Zend Certified PHP Engineer (ZCPE) Practice Test

The constant that provides the current working directory and the filename in PHP is __FILE__. When used within a script, __FILE__ returns the full path and filename of the file that contains the constant. This is particularly useful for scripts that need to know their own location in order to include other files, require resources, or handle dependencies.

For example, if you reference __FILE__ inside a PHP file called "example.php" located in "/var/www/html/", it would return the string "/var/www/html/example.php". This allows developers to create paths relative to the current file, which is especially helpful in modular PHP applications where script location can vary.

The other options do not serve this purpose. For instance, __FILE_PATH__ is not a predefined constant in PHP. The __ME__ constant is also not recognized, and __SCRIPT__ is not a standard PHP constant either; the closest to script information is the $_SERVER['SCRIPT_FILENAME'] variable, but it is not the same as __FILE__. Hence, __FILE__ distinctly stands out as the correct answer for obtaining the current working directory and file name.