Array

The JSON Format Explained

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The JSON format is a very popular format for exchanging data. It is very easy to use. Find out, how to use the JSON format. What is JSON? JSON stands for JavaScript Object Notation. The format is identical to the way, you would create objects in JavaScript. It is a great way to exchange data … Read more

PHP: Convert An Array To JSON

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Sometimes, when programming in PHP, you’ll need to convert an array to JSON. This enables you e.g. to retrieve data serverside through PHP and pass it to the client, which then can process this data with javascript. There are different ways to do that, e.g. via AJAX.
In this article I’ll show you, how easy it is to convert a PHP array into a JSON String.

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JavaScript: Get A Random Item From An Array

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In one of my previous posts I’ve shown you how to get a random item from an array in PHP. Well, there is, of course, a way to do this in JavaScript as well. And it’s also very easy. Just declare someting like this:

<script>
var allItems = ['A', 'B', 'C', 1, 2, 3, 4, 5];
</script>

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PHP: Output An Associative Array

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In this article I’ll show you, how to output each element of an an assciative array in PHP. First of all, we need an associative array. In this example I’ll use an array with colors as the key and the corresponding HEX-code of this color as the value.

Let’s start! Here is the associative PHP array:

// Our associative array
$arrMembers = array(
	'Red'=>'ff0000',
	'Green'=>'00ff00',
	'Blue'=>'0000ff',
	'Yellow'=>'ffff00'
);

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PHP: Get A Random Item From An Array

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In PHP it’s easy to work with arrays. Just declare someting like this:

<?php
$arrX = array("Kay", "Joe","Susan", "Frank");
?>

Now you can access the values with their index (which starts a 0 for the first item).

<?php
// output "Kay"
echo $arrX[0];
 
// output "Susan"
echo $arrX[2];
?>

PHP offers you several ways to get a random value of the array. One simple way is by using the array_rand() function. array_rand() expects the array as a parameter and returns a random index value as integer which then can be used to get the array value.

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