(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL phar >= 2.0.0)
Phar::isWritable — Returns true if the phar archive can be modified
This method returns true if phar.readonly is 0, and the actual phar archive on disk is not read-only.
true
phar.readonly
0
No parameters.
Returns true if the phar archive can be modified