How to Push Key-Value Pairs into Associative Arrays in PHP?

Pushing Values into Associative Arrays in PHP with Array Keys

Creating associative arrays can be a useful technique in programming, and PHP provides a method to both associate values with keys and push them into arrays.

To address a specific challenge faced by developers, let's consider the following code:

$GET = array();    
$key = 'one=1';
$rule = explode('=', $key);

The goal is to create an associative array where the key-value pairs are derived from the exploded values in $rule. The desired output would resemble:

print_r($GET);
/* output: $GET[one => 1, two => 2, ...] */

Solution

While array_push() is commonly used to add elements to an array, it cannot be applied directly to associative arrays. Instead, we employ the following syntax:

$arrayname[indexname] = $value;

In our example:

$GET[$rule[0]] = $rule[1];

This will effectively add the key-value pair to the $GET associative array.

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