(PHP 5 >= 5.2.0, PHP 7)
ReflectionFunctionAbstract::getFileName — Gets file name
public ReflectionFunctionAbstract::getFileName ( ) : string
Gets the file name from a user-defined function.
This function is currently not documented; only its argument list is available.
This function has no parameters.
The file name.
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https://www.php.net/manual/en/reflectionfunctionabstract.getfilename.php