PHP reads flash file height, width, frame number, background color code_PHP tutorial

php tutorial to read flash file height, width, frame number, background color code

/*
Example:
$file = '/data/ad_files /5/5.swf';
$flash = new flash();
$flash = $flash->getswfinfo($file);
echo "
The width and height of the file are: ".$flash["width"].":".$info["height"];
echo "
The file version is".$flash["version"];
echo "
The number of file frames is ".$flash["framecount"];
echo "
The file frame rate is".$flash["framerate"];
echo "
The file background color is" .$flash["bgcolor"];
*/
class flash
{
// Whether to return the background color
public $need_back_color = false ;

// Whether Return version
public $need_version = false ;

//Whether to return frame rate
public $need_framerate = false ;

//Whether to return frame number
public $need_framecount = false ;

public function __construct()
{

}

public function getswfinfo( $filename )
{
if ( file_exists($ filename) ) {
//echo "File modification time:".date("m d y h:i:s.", filemtime($filename))."
";
} else {
             //echo "The target file does not exist!"; $filename,"r");

//Read file data

$str = fread( $rs, filesize( $filename ) ) ;

///
if( $str[0] == "f")
{
//echo "
The file is already a decompressed file:";
} else {
$first = substr($ str,0,8);
              $last = substr($str,8);                                                           first . $last ;
        $str[0] = "f";
         //echo "
Decompressed file information:";
   }

     $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; Into binary
$fbin = $this->mydecbin( $str, 8) ;

//Calculate the unit length of rec
$slen = bindec( substr( $fbin, 0, 5 ) );

//Calculate the byte where rec is located
$recsize = $slen * 4 + 5;
$recsize = ceil( $recsize / 8);

//rec binary

$recbin = $fbin ;

for( $i = 9 ; $i < $recsize + 8 ; $i++ )
{
$recbin .= $this- >mydecbin( $str ,$i );
}

    //rec数据
    $rec = array();
    for( $i = 0 ; $i < 4 ; $i++ )
    {
       $rec[] = bindec( substr( $recbin , 5 + $i * $slen , $slen ) ) / 20 ;
    }
   
    if ( $this->need_back_color ) {
      //背景颜色
      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 ) {
      //帧速率
      $framerate = ord( $str[$recsize + 8] ) / 256 + ord( $str[$recsize + 9] ) ;
    }

    if ( $this->need_framecount ) {   
      //帧数量
      $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]
            );
  }
}

?>

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