PHP Assistance with empty() in a loop -

let's wanted check see if variable empty , something... can this:

if ( empty($phone) ) { $phone = 'not provided'; } 

but want bunch of items. i'm thinking array , loop, this:

$optionalfieldsarray = array($phone, $address, $city, $state, $zip);  foreach ($optionalfieldsarray $value) {         //what goes here????     } 

is foreach resonable way it, check if $phone, $address, $city, etc. empty , assign "not provided" string when is?

if so, can me syntax goes inside loop?

you can this:

<?php  $required_vars = array( 'phone', 'address', 'city', 'state', 'zip' ); foreach( $required_vars $required_var ) {     if( empty( $$required_var ) )          $$required_var = 'not provided'; // $$var -> variable name = value of $var  }  ?> 

check above code yourself. can understand how works. because confusing concept.