PHP DIR, FILE, FUNCTION, CLASS, METHOD, LINE, NAMESPACE
PHP has large number of predefined constants. This HOWTO will present the seven most important, most practical and most useful PHP Magic Constants.
FILE – The full path and filename of the file. DIR – The directory of the file. FUNCTION – The function name. CLASS – The class name. METHOD – The class method name. LINE – The current line number of the file. NAMESPACE – The name of the current namespace This is example PHP script with comments, which demonstrate howto use all previously mentioned PHP Magic Constants.