(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL phar >= 1.0.0)
Phar::getMetadata — Returns phar archive meta-data
Retrieve archive meta-data. Meta-data can be any PHP variable that can be serialized.
    Accessing the meta-data will trigger deserialization, which can trigger
    the execution of arbitrary PHP code. Do not use this on untrusted phar
    archives, or configure the unserializeOptions
    in a secure manner.
   
No parameters.
   Any PHP value that can be serialized and is stored as meta-data for the Phar archive,
   or null if no meta-data is stored.
  
| 版本 | 说明 | 
|---|---|
| 8.0.0 | The parameter unserializeOptionshas been added. | 
示例 #1 A Phar::getMetadata() example
<?php
// make sure it doesn't exist
@unlink('brandnewphar.phar');
try {
    $p = new Phar(dirname(__FILE__) . '/brandnewphar.phar', 0, 'brandnewphar.phar');
    $p['file.php'] = '<?php echo "hello";';
    $p->setMetadata(array('bootstrap' => 'file.php'));
    var_dump($p->getMetadata());
} catch (Exception $e) {
    echo 'Could not modify phar:', $e;
}
?>以上示例会输出:
array(1) {
  ["bootstrap"]=>
  string(8) "file.php"
}
