Use zlib of php to compress and decompress swf files

I have previously written how to apply c # to compress and decompress swf files, decompress, compress, and read flash header file information. an open source link Library is required, and the application is not very convenient, but the application of php is different. php contains the link library of zlib, which can be directly applied to its coherence function, the following is an example of how to use c # to compress and decompress a swf file, to compress and read flash header file information, you need to apply an open-source link Library, which is not very convenient, but php is different. php contains the zlib link Library, you can directly apply the relevant functions. The following is an example of my compress and compress swf files:

// Failed to determine whether the swf file has been compressed. you can determine whether the first byte of the file is 'F' or 'C '.


Compress the swf file:

<? Php
// Configure //--------------------------------------------------------------------------------------------------
// File name
$ Filename = 'test.swf ';
// Open the file
$ Rs = fopen ($ filename, 'r ');
// Read the file data
$ Str = fread ($ rs, filesize ($ filename ));
// Set the swf header file
$ Head = substr ($ str, 1, 8 );
$ Head = 'C'. $ head;
// Obtain the swf file content
$ Body = substr ($ str, 8 );
// Compresses the file content. The maximum application compression level is 9.
$ Body = gzcompress ($ body, 9 );
// Merge the file header and content
$ Str = $ head. $ body;
// Close the read File Stream
Fclose ($ rs );
// Create a new file
$ Ws = fopen('create.swf ', 'w ');
// Write an object
Fwrite ($ ws, $ str );
// Keep closed files
Fclose ($ ws );
// Configure //----------------------------------------------------------------------------------------------------
?>
Decompress the swf file:

<? Php
// Configure //----------------------------------------------------------------------------------------------------
// File name
$ Filename = 'test.swf ';
// Open the file
$ Rs = fopen ($ filename, 'r ');
// Read the file data
$ Str = fread ($ rs, filesize ($ filename ));
// Set the swf header file
$ Head = substr ($ str, 1, 8 );
$ Head = 'F'. $ head;
// Obtain the swf file content
$ Body = substr ($ str, 8 );
// Decompress the file content
$ Body = gzuncompress ($ body );
// Merge the file header and content
$ Str = $ head. $ body;
// Close the read File Stream
Fclose ($ rs );
// Create a new file
$ Ws = fopen('create.swf ', 'w ');
// Write an object
Fwrite ($ ws, $ str );
// Keep closed files
Fclose ($ ws );
// Configure //----------------------------------------------------------------------------------------------------
?>

How is it? Is it very simple? What php gives us is not just a brief introduction...