A simple array

$number = array(1,2,3,4);

foreach ($number as $key => $value)
	{
		echo "Value is $value
";
	}

echo "
";

$num[0] = "One";
$num[1] = "Two";
$num[2] = "Three";
$num[3] = "Four";
$num[4] = "Five";
$num[5] = "Six";

foreach ($num as $key => $value)
{
	echo "$key... $value
";
}

Result

Value is 1
Value is 2
Value is 3
Value is 4

0... One
1... Two
2... Three
3... Four
4... Five
5... Six

$sal = array("A" => 5000, "B" => 4000, "C" => 3500);
echo $sal['A'];

5000

Two Dimensional Array

$marks = array
(
	"Satbir" => array
	(
		"Math" => 100,
		"Science" => 90,
		"Punjabi" => 95
	),

	"Kuldip" => array
	(
		"Math" => 90,
		"Science" => 40,
		"Punjabi" => 90
	),

	"Iqbal" => array
	(
		"Math" => 70,
		"Science" => 50,
		"Punjabi" => 60
	)
);

echo($marks['Satbir']['Math']);
var_dump($marks['Satbir']);	

100array(3) { ["Math"]=> int(100) ["Science"]=> int(90) ["Punjabi"]=> int(95) }