PHP Variable Examples



Proper way to define variables.
<?php
	$var = 'Hello World';
	$_var1 = 100;
	$_12var = 'India';
	$Var = 'Welcome to this tutorial';
?>
Program to check local and global variables.
<?php
	$var1 = 12; 
	$var2 = 22;
	$var3 = 0;
	function getdata(){
		global $var1, $var2;
		$var3 = $var1 + $var2;
		echo $var3;
	}
	getdata();
?>
Reference variable example
<?php
	$var = 'Hello';
	$$var = 'Welcome';
	echo $Hello;
?>
Program to get type of variable
<?php
	$var = 'Hello World';
	$_var1 = 100;
	$_12var = 'India';
	$var2 = 10.883;
	echo gettype($var);
	echo '<br/>';
	echo gettype($_var1);
	echo '<br/>';
	echo gettype($_12var);
	echo '<br/>';
	echo gettype($var2);
?>


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