PHP read Flash file high-width frame background color method

This article illustrates how PHP reads the background color of the high-width frame of a flash file. Share to everyone for your reference.

The implementation methods are as follows:

The code is as follows:

/*

Example:

$file = '/data/ad_files/5/5.swf ';

$flash = new Flash ();

$flash = $flash->getswfinfo ($file);

echo "

The height of the file is: ". $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 a background color

Public $need _back_color = false;

Whether to return version

Public $need _version = false;

Whether to return the frame rate

Public $need _framerate = false;

Whether to return the number of frames

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 "Destination file does not exist!";

Return Array ("error" => $filename);

}

Open File

$rs = fopen ($filename, "R");

Reading data from a file

$str = Fread ($rs, FileSize ($filename));

///

if ($str [0] = = "F")

{

echo "

File is already uncompressed file: ";

} else {

$first = substr ($str, 0,8);

$last = substr ($STR, 8);

//

$last = gzuncompress ($last);

//

$str = $first. $last;

$str [0] = "f";

echo "

Unzip the 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;

}

Private Function GetInfo ($STR)

{

Converted into binary

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

Calculate the unit length of rec

$slen = Bindec (substr ($fbin, 0, 5));

Calculate the bytes in which the 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 Data

$rec = Array ();

for ($i = 0; $i < 4; $i + +)

{

$rec [] = Bindec (substr ($recbin, 5 + $i * $slen, $slen))/20;

}

if ($this->need_back_color) {

Background color

for ($i = $recsize + $i < strlen ($STR); $i + +)

{

if (Ord ($str [$i]) = = && 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) {

Version

$version = Ord ($str [3]);

}

if ($this->need_framerate) {

Frame rate

$framerate = Ord ($str [$recsize + 8])/256 + ord ($str [$recsize + 9]);

}

if ($this->need_framecount) {

Number of Frames

$framecount = Ord ($str [$recsize +]) * 256 + ord ($str [$recsize + 10]);

}

Return Array ("bgcolor" => $bgcolor,

"Version" => $version,

"Framerate" => $framerate,

"Framecount" => $framecount,

' Width ' => $rec [1],

' Height ' => $rec [3]

);

}

}

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