function getimage($url, $filename = ) {if ($url == ) {return false;}if ($filename == ) {$ext = strrchr ( $url, . );if ($ext != .gif && $ext != .jpg) {return false;}$filename = time () . $ext;}//文件 保存路径
ob_start ();readfile ( $url );$img = ob_get_contents ();ob_end_clean ();$size = strlen ( $img );//文件大小
$fp2 = @fopen ( $filename, a );fwrite ( $fp2, $img );fclose ( $fp2 );return $filename;}getimage ( http://xxxxx );
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