PHP convert nested array to single array while concatenating keys?

Question

Here is an example array:

 $foo = array(
           \'employer\' => array(
                    \'name\' => \'Foobar Inc\',
                    \'phone\         


        

Answer 1

I think this 'trick' using is http_build_query is less of an eyesore w/out recursion (or at least letting php do it for you)

3 lines of code if your str_replace uses the url-encoded values for [ and ]

$string      = http_build_query($array);
$string      = urldecode($string);
$string      = str_replace(
                    array('[',']'),
                    array('_','') , 
                    $string
                );
parse_str($string, $flat_array);

$flat_array becomes :

array(7) {
  ["employer_name"]         =>"Foobar Inc"
  ["employer_phone"]        =>"555-555-5555"
  ["employee_name"]         =>"John Doe"
  ["employee_phone"]        =>"555-555-5556"
  ["employee_address_state"]=>"California"
  ["employee_address_zip"]  =>"90210"
  ["modified"]              =>"2009-12-01"
}