<?php
function getImage($url,$save_dir='',$filename='',$type=1){
if(trim($url)==''){
return array('file_name'=>'',
'save_path'=>'',
'error'=>1);
    }
if(trim($save_dir)==''){
$save_dir='./';
    }
if(trim($filename)==''){//儲存檔名
$ext=strstr($url,'.');//strchr
if($ext!='.gif' && $ext!=
 
'.jpg'){
return array('file_name'=>'',
'save_path'=>'',
'error'=>3);
        }
$filename=time().$ext;
    }
if(0!==strrpos($save_dir,'/')){
$save_dir .= '/';
    }
//建立儲存目錄
if(!file_exists($save_dir) && !mkdir($save_dir,0777,true)){
return array('file_name'=>'',
'save_path'=>'',
'error'
 
=>5);
    }
//獲取遠端檔案所採用的方法
if($type){
$ch=curl_init();
$timeOut=5;
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_HEADER,0);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeOut);
$img=curl_exec($ch);
curl_close($ch);
    }else{
ob_start();
readfile(
 
$url);
$img=ob_get_contents();
ob_clean();
    }
//檔案大小
$fp2[email protected]fopen($save_dir.$filename,'a');
fwrite($fp2,$img);
fclose($fp2);
unset($img,$url);
return array('file_name'=>$filename,
'save_path'=>$save_dir,
'error'=>0);
}