(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL phar >= 1.2.0)
Phar::isValidPharFilename — Returns whether the given filename is a valid phar filename
$filename, bool $executable = true): boolReturns whether the given filename is a valid phar filename that will be recognized as a phar archive by the phar extension. This can be used to test a name without having to instantiate a phar archive and catch the inevitable Exception that will be thrown if an invalid name is specified.
filenameThe name or full path to a phar archive not yet created
executableThis parameter determines whether the filename should be treated as a phar executable archive, or a data non-executable archive
Returns true if the filename is valid, false if not.