<?php
/*
樣本：
$file = '/data/ad_files/5/5.swf';
$flash = new flash();
$flash = $flash->getswfinfo($file);
echo "
檔案的寬高是:".$flash["width"].":".$info["height"];
echo "
檔案版本是".$flash["version"];
echo "
檔案幀數量是".$flash["framecount"];
echo "
檔案畫面播放速率是".$flash["framerate"];
echo "
檔案背景顏色是".$flash["bgcolor"];
*/
class flash
{
//是否返回背景色
public $need_back_color = false ;
//是否返回版本
public $need_version = false ;
//是否返回畫面播放速率
public $need_framerate = false ;
//是否返回幀數量
public $need_framecount = false ; public function __construct()
{ } public function getswfinfo( $filename )
{
if ( file_exists($filename) ) {
//echo "檔案的修改時間:".date("m d y h:i:s.", filemtime($filename))."
";
} else {
//echo "目標檔案不存在!";
return array( "error" => $filename ) ;
} //開啟檔案
$rs = fopen($filename,"r");
//讀取檔案的資料
$str = fread( $rs , filesize( $filename ) ) ;
///
if($str[0] == "f")
{
//echo "
檔案已是解壓縮的檔案:";
} else {
$first = substr($str,0,8);
$last = substr($str,8);
//
$last = gzuncompress($last);
//
$str = $first . $last ;
$str[0] = "f";
//echo "
解壓縮後的檔案資訊:";
} $info = $this->getinfo( $str );
fclose ( $rs ) ;
return $info;
} private function mydecbin($str,$index)
{
$fbin = decbin(ord($str[$index]));
while(strlen($fbin)<8)$fbin="0".$fbin;
return $fbin;
} private function colorhex($data)
{
$tmp = dechex($data);
if ( strlen($tmp)<2 ) {
$tmp='0' . $tmp ;
}
return $tmp;
} private function getinfo( $str )
{
//換算成二進位
$fbin = $this->mydecbin( $str , 8 ) ;
//計算rec的單位長度
$slen = bindec( substr( $fbin , 0 , 5 ) );
//計算rec所在的位元組
$recsize = $slen * 4 + 5 ;
$recsize = ceil( $recsize / 8 ) ; //rec的二進位
$recbin = $fbin ;
for( $i = 9 ; $i < $recsize + 8 ; $i++ )
{
$recbin .= $this->mydecbin( $str ,$i );
} //rec資料
$rec = array();
for( $i = 0 ; $i < 4 ; $i++ )
{
$rec[] = bindec( substr( $recbin , 5 + $i * $slen , $slen ) ) / 20 ;
}
if ( $this->need_back_color ) {
//背景顏色
for( $i = $recsize + 12 ; $i < strlen ( $str ) ; $i ++ )
{
if ( ord( $str[$i] ) == 67 && ord( $str[$i+1] ) == 2 )
{
$bgcolor = $this->colorhex(ord($str[$i+2])).$this->colorhex(ord($str[$i+3])).$this->colorhex(ord($str[$i+4]));
break;
}
}
}
if ( $this->need_version ) {
//版本
$version = ord( $str[3] );
}
if ( $this->need_framerate ) {
//畫面播放速率
$framerate = ord( $str[$recsize + 8] ) / 256 + ord( $str[$recsize + 9] ) ;
} if ( $this->need_framecount ) {
//幀數量
$framecount = ord( $str[$recsize + 11] ) * 256 + ord( $str[$recsize + 10] );
}
return array ( "bgcolor" => $bgcolor ,
"version" => $version ,
"framerate" => $framerate ,
"framecount" => $framecount ,
'width'=>$rec[1],
'height'=>$rec[3]
);
}
} ?> |
