改进后的《自动显示天气预报》小程序（Linux和Windows环境都可以_PHP

这次改进，主要是增加了图象的获取，并提供了一个比较完整的获取远端文件的函数。具体代码如下：

$fcont=file("http://www.bjmb.gov.cn/today.asp");
$arr=array();
for($i=0;$i     $tmp=$fcont[$i];
    $tmp=ereg_replace("
"," ",$tmp);
    if(!strstr(strtolower($tmp),"img")){
        $tmp=trim(strip_tags($tmp));
    } else {
        $st=ereg_replace(">⌒         $stt=split("⌒",$st);
        foreach($stt as $key => $value){
            if(strstr($value,"img") ){
                $tmp=$value;
                if(strstr($tmp,"bt9.jpg") || strstr($tmp,"colline.gif")){
                    $tmp="";
                }else{
                    $tmp=ereg_replace("\"","",$tmp);
                    $st=split("src=",$tmp);
                    $st1=split(" ",$st[1]);getpic("http://www.bjmb.gov.cn/$st1[0]","image");
                    if(count($st)>2){
                    $st2=split(" ",$st[2]);getpic("http://www.bjmb.gov.cn/$st1[0]","image");
                    }
                    $tmp=ereg_replace("src=","width=30 height=30 align=absmiddle src=",$tmp);
                }
            }
        }
    }
    if(trim($tmp)!="" && trim($tmp)!="　") $arr[]=$tmp;
}
$yb=array();
for($i=2;$i     $yb[]=$arr[$i];
}
?>




function getpic($url,$dir){
    $tmp=split("/",$url);
    $fname=$tmp[count($tmp)-1];
    if(strstr($dir,"\\")){
        if(substr($dir,-2)=="\\") $file=$dir.$fname;else $file=$dir."\\".$fname;
    }else{        
        if(substr($dir,"/")){
            if(substr($dir,-1)=="/") $file=$dir.$fname;else $file=$dir."/".$fname;
        }
        else{
            return ;
        }
    }
    if(!(file_exists("$dir") && is_dir("$dir"))) mkdir($dir,0777);
    if(file_exists($file)) return ;
    $fpo=fopen($file,"wb");
    if(!$fpo) return ;
    $num=0;
    do{
        $num++;
        $fpi=fopen($url,"r");
    }while(!$fpi && $num     if(!fpi)    return ;
    while(!feof($fpi)){
        $cont=fread($fpi,128);
        fwrite($fpo,$cont,128);
    }
    fclose($fpi);
    fclose($fpo);
}
?>