PHP下载远程图片并保存到本地方法总结_PHP

1.获取远程文件大小及信息的函数

function getFileSize($url){ 
$url = parse_url($url); 
if($fp = @fsockopen($url['host'],empty($url['port'])?80:$url['port'],$error)){ 
fputs($fp,"GET ".(empty($url['path'])?'/':$url['path'])." HTTP/1.1\r\n"); 
fputs($fp,"Host:$url[host]\r\n\r\n"); 
while(!feof($fp)){ 
$tmp = fgets($fp); 
if(trim($tmp) == ''){ 
break; 
}else if(preg_match('/Content-Length:(.*)/si',$tmp,$arr)){ 
return trim($arr[1]); 
} 
} 
return null; 
}else{ 
return null; 
} 
} 
echo getFileSize(http://www.dianpub.com/download/xml.rar)

2.图片

//记录程序开始的时间
$BeginTime=getmicrotime();
function GrabImage($url,$filename="") { 
if($url==""):return false;endif; 
if($filename=="") { 
$ext=strrchr($url,"."); 
if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
$filename=date("dMYHis").$ext; 
} 
ob_start(); 
readfile($url); 
$img = ob_get_contents(); 
ob_end_clean(); 
$size = strlen($img); 
$fp2=@fopen($filename, "a"); 
fwrite($fp2,$img); 
fclose($fp2); 
return $filename; 
} 
$img=GrabImage("http://www.dianpub.com/images/_1978837_detector_ap100.jpg",""); 
if($img):echo '<pre class="brush:php;toolbar:false"><img  src="/static/imghw/default1.png"  data-src="'.$img.'"  class="lazy".$img.'" alt="PHP下载远程图片并保存到本地方法总结_PHP" >

';else:echo "false";endif; //记录程序运行结束的时间 $EndTime=getmicrotime(); //返回运行时间 exit($EndTime-$BeginTime);

3.全文下载图片

if(!empty($saveremoteimg)) 
{ 
$body = stripslashes($body); 
$img_array = array(); 
preg_match_all("/(src|SRC)=[\"|'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))/isU",$body,$img_array); 
$img_array = array_unique($img_array[2]); 
set_time_limit(0); 
$imgUrl = $img_dir."/".strftime("%Y%m%d",time()); 
$imgPath = $base_dir.$imgUrl; 
$milliSecond = strftime("%H%M%S",time()); 
if(!is_dir($imgPath)) @mkdir($imgPath,0777); 
foreach($img_array as $key =>$value) 
{ 
$value = trim($value); 
$get_file = @file_get_contents($value); 
$rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3); 
$fileurl = $imgUrl."/".$milliSecond.$key.".".substr($value,-3,3); 
if($get_file) 
{ 
$fp = @fopen($rndFileName,"w"); 
@fwrite($fp,$get_file); 
@fclose($fp); 
} 
$body = ereg_replace($value,$fileurl,$body); 
} 
$body = addslashes($body); 
}

4.PHP远程文件下载类（支持断点续传）

1）.功能:支持断点续传的下载,能计算传输率,能控制传输率

简易使用方法:

$object = new httpdownload();
$object->set_byfile($file);//服务器文件名,包括路径
$object->filename = $filename;//下载另存为的文件名
$object->download();

类文件：

 null); 
var $use_resume = true; 
var $use_autoexit = false; 
var $use_auth = false; 
var $filename = null; 
var $mime = null; 
var $bufsize = 2048; 
var $seek_start = 0; 
var $seek_end = -1; 
var $totalsizeref = 0; 
var $bandwidth = 0; 
var $speed = 0; 
function initialize() { 
global $HTTP_SERVER_VARS; 
if ($this->use_auth) //use authentication { 
if (!$this->_auth()) //no authentication { 
header('WWW-Authenticate: Basic realm="Please enter your username and password"'); 
header('HTTP/1.0 401 Unauthorized'); 
header('status: 401 Unauthorized'); 
if ($this->use_autoexit) exit(); 
return false; 
} 
} 
if ($this->mime == null) $this->mime = "application/octet-stream"; //default mime 
if (isset(
1.获取远程文件大小及信息的函数

function getFileSize($url){ 
$url = parse_url($url); 
if($fp = @fsockopen($url['host'],empty($url['port'])?80:$url['port'],$error)){ 
fputs($fp,"GET ".(empty($url['path'])?'/':$url['path'])." HTTP/1.1\r\n"); 
fputs($fp,"Host:$url[host]\r\n\r\n"); 
while(!feof($fp)){ 
$tmp = fgets($fp); 
if(trim($tmp) == ''){ 
break; 
}else if(preg_match('/Content-Length:(.*)/si',$tmp,$arr)){ 
return trim($arr[1]); 
} 
} 
return null; 
}else{ 
return null; 
} 
} 
echo getFileSize(http://www.dianpub.com/download/xml.rar)

2.图片

//记录程序开始的时间
$BeginTime=getmicrotime();
function GrabImage($url,$filename="") { 
if($url==""):return false;endif; 
if($filename=="") { 
$ext=strrchr($url,"."); 
if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
$filename=date("dMYHis").$ext; 
} 
ob_start(); 
readfile($url); 
$img = ob_get_contents(); 
ob_end_clean(); 
$size = strlen($img); 
$fp2=@fopen($filename, "a"); 
fwrite($fp2,$img); 
fclose($fp2); 
return $filename; 
} 
$img=GrabImage("http://www.dianpub.com/images/_1978837_detector_ap100.jpg",""); 
if($img):echo '<pre class="brush:php;toolbar:false"><img  src="/static/imghw/default1.png"  data-src="'.$img.'"  class="lazy".$img.'" alt="PHP下载远程图片并保存到本地方法总结_PHP" >
';else:echo "false";endif;
//记录程序运行结束的时间
$EndTime=getmicrotime();
//返回运行时间
exit($EndTime-$BeginTime);

3.全文下载图片

if(!empty($saveremoteimg)) 
{ 
$body = stripslashes($body); 
$img_array = array(); 
preg_match_all("/(src|SRC)=[\"|'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))/isU",$body,$img_array); 
$img_array = array_unique($img_array[2]); 
set_time_limit(0); 
$imgUrl = $img_dir."/".strftime("%Y%m%d",time()); 
$imgPath = $base_dir.$imgUrl; 
$milliSecond = strftime("%H%M%S",time()); 
if(!is_dir($imgPath)) @mkdir($imgPath,0777); 
foreach($img_array as $key =>$value) 
{ 
$value = trim($value); 
$get_file = @file_get_contents($value); 
$rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3); 
$fileurl = $imgUrl."/".$milliSecond.$key.".".substr($value,-3,3); 
if($get_file) 
{ 
$fp = @fopen($rndFileName,"w"); 
@fwrite($fp,$get_file); 
@fclose($fp); 
} 
$body = ereg_replace($value,$fileurl,$body); 
} 
$body = addslashes($body); 
}

4.PHP远程文件下载类（支持断点续传）

1）.功能:支持断点续传的下载,能计算传输率,能控制传输率

简易使用方法:

$object = new httpdownload();
$object->set_byfile($file);//服务器文件名,包括路径
$object->filename = $filename;//下载另存为的文件名
$object->download();

类文件：

___FCKpd___4

5. php 使用GD库下载远程图片

<?php 
$imgname = "http://imgdujia.kuxun.cn/newpic/929/812929/4.jpg"; 
$src_im = imagecreatefromjpeg($imgname); 
$srcW = ImageSX($src_im); //获得图像的宽 
$srcH = ImageSY($src_im); //获得图像的高 
$dst_im = ImageCreateTrueColor($srcW,$srcH); //创建新的图像对象 
imagecopy($dst_im, $src_im, 0, 0, 0, 0, $srcW, $srcH); 
imagejpeg($dst_im, "newpic.jpg"); //创建缩略图文件 
echo "<img  src="/static/imghw/default1.png"  data-src="newpic.jpg"  class="lazy" mce_ alt="PHP下载远程图片并保存到本地方法总结_PHP" ></img>"; 
?>

<?php
header("Content-type: image/png");
$im = imagecreatefromjpeg("http://postimg.mop.com/200602/02/74/122374/200602022335325121.JPG");
$white = imagecolorallocate($im, 0xF9, 0xD7, 0xCD);
imagefill($im, 0, 0,$white);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, "A Simple Text String", $text_color);
imagepng($im);
imagedestroy($im);
?>

注意这个要把PHP分配内存调大，应用时用大内存服务器

SERVER['HTTP_RANGE']) || isset($HTTP_SERVER_VARS['HTTP_RANGE'])) { if (isset($HTTP_SERVER_VARS['HTTP_RANGE'])) $seek_range = substr($HTTP_SERVER_VARS['HTTP_RANGE'] , strlen('bytes=')); else $seek_range = substr(

1.获取远程文件大小及信息的函数

function getFileSize($url){ 
$url = parse_url($url); 
if($fp = @fsockopen($url['host'],empty($url['port'])?80:$url['port'],$error)){ 
fputs($fp,"GET ".(empty($url['path'])?'/':$url['path'])." HTTP/1.1\r\n"); 
fputs($fp,"Host:$url[host]\r\n\r\n"); 
while(!feof($fp)){ 
$tmp = fgets($fp); 
if(trim($tmp) == ''){ 
break; 
}else if(preg_match('/Content-Length:(.*)/si',$tmp,$arr)){ 
return trim($arr[1]); 
} 
} 
return null; 
}else{ 
return null; 
} 
} 
echo getFileSize(http://www.dianpub.com/download/xml.rar)

2.图片

//记录程序开始的时间
$BeginTime=getmicrotime();
function GrabImage($url,$filename="") { 
if($url==""):return false;endif; 
if($filename=="") { 
$ext=strrchr($url,"."); 
if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
$filename=date("dMYHis").$ext; 
} 
ob_start(); 
readfile($url); 
$img = ob_get_contents(); 
ob_end_clean(); 
$size = strlen($img); 
$fp2=@fopen($filename, "a"); 
fwrite($fp2,$img); 
fclose($fp2); 
return $filename; 
} 
$img=GrabImage("http://www.dianpub.com/images/_1978837_detector_ap100.jpg",""); 
if($img):echo '<pre class="brush:php;toolbar:false"><img  src="/static/imghw/default1.png"  data-src="'.$img.'"  class="lazy".$img.'" alt="PHP下载远程图片并保存到本地方法总结_PHP" >

';else:echo "false";endif; //记录程序运行结束的时间 $EndTime=getmicrotime(); //返回运行时间 exit($EndTime-$BeginTime);

3.全文下载图片

if(!empty($saveremoteimg)) 
{ 
$body = stripslashes($body); 
$img_array = array(); 
preg_match_all("/(src|SRC)=[\"|'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))/isU",$body,$img_array); 
$img_array = array_unique($img_array[2]); 
set_time_limit(0); 
$imgUrl = $img_dir."/".strftime("%Y%m%d",time()); 
$imgPath = $base_dir.$imgUrl; 
$milliSecond = strftime("%H%M%S",time()); 
if(!is_dir($imgPath)) @mkdir($imgPath,0777); 
foreach($img_array as $key =>$value) 
{ 
$value = trim($value); 
$get_file = @file_get_contents($value); 
$rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3); 
$fileurl = $imgUrl."/".$milliSecond.$key.".".substr($value,-3,3); 
if($get_file) 
{ 
$fp = @fopen($rndFileName,"w"); 
@fwrite($fp,$get_file); 
@fclose($fp); 
} 
$body = ereg_replace($value,$fileurl,$body); 
} 
$body = addslashes($body); 
}

4.PHP远程文件下载类（支持断点续传）

1）.功能:支持断点续传的下载,能计算传输率,能控制传输率

简易使用方法:

$object = new httpdownload();
$object->set_byfile($file);//服务器文件名,包括路径
$object->filename = $filename;//下载另存为的文件名
$object->download();

类文件：

___FCKpd___4

5. php 使用GD库下载远程图片

___FCKpd___5

注意这个要把PHP分配内存调大，应用时用大内存服务器

SERVER['HTTP_RANGE'] , strlen('bytes=')); $range = explode('-',$seek_range); if ($range[0] > 0) { $this->seek_start = intval($range[0]); } if ($range[1] > 0) $this->seek_end = intval($range[1]); else $this->seek_end = -1; if (!$this->use_resume) { $this->seek_start = 0; //header("HTTP/1.0 404 Bad Request"); //header("Status: 400 Bad Request"); //exit; //return false; } else { $this->data_section = 1; } } else { $this->seek_start = 0; $this->seek_end = -1; } $this->sentSize=0; return true; } function header($size,$seek_start=null,$seek_end=null) { header('Content-type: ' . $this->mime); header('Content-Disposition: attachment; filename="' . $this->filename . '"'); header('Last-Modified: ' . date('D, d M Y H:i:s \G\M\T' , $this->data_mod)); if ($this->data_section && $this->use_resume) { header("HTTP/1.0 206 Partial Content"); header("Status: 206 Partial Content"); header('Accept-Ranges: bytes'); header("Content-Range: bytes $seek_start-$seek_end/$size"); header("Content-Length: " . ($seek_end - $seek_start + 1)); } else { header("Content-Length: $size"); } } function download_ex($size) { if (!$this->initialize()) return false; ignore_user_abort(true); //Use seek end here if ($this->seek_start > ($size - 1)) $this->seek_start = 0; if ($this->seek_end <= 0) $this->seek_end = $size - 1; $this->header($size,$seek,$this->seek_end); $this->data_mod = time(); return true; } function download() { if (!$this->initialize()) return false; try { error_log("begin download\n", 3,"/usr/local/www/apache22/LOGS/apache22_php.err"); $seek = $this->seek_start; $speed = $this->speed; $bufsize = $this->bufsize; $packet = 1; //do some clean up @ob_end_clean(); $old_status = ignore_user_abort(true); @set_time_limit(0); $this->bandwidth = 0; $size = $this->data_len; if ($this->data_type == 0) //download from a file { $size = filesize($this->data); if ($seek > ($size - 1)) $seek = 0; if ($this->filename == null) $this->filename = basename($this->data); $res = fopen($this->data,'rb'); if ($seek) fseek($res , $seek); if ($this->seek_end < $seek) $this->seek_end = $size - 1; $this->header($size,$seek,$this->seek_end); //always use the last seek $size = $this->seek_end - $seek + 1; while (!(connection_aborted() || connection_status() == 1) && $size > 0) { if ($size < $bufsize) { echo fread($res , $size); $this->bandwidth += $size; $this->sentSize+=$size; } else { echo fread($res , $bufsize); $this->bandwidth += $bufsize; $this->sentSize+=$bufsize; } $size -= $bufsize; flush(); if ($speed > 0 && ($this->bandwidth > $speed*$packet*1024)) { sleep(1); $packet++; } } fclose($res); } elseif ($this->data_type == 1) //download from a string { if ($seek > ($size - 1)) $seek = 0; if ($this->seek_end < $seek) $this->seek_end = $this->data_len - 1; $this->data = substr($this->data , $seek , $this->seek_end - $seek + 1); if ($this->filename == null) $this->filename = time(); $size = strlen($this->data); $this->header($this->data_len,$seek,$this->seek_end); while (!connection_aborted() && $size > 0) { if ($size < $bufsize) { $this->bandwidth += $size; $this->sentSize+=$size; } else { $this->bandwidth += $bufsize; $this->sentSize+=$bufsize; } echo substr($this->data , 0 , $bufsize); $this->data = substr($this->data , $bufsize); $size -= $bufsize; flush(); if ($speed > 0 && ($this->bandwidth > $speed*$packet*1024)) { sleep(1); $packet++; } } } else if ($this->data_type == 2) { //just send a redirect header header('location: ' . $this->data); } if($this->totalsizeref==$this->sentSize )error_log("end download\n", 3,"/usr/local/www/apache22/LOGS/apache22_php.err"); else error_log("download is canceled\n", 3,"/usr/local/www/apache22/LOGS/apache22_php.err"); if ($this->use_autoexit) exit(); //restore old status ignore_user_abort($old_status); set_time_limit(ini_get("max_execution_time")); } catch(Exception $e) { error_log("cancel download\n".$e, 3,"/usr/local/www/apache22/LOGS/apache22_php.err"); } return true; } function set_byfile($dir) { if (is_readable($dir) && is_file($dir)) { $this->data_len = 0; $this->data = $dir; $this->data_type = 0; $this->data_mod = filemtime($dir); $this->totalsizeref = filesize($dir); return true; } else return false; } function set_bydata($data) { if ($data == '') return false; $this->data = $data; $this->data_len = strlen($data); $this->data_type = 1; $this->data_mod = time(); return true; } function set_byurl($data) { $this->data = $data; $this->data_len = 0; $this->data_type = 2; return true; } function set_lastmodtime($time) { $time = intval($time); if ($time <= 0) $time = time(); $this->data_mod = $time; } function _auth() { if (!isset(

1.获取远程文件大小及信息的函数

function getFileSize($url){ 
$url = parse_url($url); 
if($fp = @fsockopen($url['host'],empty($url['port'])?80:$url['port'],$error)){ 
fputs($fp,"GET ".(empty($url['path'])?'/':$url['path'])." HTTP/1.1\r\n"); 
fputs($fp,"Host:$url[host]\r\n\r\n"); 
while(!feof($fp)){ 
$tmp = fgets($fp); 
if(trim($tmp) == ''){ 
break; 
}else if(preg_match('/Content-Length:(.*)/si',$tmp,$arr)){ 
return trim($arr[1]); 
} 
} 
return null; 
}else{ 
return null; 
} 
} 
echo getFileSize(http://www.dianpub.com/download/xml.rar)

2.图片

//记录程序开始的时间
$BeginTime=getmicrotime();
function GrabImage($url,$filename="") { 
if($url==""):return false;endif; 
if($filename=="") { 
$ext=strrchr($url,"."); 
if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
$filename=date("dMYHis").$ext; 
} 
ob_start(); 
readfile($url); 
$img = ob_get_contents(); 
ob_end_clean(); 
$size = strlen($img); 
$fp2=@fopen($filename, "a"); 
fwrite($fp2,$img); 
fclose($fp2); 
return $filename; 
} 
$img=GrabImage("http://www.dianpub.com/images/_1978837_detector_ap100.jpg",""); 
if($img):echo '<pre class="brush:php;toolbar:false"><img  src="/static/imghw/default1.png"  data-src="'.$img.'"  class="lazy".$img.'" alt="PHP下载远程图片并保存到本地方法总结_PHP" >

';else:echo "false";endif; //记录程序运行结束的时间 $EndTime=getmicrotime(); //返回运行时间 exit($EndTime-$BeginTime);

3.全文下载图片

if(!empty($saveremoteimg)) 
{ 
$body = stripslashes($body); 
$img_array = array(); 
preg_match_all("/(src|SRC)=[\"|'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))/isU",$body,$img_array); 
$img_array = array_unique($img_array[2]); 
set_time_limit(0); 
$imgUrl = $img_dir."/".strftime("%Y%m%d",time()); 
$imgPath = $base_dir.$imgUrl; 
$milliSecond = strftime("%H%M%S",time()); 
if(!is_dir($imgPath)) @mkdir($imgPath,0777); 
foreach($img_array as $key =>$value) 
{ 
$value = trim($value); 
$get_file = @file_get_contents($value); 
$rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3); 
$fileurl = $imgUrl."/".$milliSecond.$key.".".substr($value,-3,3); 
if($get_file) 
{ 
$fp = @fopen($rndFileName,"w"); 
@fwrite($fp,$get_file); 
@fclose($fp); 
} 
$body = ereg_replace($value,$fileurl,$body); 
} 
$body = addslashes($body); 
}

4.PHP远程文件下载类（支持断点续传）

1）.功能:支持断点续传的下载,能计算传输率,能控制传输率

简易使用方法:

$object = new httpdownload();
$object->set_byfile($file);//服务器文件名,包括路径
$object->filename = $filename;//下载另存为的文件名
$object->download();

类文件：

___FCKpd___4

5. php 使用GD库下载远程图片

___FCKpd___5

注意这个要把PHP分配内存调大，应用时用大内存服务器

SERVER['PHP_AUTH_USER'])) return false; if (isset($this->handler['auth']) && function_exists($this->handler['auth'])) { return $this->handler['auth']('auth' ,

1.获取远程文件大小及信息的函数

function getFileSize($url){ 
$url = parse_url($url); 
if($fp = @fsockopen($url['host'],empty($url['port'])?80:$url['port'],$error)){ 
fputs($fp,"GET ".(empty($url['path'])?'/':$url['path'])." HTTP/1.1\r\n"); 
fputs($fp,"Host:$url[host]\r\n\r\n"); 
while(!feof($fp)){ 
$tmp = fgets($fp); 
if(trim($tmp) == ''){ 
break; 
}else if(preg_match('/Content-Length:(.*)/si',$tmp,$arr)){ 
return trim($arr[1]); 
} 
} 
return null; 
}else{ 
return null; 
} 
} 
echo getFileSize(http://www.dianpub.com/download/xml.rar)

2.图片

//记录程序开始的时间
$BeginTime=getmicrotime();
function GrabImage($url,$filename="") { 
if($url==""):return false;endif; 
if($filename=="") { 
$ext=strrchr($url,"."); 
if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
$filename=date("dMYHis").$ext; 
} 
ob_start(); 
readfile($url); 
$img = ob_get_contents(); 
ob_end_clean(); 
$size = strlen($img); 
$fp2=@fopen($filename, "a"); 
fwrite($fp2,$img); 
fclose($fp2); 
return $filename; 
} 
$img=GrabImage("http://www.dianpub.com/images/_1978837_detector_ap100.jpg",""); 
if($img):echo '<pre class="brush:php;toolbar:false"><img  src="/static/imghw/default1.png"  data-src="'.$img.'"  class="lazy".$img.'" alt="PHP下载远程图片并保存到本地方法总结_PHP" >

';else:echo "false";endif; //记录程序运行结束的时间 $EndTime=getmicrotime(); //返回运行时间 exit($EndTime-$BeginTime);

3.全文下载图片

if(!empty($saveremoteimg)) 
{ 
$body = stripslashes($body); 
$img_array = array(); 
preg_match_all("/(src|SRC)=[\"|'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))/isU",$body,$img_array); 
$img_array = array_unique($img_array[2]); 
set_time_limit(0); 
$imgUrl = $img_dir."/".strftime("%Y%m%d",time()); 
$imgPath = $base_dir.$imgUrl; 
$milliSecond = strftime("%H%M%S",time()); 
if(!is_dir($imgPath)) @mkdir($imgPath,0777); 
foreach($img_array as $key =>$value) 
{ 
$value = trim($value); 
$get_file = @file_get_contents($value); 
$rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3); 
$fileurl = $imgUrl."/".$milliSecond.$key.".".substr($value,-3,3); 
if($get_file) 
{ 
$fp = @fopen($rndFileName,"w"); 
@fwrite($fp,$get_file); 
@fclose($fp); 
} 
$body = ereg_replace($value,$fileurl,$body); 
} 
$body = addslashes($body); 
}

4.PHP远程文件下载类（支持断点续传）

1）.功能:支持断点续传的下载,能计算传输率,能控制传输率

简易使用方法:

$object = new httpdownload();
$object->set_byfile($file);//服务器文件名,包括路径
$object->filename = $filename;//下载另存为的文件名
$object->download();

类文件：

___FCKpd___4

5. php 使用GD库下载远程图片

___FCKpd___5

注意这个要把PHP分配内存调大，应用时用大内存服务器

SERVER['PHP_AUTH_USER'],

1.获取远程文件大小及信息的函数

function getFileSize($url){ 
$url = parse_url($url); 
if($fp = @fsockopen($url['host'],empty($url['port'])?80:$url['port'],$error)){ 
fputs($fp,"GET ".(empty($url['path'])?'/':$url['path'])." HTTP/1.1\r\n"); 
fputs($fp,"Host:$url[host]\r\n\r\n"); 
while(!feof($fp)){ 
$tmp = fgets($fp); 
if(trim($tmp) == ''){ 
break; 
}else if(preg_match('/Content-Length:(.*)/si',$tmp,$arr)){ 
return trim($arr[1]); 
} 
} 
return null; 
}else{ 
return null; 
} 
} 
echo getFileSize(http://www.dianpub.com/download/xml.rar)

2.图片

//记录程序开始的时间
$BeginTime=getmicrotime();
function GrabImage($url,$filename="") { 
if($url==""):return false;endif; 
if($filename=="") { 
$ext=strrchr($url,"."); 
if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
$filename=date("dMYHis").$ext; 
} 
ob_start(); 
readfile($url); 
$img = ob_get_contents(); 
ob_end_clean(); 
$size = strlen($img); 
$fp2=@fopen($filename, "a"); 
fwrite($fp2,$img); 
fclose($fp2); 
return $filename; 
} 
$img=GrabImage("http://www.dianpub.com/images/_1978837_detector_ap100.jpg",""); 
if($img):echo '<pre class="brush:php;toolbar:false"><img  src="/static/imghw/default1.png"  data-src="'.$img.'"  class="lazy".$img.'" alt="PHP下载远程图片并保存到本地方法总结_PHP" >

';else:echo "false";endif; //记录程序运行结束的时间 $EndTime=getmicrotime(); //返回运行时间 exit($EndTime-$BeginTime);

3.全文下载图片

if(!empty($saveremoteimg)) 
{ 
$body = stripslashes($body); 
$img_array = array(); 
preg_match_all("/(src|SRC)=[\"|'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))/isU",$body,$img_array); 
$img_array = array_unique($img_array[2]); 
set_time_limit(0); 
$imgUrl = $img_dir."/".strftime("%Y%m%d",time()); 
$imgPath = $base_dir.$imgUrl; 
$milliSecond = strftime("%H%M%S",time()); 
if(!is_dir($imgPath)) @mkdir($imgPath,0777); 
foreach($img_array as $key =>$value) 
{ 
$value = trim($value); 
$get_file = @file_get_contents($value); 
$rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3); 
$fileurl = $imgUrl."/".$milliSecond.$key.".".substr($value,-3,3); 
if($get_file) 
{ 
$fp = @fopen($rndFileName,"w"); 
@fwrite($fp,$get_file); 
@fclose($fp); 
} 
$body = ereg_replace($value,$fileurl,$body); 
} 
$body = addslashes($body); 
}

4.PHP远程文件下载类（支持断点续传）

1）.功能:支持断点续传的下载,能计算传输率,能控制传输率

简易使用方法:

$object = new httpdownload();
$object->set_byfile($file);//服务器文件名,包括路径
$object->filename = $filename;//下载另存为的文件名
$object->download();

类文件：

___FCKpd___4

5. php 使用GD库下载远程图片

___FCKpd___5

注意这个要把PHP分配内存调大，应用时用大内存服务器

SERVER['PHP_AUTH_PW']); } else return true; //you must use a handler } } ?>

5. php 使用GD库下载远程图片

___FCKpd___5

注意这个要把PHP分配内存调大，应用时用大内存服务器