What is the best way to add a new key-value pair to an array in PHP?

To add a new key-value pair to an array in PHP, you can simply assign a value to a new key in the array using square brackets notation. This will create a new key-value pair in the array without affecting existing elements. 

// Create an array
$array = array('key1' => 'value1', 'key2' => 'value2');

// Add a new key-value pair
$array['key3'] = 'value3';

// Print the updated array
print_r($array);

Keywords

PHP array key-value pair manipulation function

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