PHP array merge from unknown number of parameters

Question

I have an PHP array looking like this:

$array[\'my_data\'][\'value\'] = \'some value\';
$array[\'my_own_data\'][\'value\'] = \'another value\';
$array[\'diff         


        

Answer 1

// 1. your array should have different keys, otherwise it will have no effect
$array['my_data']['value1'] = 'some value';
$array['my_own_data']['value2'] = 'another value';
$array['different_data']['value3'] = 'another value';

$result = call_user_func_array('array_merge', $array);

will return

array(
  'value1' => 'some value', 
  'value2' => 'another value', 
  'value3' => 'another value', 
)

Otherwise, did you wanted something like this ?

array(
  'value' => array('some value', 'another value', 'another value')
)

Then you could do

$array['my_data']['value'] = 'some value';
$array['my_own_data']['value'] = 'another value';
$array['different_data']['value'] = 'another value';

$result = array();
// PHP <= 5.2
array_walk($array, create_function('&$item, $key, &$dest', '
    foreach ((array) $item as $subKey => $value) {
        if (!isset($dest[$subKey])) { $dest[$subKey] = array(); }
        $dest[$subKey][] = $value;
    }
'), & $result);
var_export($result);