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用php实现的获取网页中的图片并保存到本地的代码

WBOY
Release: 2016-06-13 12:19:55
Original
935 people have browsed it

复制代码 代码如下:


header("Content-type:image/jpeg");
function read_url($str)
{
$file=fopen($str,"r");
while(!feof($file))
{
$result.=fgets($file,9999);
}
fclose($file);
return $result;

}

function save_img($str)
{
$result=read_url($str);
$result=str_replace("\"","",$result);
$result=str_replace("\'","",$result);

preg_match_all('/用php实现的获取网页中的图片并保存到本地的代码|>)/i',$result,$matches);

foreach($matches[1] as $value)
{
echo $value."
\n";
//GrabImage($value,$filename="");
}
}

// $url 是远程图片的完整URL地址,不能为空。
// $filename 是可选变量: 如果为空,本地文件名将基于时间和日期
// 自动生成.

function GrabImage($url,$filename="") {
if($url==""):return false;endif;

$path="download/"; //指定存储文件夹

//若文件不存在,则创建;
if(!file_exists($path)){
mkdir($path);
}

if($filename=="") {
$ext=strrchr($url,".");
if($ext!=".gif" && $ext!=".jpg"):return false;endif;
$filename=$path.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;
}
save_img("http://www.jb51.net");
?>

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