php实用获取远程图片的通用方法

function auto_save_image($body){
	$img_array = explode('&',$body);
	/*$img_array = array();
	preg_match_all("/(src)=[\"|\'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))[\"|\'| ]{0,}/isU", $body, $img_array);
	$img_array = array_unique($img_array[2]);*/ //也可以自动匹配
	set_time_limit(0);
	$imgPath = "uploads/allimg/".date("Ymd")."/";
	$milliSecond = strftime("%H%M%S",time());
	if(!is_dir($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);
			if($get_file)
			{
					$fp = @fopen($rndFileName,"w");
					@fwrite($fp,$get_file);
					@fclose($fp);
			}
			$body = @ereg_replace($value, $rndFileName, $body);
	}
	return $body;
}

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