An array is a data structure that store multiple values in single variable. In PHP to create an array, array() function is used.

<?php

$mobile = array("Samsung", "Nokia", "Micromax"); //$mobile is a single variable that contain many similar types of values.
echo "I like " . $mobile[0] . ", " . $mobile[1] . " and " . $mobile[2] . ".";
?>

  Output: 

I like Samsung, Nokia and Micromax.

 Basically array are of three types:

Indexed array:

These array can store numbers, object and strings but their index is represented by numbers. Default value of any index is 0.

<?php

$mobile = array("Samsung", "Nokia", "Micromax");
foreach($mobile as $k=>$v)
echo("$k:$v.</br>");
?>

  Output: 

0:Samsung.//default value is 0

1:Nokia.

2:Micromax.

Associative arrays:

 The associative array are similar to index array in terms of functionality but they are different in terms of key/index.

Note: These types of array are not kept inside double quotes else it will not return any value.

<?php

$salary = array("ragini"=>"35000", "Shikha"=>"40000", "Megha"=>"45000");
echo "Shikha salary is " . $salary['Shikha'];
?>

  Output: 

Shikha salary is 40000

 Multi-dimensional array

 A multi-dimensional array consist one or more arrays. Below is an example in which 3 students marks of three subject are stored in 2-dimensional array.

<?php

         $record = array(
            "Rakesh" => array (
               "Hindi" => 52,
               "English" => 34,  
               "History" => 33
            ),
            "salman" => array (
               "Hindi" => 39,
               "English" => 35,
               "History"=> 34
            ),
            "Shikha" => array (
               "Hindi" => 37,
               "English" => 29,
               "History" => 31
            )
         );
         /* Accessing multi-dimensional array values */
         echo "Marks for Rakesh in History : " ;
         echo $record['Rakesh']['History'] . "<br />";
         echo "Marks for salman in English : ";
         echo $record['salman']['English'] . "<br />";
         echo "Marks for Shikha in Hindi : " ;
         echo $record['Shikha']['Hindi'] . "<br />";
      ?>
 Output
Marks for Rakesh in History : 33
Marks for salman in English : 35
Marks for Shikha in Hindi : 37
  Modified On Mar-15-2018 05:10:46 AM

Leave Comment