I have a multidimensional array with original value and changed value like this:
$arr = [
    'first_name' => [
        'original' => 'Rahul',
        'changes' => 'Manan'
    ],
    'last_name' => [
        'original' => 'Shah',
        'changes' => 'Patel'
    ],
    'email_address' => [
        'original' => 'rahul@yahoo.com',
        'changes' => 'manan@gmail.com'
    ]
];
Now I want to concatenate a string with the main array key name along with original & changes value like this:
$str = 'first_name Rahul => Manan, last_name Shah => Patel, email_address rahul@yahoo.com => manan@gmail.com';
Any idea how to do this thing with loop?
 
    