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PHP Associative Array

Associative Array performs same function as that of Indexed Array but unlike Indexed Array which uses Numeric Index, Associative Array uses a String Index for referring to an element of array. In PHP, if you want to create an associative array, you are required to use the => operator.

Associative Array can be specified in following two different ways

• With the use of array() construct
• With the use of array operator[]

Associative Array Using Array() Construct

Syntax

$arrayName=array(key1 => value1,key2=> value2,....);

Associative Array Using Array() Example

<?php $myInfo = array("Name"=> "Jimi","Class"=> "Seventh", "Age" => 11); echo "My Name is:".$myInfo["Name"]."and my age is:".myInfo["Age"]; ?>

This will produce following result

My Name is:Jimi and my age is:11

Associative Array Using Array operator[]

Syntax

$arrayName=array(); $arrayName[key1]=value1; $arrayName[key2]=value2; .....

Associative Array Using Array operator[] Example

<?php $myInfo=array(); $myInfo["Name"]="Jimi"; $myInfo["Class"]="Seventh"; $myInfo["Age"]=11; echo "My Name is:".$myInfo["Name"]."and my class is:".myInfo["Class"]; ?>

This will produce following result:

My Name is:Jimi and my class is:Seventh

Count Number of Elements in an Associative Array

In PHP Associative Array, array count can be done using count() function.

Count Number of Elements in an Associative Array Example

<?php $myInfo = array("Name"=> "Jimi","Class"=> "Seventh", "Age" => 11); echo count($myInfo); ?>

This will produce following result

3

Display elements in an Associative Array using Foreach

In PHP Associative Array, array elements can be display using Foreach.

Associative Array using Foreach Example

<?php $myInfo = array("Name"=> "Jimi","Class"=> "Seventh", "Age" => 11); foreach($myInfo $key=>$value){ echo $key."is".$value; echo "</br>"; ?>

This will produce following result

Name is Jimi Class is seventh Age is 11

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