Using loops to iterate over array data is the easiest way to get at all of the data inside an array for evaluating, parsing, or display. When you loop you can access many key value pairs with just a few lines of code. You can conduct any type of operations on the key => value pairs inside of your loops.

This is how we loop over and display data from a simple value based or associative array:
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<?php

$cart_array = array("Milk", "Cheese", "Eggs", "Cereal", "Jelly"); // has key increment index of 0

// To force key incrementing to start at 1 use this line instead to build your array

//$cart_array = array(1 => "Milk", "Cheese", "Eggs", "Cereal", "Jelly"); // Force key incrementing to start at 1



$i = 0; // create a varible that will tell us how many items we looped over

foreach ($cart_array as $key => $value) {

$i++; // increment $i by one each loop pass

              echo "Cart Item $i ______ Key = $key | Value = $value<br />";

}



?>

This is how we loop over and display data from a multidimensional array:
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<?php

// create a multidimensional array that holds member details from our site

$members = array (

                  "member1"  => array ( 

                                       "name" => "John", 

                                       "zodiac" => "Scorpio", 

                                       "country" => "USA"

                                       ),

                  "member2"  => array (

                                       "name" => "Susan", 

                                       "zodiac" => "Virgo", 

                                       "country" => "Ireland"

                                       ),

                  "member3"  => array (

                                       "name" => "William",

                                       "zodiac" => "Pisces", 

                                       "country" => "Great Britain"

                                       ),

                  "member4"  => array (

                                       "name" => "Eduardo", 

                                       "zodiac" => "Leo", 

                                       "country" => "Mexico"

                                       )

                  );



$datasetCount = count($members); // returns count of array items of any array

echo "<h1>There are $datasetCount members</h1>";



$i = 0;

foreach ($members as $each_member) {

    $i++;

    echo "<h2>Member $i</h2>";

    while (list($key, $value) = each ($each_member)) {

                                       

        echo "$key: $value<br />";

        

    }



}



?>

There are 4 members

Member 1

Member 2

Member 3

Member 4

Array Functions Reference list

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There are 4 members

Member 1

Member 2

Member 3

Member 4