Rasoul Vatanparast rasoulvatanparast

## sum of two num p1.php
<?php
$x=5;
$y=7;

$sum=$x+$y;
echo $sum;
?>

## sum of two num p2.php
<?php
$x=5;
$y=7;

echo $x+$y;
?>

## exam1.php
<?php

	$xVar = 10;

	function test(){
		echo $xVar;
	}

	echo $xVar;

## exam2.php
<?php

	$xVar = 10;

	function test(){
		echo $xVar;
	}

	echo $xVar;
	test();

## exam3.php
<?php

$x = 10;

function test(){
	echo $GLOBALS['x'];
}

test();

## c.php
<?php

function test(){
	$x = 10;
	echo $x;
}

test();
echo $x;

## d.php
<?php

function test(){
	$x = 10;
	echo '<p>' . $x . "</p>\n";
}

function test2(){
	$x = 5;
	echo '<p>' . $x . "</p>\n";

## e.php
<?php

$x = 10;

function test(){

	global $x;
	echo $x;
}

## f.php
<?php

$x = 10;
$y = 15;

function test(){

	global $x, $y;
	$x = $x * $y;
}

## global.php
<?php

$x = 10;
$y = 15;

function test(){

	$GLOBALS['x'] = $GLOBALS['x'] + $GLOBALS['y'];
}
	<?php

	$xVar = 10;

	function test(){
	echo $xVar;
	}

	echo $xVar;
	test();
	<?php

	function test(){
	$x = 10;
	echo '<p>' . $x . "</p>\n";
	}

	function test2(){
	$x = 5;
	echo '<p>' . $x . "</p>\n";
	<?php

	$x = 10;
	$y = 15;

	function test(){

	global $x, $y;
	$x = $x * $y;
	}