How can I execute a function, when admin changes the user role of a user?
I have two user roles: one is agent and the other one is client .
My need is that when admin changes the user role of client to agent, I need to execute a specific function.
In this function I need to get the all content and meta fields of user by getting the user id.
You can use the set_user_role hook, that will only fire when the user role changes:
add_action( 'set_user_role', function( $user_id, $role, $old_roles )
{
// Your code ...
}, 10, 3 );
If you want to restrict this to a profile update, you can use:
add_action( 'set_user_role', function( $user_id )
{
add_action( 'profile_update', function( $user_id )
{
// Your code here ...
} );
} );