fclose($fp);
 $countNum++;
 $fpw = fopen($f_value,'w');
 fwrite($fpw,$countNum);
 fclose($fpw);
}
//注释下面一行可以实现同一IP登录不累加效果，测试时可以打开
session_destroy();
?>

CREATE TABLE `mycounter` (
`id` int(11) NOT NULL auto_increment,
`Counter` int(11) NOT NULL,
`CounterLastDay` int(10) default NULL,
`CounterToday` int(10) default NULL,
`RecordDate` date NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk AUTO_INCREMENT=2 ;

<?PHP
session_start();
if( !isset($_COOKIE["user"]) ){
setcookie("user","newGuest",time()+3600);
}else {
setcookie("user","oldGuest");
}
?>

<?php
    $aid  = isset( $_GET['aid'] )?$_GET['aid']:'';
    $t = isset( $_GET['t'] )?$_GET['t']:'';
 if(intval( $aid )){
  if( $t =='show' ){
    echo "document.write('这里是显示浏览次数,可以从数据库读出来');";
  }
  else{
    $conn = mysql_connect('localhost','root','root') ;
    $sql = "Update count set click_num = click_num+1 where aid ='$aid'";
    mysql_db_query('db_test',$sql,$conn);
  }
 }
?>

--
-- 表的结构 `count`
--
CREATE TABLE IF NOT EXISTS `count` (
  `id` int(11) NOT NULL auto_increment,
  `aid` int(11) default NULL,
  `click_num` int(11) default NULL,
  PRIMARY KEY  (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk AUTO_INCREMENT=2 ;

$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);
//设置curl默认访问为IPv4
if(defined('CURLOPT_IPRESOLVE') && defined('CURL_IPRESOLVE_V4')){
      curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
}

//设置curl请求连接时的最长秒数，如果设置为0，则无限
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
//设置curl总执行动作的最长秒数，如果设置为0，则无限
curl_setopt ($ch, CURLOPT_TIMEOUT,$timeout*3);
$file_contents = curl_exec($ch);
curl_close($ch);

@header("http/1.1 404 not found");
@header("status: 404 not found");
include("404.html");//跳转到某一个页面，推荐使用这种方法
exit();

function getref()
{
 $url = @$_SERVER['HTTP_REFERER'];
 if( !empty( $url ) )
 {
  if( !strstr($url ,'111cn.net' ) && !strstr($url,'111cn.net'))
  {
   @header("http/1.1 404 not found");
   @header("status: 404 not found");
   include("404.html");//跳转到某一个页面，推荐使用这种方法
   exit();
  }
 }
 else
 {
  @header("http/1.1 404 not found");
  @header("status: 404 not found");
  include("404.html");//跳转到某一个页面，推荐使用这种方法
  exit();
 }
}