Two ways to merge two two-dimensional arrays into one two-dimensional array in PHP_PHP Tutorial

Title: There are the following 2 two-dimensional arrays

1
$a=Array(0 => Array(id => 66,class_name => www.iiwnet.com),1 => Array(id => 67,class_name => linux ));
2
$b=Array(0 => Array(class_count=> 8),1 => Array(class_count => 2));
The contents of the two arrays are as above. How to merge $a and $b into a new two-dimensional array? The content of the new array is required to be as follows:

1
Array(0 => Array(id => 66, class_name => www.iiwnet.com, class_count => 8), 1 => Array(id => 67, class_name => linux, class_count => 2));
Someone must have encountered this problem. Someone asked it in the group today and I gave two solutions
The following code is originally provided by PHP Tutorial Network
01
Method 1:
02

03
Function arrpreg(){
04
$a=Array(0 => Array(id => 66,class_name => www.iiwnet.com),1 => Array(id => 67,class_name => linux ));
05
           $b=Array(0 => Array(class_count=> 8),1 => Array(class_count => 2));
06
          $arr = array();
07
foreach ($a as $k => $r) {
08
foreach($r as $k1 => $r1){
09
                   $arr[$k][$k1] = $r1;
10
            }
11
                                                 12
foreach ($b as $k => $r) {
13
foreach($r as $k1 => $r1){
14
                   $arr[$k][$k1] = $r1;
15
            }
16
}
17
         return $arr;
18
}
19
$ar= arrpreg();
20
echo '

';<br>
21<br>
Print_r($ar);<br>
22<br>
echo '

';<br>
34<br>
Print_r($arr);<br>
35<br>
echo '