展平多维数组无法正常工作

Question

I have two arrays like the following.

$alerts_array=array(1) {
          [0]=> array(11) {
                           ["CustomAlertsID"]=> int(3) 
                           ["CustomAlerts_Name"]=> string(10) "title demo" 
                           ["CustomAlerts_PublishDate"]=> string(10) "2016-07-03" 
                           ["CustomAlerts_ExpiryDate"]=> string(10) "2016-07-21"
                          }
            }
  $singlebtn_array  =array(3) {
       ["button_text0"]=> string(16) "Button Name1only"
       ["button_text1"]=> string(12) "button name2" 
       ["button_text2"]=> string(16) "button name3_new" 
     } 

I have merged the two arrays into a single multidimensional array which looks like following

$alerts_array = array_merge($alerts_array,$singlebtn_array);

array(4) { [0]=> array(11) 
               { ["CustomAlertsID"]=> int(3)
                 ["CustomAlerts_Name"]=> string(10) "title demo"   
                 ["CustomAlerts_PublishDate"]=> string(10) "2016-07-03" 
                 ["CustomAlerts_ExpiryDate"]=> string(10) "2016-07-21" 
               } 

           [1]=> array(1) 
                 { ["button_text0"]=> string(16) "Button Name1only" }
           [2]=> array(1) 
                 { ["button_text1"]=> string(12) "button name2" } 
           [3]=> array(1) { ["button_text2"]=> string(16) "button name3_new" } }

I need both keys and values in the new flattened array

I need it like this:

array(4) { [0]=> array(11) 
  { ["CustomAlertsID"]=> int(3)
    ["CustomAlerts_Name"]=> string(10) "title demo"   
    ["CustomAlerts_PublishDate"]=> string(10) "2016-07-03" 
    ["CustomAlerts_ExpiryDate"]=> string(10) "2016-07-21"  
    ["button_text0"]=> string(16) "Button Name1only"
    ["button_text1"]=> string(12) "button name2" 
    ["button_text2"]=> string(16) "button name3_new" }}

I have usedthe following code for combining.

 $newArr = array();
 foreach ($alerts_array as $key=>$tmp) {
    $newArr = array_merge($newArr, array_values($tmp));
 }

The $newArr is giving me the result ,but keys are lost

Answer 1

Simply merge the first key [0] of your $alerts_array, like this:

$alerts_array = array_merge($alerts_array[0], $singlebtn_array);

That will output:

array(7) {
  ["CustomAlertsID"]=>
  int(3)
  ["CustomAlerts_Name"]=>
  string(10) "title demo"
  ["CustomAlerts_PublishDate"]=>
  string(10) "2016-07-03"
  ["CustomAlerts_ExpiryDate"]=>
  string(10) "2016-07-21"
  ["button_text0"]=>
  string(16) "Button Name1only"
  ["button_text1"]=>
  string(12) "button name2"
  ["button_text2"]=>
  string(16) "button name3_new"
}

Also see the working demo here.