PHP array conversion js array operation and json_encode application_PHP tutorial

For PHP, I personally feel that I am proficient in operating arrays and strings. I am basically getting started. PHP itself has many functions for operating arrays and strings.
When working on a function today, I need to use JS to dynamically create store information. This information needs to be added from the background. After much deliberation, I read the database through php
, get the array, and then convert the array into a js array that meets the requirements,
The php array format is: [php]
$newArray = array(array('Region'=>'Beijing Area','items'=>'10','detail'=>array(0=>array('Store Name'=>'Flagship store','url'=>'http://www.'),1=>array('store name'=>'jjjj','url'=>'http://www.fdd' ))),
array('region'=>'Shanghai area','items'=>'11','detail'=>array(0=>array('store name'=>'flagship store','url '=>'http://www.'),1=>array('Store name'=>'jjjj','url'=>'http://www.fdd'))),
);

$newArray = array(array('region'=>'Beijing area','items'=>'10','detail'=>array(0=>array('store name'=> ;'Flagship store','url'=>'http://www.'),1=>array('Store name'=>'jjjj','url'=>'http://www .fdd'))),
array('region'=>'Shanghai area','items'=>'11','detail'=>array(0=>array('store name'=>'flagship store','url '=>'http://www.'),1=>array('Store name'=>'jjjj','url'=>'http://www.fdd'))),
);
A very convenient function used here: json_encode();
var jsarray = new Array();
jsarray = ;
Use console.log(); to see the structure of jsarray. 

How to construct such a php array that meets the requirements here? (I am using phpcms system)

[php]
$sql= 'select catid,catname,items from category where parentid=10';
$result = mysql_query($sql);
while ($row = mysql_fetch_array($result)) {
$arrArea['area'] = $row['catname'];
$arrArea['items'] = $row['items'];
Unset($arrArea['detail']);//This step is critical, otherwise the information obtained will be accumulated.
$sql2 = 'select title,url from news where catid='.$row['catid'];
$fendian = mysql_query($sql2);
While ($re=mysql_fetch_assoc($fendian)) {
         $item['store name']=$re['title'];
         $item['url']=$re['url'];                                                  $arrArea['detail'][] = $item;                                              }  
$newwarr[]=$arrArea;
} 
var_dump($newwarr);

$sql= 'select catid,catname,items from category parentid=10';
$result = mysql_query($sql);
While ($row = mysql_fetch_array($result)) {
$arrArea['area'] = $row['catname'];
$arrArea['items'] = $row['items'];
Unset($arrArea['detail']);//This step is critical, otherwise the information obtained will be accumulated.
$sql2 = 'select title,url from news where catid='.$row['catid'];
$fendian = mysql_query($sql2);
While ($re=mysql_fetch_assoc($fendian)) {
$item['store name']=$re['title'];
$item['url']=$re['url'];
$arrArea['detail'][] = $item;
}
$newwarr[]=$arrArea;
}  
var_dump($newwarr);
json_encode: JSON encodes variables. This function can only accept UTF-8 encoded data.
Correspondingly, there is json_decode. The second parameter is true, returns an array, and performs the reverse process.