Phar Class decompressFiles() bad in PHP 7.4 and 8.x branches

Description

The following code:

...

<?php
$p = new Phar('/home/gearond/my.phar', FilesystemIterator::SKIP_DOTS | FilesystemIterator::UNIX_PATHS, 'my.phar');
$p['myfile.txt'] = 'four score and seven years ago our fathers.';
$p['myfile2.txt'] = 'four score and severn years ago our mothers.';
foreach ($p as $file) {
    var_dump($file->getFileName());
    var_dump($file->isCompressed());
    var_dump($file->isCompressed(Phar::BZ2));
    var_dump($file->isCompressed(Phar::GZ));
}
var_dump($p->getSupportedCompression() );
var_dump( $p->compressFiles(Phar::GZ) );
foreach ($p as $file) {
    var_dump($file->getFileName());
    var_dump($file->isCompressed());
    var_dump($file->isCompressed(Phar::BZ2));
    var_dump($file->isCompressed(Phar::GZ));
}
var_dump( $p->decompressFiles() );
foreach ($p as $file) {
    var_dump($file->getFileName());
    var_dump($file->isCompressed());
    var_dump($file->isCompressed(Phar::BZ2));
    var_dump($file->isCompressed(Phar::GZ));
}
var_dump( $p->extractTo("/home/gearond/Project/exploration", null, true) );
?>

Resulted in this output:

string(10) "myfile.txt"
bool(false)
bool(false)
bool(false)
string(11) "myfile2.txt"
bool(false)
bool(false)
bool(false)
array(1) {
  [0]=>
  string(2) "GZ"
}
NULL
string(10) "myfile.txt"
bool(true)
bool(false)
bool(true)
string(11) "myfile2.txt"
bool(true)
bool(false)
bool(true)
bool(true)
string(10) "myfile.txt"
bool(false)
bool(false)
bool(false)
string(11) "myfile2.txt"
bool(false)
bool(false)
bool(false)
bool(true)

gearond@gearond-XPS-15-9570:~/Project/exploration$ cat *.txt
K�/-R(N�/JUH�KQ(N-K-�S�LM,*VHL�WI��d��K�/-R(N�/JUH�KQ(N-K�S�LM,*VHL�Wɦ%�d��gearond@gearond-XPS-15-9570:~/Project/exploration$ 

But I expected this output instead:

string(10) "myfile.txt"
bool(false)
bool(false)
bool(false)
string(11) "myfile2.txt"
bool(false)
bool(false)
bool(false)
array(1) {
  [0]=>
  string(2) "GZ"
}
NULL
string(10) "myfile.txt"
bool(true)
bool(false)
bool(true)
string(11) "myfile2.txt"
bool(true)
bool(false)
bool(true)
bool(true)
string(10) "myfile.txt"
bool(false)
bool(false)
bool(false)
string(11) "myfile2.txt"
bool(false)
bool(false)
bool(false)
bool(true)
gearond@gearond-XPS-15-9570:~/Project/exploration$ cat *.txt
cat *.txt
four score and severn years ago our mothers.four score and seven years ago our fathers.gearond@gearond-XPS-15-9570:~/Project/exploration$


### PHP Version

php 8.1.2 and 7.4

### Operating System

ubuntu 20.04 and 22.04

Bắt đầu với bản tái hiện Phar::compressFiles() và Phar::decompressFiles() được cung cấp trên PHP 7.4 hoặc 8.x, sau đó lần theo phần triển khai Phar và các bài kiểm thử của nó. Công việc được xem là hoàn tất khi decompressFiles() để lại các tệp đã giải nén chứa văn bản gốc thay vì các byte đã nén.