PHP:Magic Constant

PHP Magic Constant

There are a number of predefined constants available to your scripts. We will use these constants as we need them; there's a sample:

PHP: Magic Constant

PHP Magic Constant
__LINE__	The current line number of the file.
__FILE__	The full path and filename of the file.
__FUNCTION__	The function name
__CLASS__	The class name
__METHOD__	The class method name
PHP_VERSION	The PHP version
PHP_INT_MAX	The PHP integer value limit

LINE

The current line number of the file.

<?php

echo "The Line number : ". __LINE__;

?>

Output The Line number : 2

FILE

The full path and filename of the file.

<?php

echo  "Your file name :". __FILE__;

?>

Output Your file name : C:xampplitehtdocsmagic_constantfile.php

FUNCTION, CLASS, METHOD

The function name The class name The class method name

<?php

class demo

{

function test()

{

echo "Function of demo class : ". __FUNCTION__ ."<br/>";

}

function testme()

{

echo "Method of demo class : ". __METHOD__ ."<br/>";

echo "Class : ". __CLASS__;
				
}

}

$object=new demo();

$object->test();

$object->testme();

?>

Output Function of demo class : test Method of demo class : demo::testme Class : demo

PHP_VERSION

The PHP version

<?php

echo "Current PHP Version you are using  : ".PHP_VERSION;

?>

Output Current PHP Version you are using : 5.3.1

PHP_INT_MAX

The PHP integer value limit

<?php

echo "Integer Maximum Value : ".PHP_INT_MAX;

?>

Output Integer Maximum Value : 2147483647

« Previous Next »

PHP Tutorial PHP Introduction For Beginners PHP Advantage PHP Software Requirement PHP WAMP Installation PHP XAMPP Installation PHP Syntax PHP Comments PHP Variables PHP $ and $$ Variables PHP Super global variables How to swap two numbers in PHP PHP Constant PHP:Magic Constant echo and print in PHP PHP Data Types PHP Form GET Method POST Method Form action PHP Display result in Textbox Multiple submit buttons php different actions Add two textbox values and display the result in third textbox PHP Operators PHP Arithmetic Operators PHP Assignment Operators PHP Comparative Operators PHP Logical Operators PHP Operators Precedence PHP Conditional Statement PHP if Statement PHP if-else Statement PHP if elseif else Statement PHP Switch Statement PHP calculator Profit and Loss What is Loop PHP For Loop Print star pattern in PHP Create table using for loop in PHP PHP While Loop PHP Do While Loop PHP Foreach Loop PHP String PHP Numeric Functions PHP Tutorial PDF For Beginners PHP isset function

PHP Interview Question

PHP Projects

PHP String Functions

PHP Math/Number Functions

No Sidebar ads

PHP:Magic Constant