how to add key value in array php code example

Example 1: php array push with key

<?php
$a=array("a"=>"red","b"=>"green");
array_push($a,"blue","yellow");
print_r($a);
?>

Example 2: php add new item to associative array

$a = array('foo' => 'bar'); // when you create
$a['Title'] = 'blah'; // later

Example 3: php array push key value

<?php
$image[0] = $image[0].','.$filename;
?>