PHP array merge / map of two arrays -

i have 2 arrays, 1 contains options, , second 1 contains default values.

the options arrays looks this:

$options = array(    "seriesa" => array(        "a1" => array(           "text" => "a1",           "value" => "a-001"         ),        "a2" => array(           "text" => "a2",           "value" => "a-002"         )     ),   "seriesb" => array(        "b1" => array(           "text" => "b2",           "value" => "b-001"         ),        "b2" => array(           "text" => "b2",           "value" => "b-002"         )     ), ); 

and have array contains default value, , looks this

$defaults= array(    "seriesa" => "a-002",    "seriesb" => "b-001", ); 

what end 1 array contains info, there way can map both arrays , 1 array this:

$options = array(    "seriesa" => array(        "a1" => array(           "text" => "a1",           "value" => "a-001",           "default" => false         ),        "a2" => array(           "text" => "a2",           "value" => "a-002",           "default" => true         )     ),   "seriesb" => array(        "b1" => array(           "text" => "b2",           "value" => "b-001",           "default" => true         ),        "b2" => array(           "text" => "b2",           "value" => "b-002",           "default" => false         )     ), ); 

here 2 ways it:

make function, accepts 2 args , check value in loop defaults, add defaults, , returns new array, or edit array, passing reference:

function awesomename(&$options, $defaults) {     foreach ($options $k => &$values) {         foreach ($values &$asandbs) {             $asandbs['default'] = $asandbs['value'] == $defaults[$k];         }     } } 

using array_walk() function anonymous function:

array_walk($options, function (&$v, $k) use ($defaults) {     $series = $k;     foreach ($v &$series_contents) {         $series_contents['default'] = $series_contents['value'] == $defaults[$series];     } });