array_push associative array code example
Example 1: php add to associative array
// for php 5.4+
$data += [$key => $value];
// for php 5.4-
$data += array($key => $value);
Example 2: php add to existing associative array
$a1=['aa'=>'123' , 'bb'=>'454'];
$a1 = array_merge( $a1 , ['a'=>1,'b'=>2] ) ;
Example 3: php add new item to associative array
$a = array('foo' => 'bar'); // when you create
$a['Title'] = 'blah'; // later