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1 // Echo's notation 2 Echo "5 + ten ="  . " <br> "; 3 Echo "5+10 <br>"; 4 Echo "5+10 = {$a} <br>";

In PHP, there are three types of arrays:

• Indexed array-an array with a numeric index
• Associative array-An array with the specified key
• Multidimensional arrays-An array that contains one or more arrays

PHP indexed Array

There are two methods of creating an indexed array:

Indexes are automatically assigned (index starting from 0):

$cars=array("Volvo", "BMW", "SAAB");

Or you can manually assign an index:

1 $cars [0]= "Volvo"; 2 $cars [1]= "BMW"; 3 $cars [2]= "SAAB";

PHP Associative array

An associative array is an array that uses the specified key that you assign to the array.

There are two ways to create an associative array:

$age=array("Peter" and "+", "Ben" = "PNs", "Joe" = "43");

Or:

$age [' Peter ']= '; $age [' Ben ']= "Notoginseng"; $age [' Joe ']= ' 43 ';

Iterating through an indexed array

To iterate through and output all the values of an indexed array, you can use a for loop, like this:

Instance

<? PHP $cars=array("Volvo", "BMW", "SAAB"); $arrlength=count($cars);  for ($x= 0; $x<$arrlength; $x+ +)  {echo$cars[$x]  ; Echo "<br>";}? >

Traversing associative arrays

To traverse and output all the values of an associative array, you can use a foreach loop like this:

Instance

<? PHP $age=array("Bill" = "+", "Steve" = "Notoginseng", "Peter" and "+"); foreach ($ageas$x=$x _value) {  echo$x$x _value;   Echo "<br>";}? >

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