In PHP, We have many features and pre-defined methods to represent our needs. This topic one of the most powerful and precisious element, which we frequently used in PHP.

Magic Methods.

Magic Constants.

Magic QUOTES (,

,) - This feature is REMOVED on PHP 5.4

Magic Methods :

Magic Constants :

__LINE__

The current line number of the file.

__FILE__

The full path and filename of the file. If used inside an include,

the name of the included file is returned.

Since PHP 4.0.2, __FILE__ always contains an

absolute path with symlinks resolved whereas in older versions it contained relative path

under some circumstances.

__DIR__

The directory of the file. If used inside an include,

the directory of the included file is returned. This is equivalent

to dirname(__FILE__). This directory name

does not have a trailing slash unless it is the root directory.

(Added in PHP 5.3.0.)

__FUNCTION__

The function name. (Added in PHP 4.3.0) As of PHP 5 this constant

returns the function name as it was declared (case-sensitive). In

PHP 4 its value is always lowercased.

__CLASS__

The class name. (Added in PHP 4.3.0) As of PHP 5 this constant

returns the class name as it was declared (case-sensitive). In PHP

4 its value is always lowercased. The class name includes the namespace

it was declared in (e.g. Foo\Bar).

Note that as of PHP 5.4 __CLASS__ works also in traits. When used

in a trait method, __CLASS__ is the name of the class the trait

is used in.

__TRAIT__

The trait name. (Added in PHP 5.4.0) As of PHP 5.4 this constant

returns the trait as it was declared (case-sensitive). The trait name includes the namespace

it was declared in (e.g. Foo\Bar).

__METHOD__

The class method name. (Added in PHP 5.0.0) The method name is

returned as it was declared (case-sensitive).

__NAMESPACE__

The name of the current namespace (case-sensitive). This constant

is defined in compile-time (Added in PHP 5.3.0).