Hello Readers,

PHP Magic Constants:

There are many magic constants are available in PHP, but some magic constants are most important used in php, like LINE_, _DIR_, _FILE ,__CLASS__, __FUNCTION__etc. These constants are case-sensitive.

Use of the magic constants are as follows:

1) __LINE__: This magic constant is used to indicate the current line number of the file.

2) _DIR_ :  This magic constant is used to indicate the current directory in which the file is present.

3) _FILE_ : This magic constant is used to indicate the full path of the file.

4) _CLASS_ : This magic constant returns the class name.

5) _FUNCTION_ : This magic constant returns the function name.

6) _METHOD_ : This magic constant returns the function name.

7) _NAMESPACE_ : This magic constant displays the namespace in which we are working.

  Example of the some magic constants are given below:

<?php

function const(){

echo __LINE__


echo __FILE__


echo __DIR__


echo  __FUNCTION__


echo  __METHOD__


}

const();

?>

Output:

3
C:\xampp\htdocs\PHP-css\master.php
C:\xampp\htdocs\PHP-css
const
const