I.T. Discussion Community!
-Collapse +Expand
PHP
Search PHP Group:

Advanced
-Collapse +Expand PHP Store
PRESTWOODSTORE

Prestwood eMagazine

February Edition
Subscribe now! It's Free!
Enter your email:

   ► KBWebsite Scri...PHPBeginners Co...   Print This     
  From the October 2015 Issue of Prestwood eMag
 
PHP Beginners Corner:
PHP Associative Array
 
Posted 11 years ago on 11/27/2008 and updated 1/28/2009
PHP Code Snippet:
 A flashcard from our PHP Flashcards Library
 A code snippet from our PHP Code Snippets Page

KB101660



General Info: Associative Array

A set of unique keys linked to a set of values. Each unique key is associated with a value. Think of it as a two column table. MyArray['CA'] = 'California' MyArray['AR'] = 'Arizona'

Languages Focus: Associative Array

Associative arrays are also known as a dictionary or a hash table in other languages.

PHP Associative Array

Declare associative array with initial known values. You can also add to associative array. (You can just assign values without ever declaring it too!)

Syntax Example:
$prices = array( 'Tires'=>100, 'Spark Plugs'=>4 );
$prices['Oil'] = 10;
 
echo "Tires=" . $prices['Tires'] . "<br>";
echo "Oil=" . $prices['Oil'] . "<br>";

About Associative Array
A set of unique keys linked to a set of values. Each unique key is associated with a value. Think of it as a two column table. MyArray['CA'] = 'California' MyArray['AR'] = 'Arizona'

Complete Example

Here is a complete example:

<html>
<head><title>PHP Hello World Example</title></head>
 
<body>
<?PHP
//Declare associative array with initial known values.
$prices = array( 'Tires'=>100, 'Spark Plugs'=>4 );
 
//Add to associative array. (You can just assign values without ever declaring it too!)
$prices['Oil'] = 10;
 
//Usage Example 1
echo "<br><br>Example 1<br>";
echo "Tires=" . $prices['Tires'] . "<br>";
echo "Oil=" . $prices['Oil'] . "<br>";
 
//Usage Example 2 - foreach loop with $key and $value
echo "<br><br>foreach loop<br>";
 
foreach ($prices as $key => $value)
 echo $key.'=>'.$value.'<br />';
//
//Clear it for another use.
//
echo "<br><br>reset example<br>";
reset($prices);
 
$prices['Computer'] = 700;
$prices['monitor'] = 200;
$prices['mouse'] = 15;
 
foreach ($prices as $key => $value)
  echo $key.'=>'.$value.'<br />';
?>
 
</body>
</html>

More Info

Definition:  Associative Array

Comments

0 Comments.
Share a thought or comment...
 
Write a Comment...
...
Sign in...

If you are a member, Sign In. Or, you can Create a Free account now.


Anonymous Post (text-only, no HTML):

Enter your name and security key.

Your Name:
Security key = P1215A1
Enter key:
Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

Visit Profile

 KB Article #101660 Counter
13908
Since 11/27/2008
-
   Contact Us!
 
PrestwoodBoards.com was developed and is maintainted by me. Do you have a question or suggestion? Do you see a problem? Contact me now. My goal is to build an ad-free and spam-free source of I.T. information with many contributers (ok to promote your website/company in your bio). Yes, my company Prestwood IT Solutions is mentioned in my bio which shows with every post, but you can contribute and promote your pet project too!

2,325 People Online Now!!  
Sign In to see who's online now!  Not a member? Join now. It's free!
Show more stats...


©1995-2019 PrestwoodBoards  [Security & Privacy]
Professional IT Services: Coding | Websites | Computer Tech