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php数组转换js数组操作及json_encode应用

Jun 13, 2016 am 10:56 AM
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对于php,个人感觉能够熟练操作数组和字符串,基本上已经是入门了,php本身有很多操作数组和字符串的函数,
今天在做一个功能时,需要用Js动态的创建门店信息,这些信息是要从后台添加的,想来想去,通过php读取数据库
,得到数组,然后将数组转化成符合需求js数组,
php数组形式为:[php]
$newArray = array(array('地区'=>'北京地区','items'=>'10','detail'=>array(0=>array('店名'=>'旗舰店','url'=>'http://www.'),1=>array('店名'=>'jjjj','url'=>'http://www.fdd'))), 
                  array('地区'=>'上海地区','items'=>'11','detail'=>array(0=>array('店名'=>'旗舰店','url'=>'http://www.'),1=>array('店名'=>'jjjj','url'=>'http://www.fdd'))), 
                 ); 

$newArray = array(array('地区'=>'北京地区','items'=>'10','detail'=>array(0=>array('店名'=>'旗舰店','url'=>'http://www.'),1=>array('店名'=>'jjjj','url'=>'http://www.fdd'))),
                  array('地区'=>'上海地区','items'=>'11','detail'=>array(0=>array('店名'=>'旗舰店','url'=>'http://www.'),1=>array('店名'=>'jjjj','url'=>'http://www.fdd'))),
                 );
这里用的一个很方便的函数:json_encode();
   var jsarray = new Array();
    jsarray = ;
    用console.log();可以看到jsarray的结构。   

    在这里如何构造这样一个符合要求的php数组呢?(我用的是phpcms系统)


[php] 
$sql= 'select catid,catname,items from category where parentid=10'; 
$result = mysql_query($sql); 
while ($row = mysql_fetch_array($result)) { 
    $arrArea['地区'] = $row['catname']; 
    $arrArea['items'] = $row['items']; 
    unset($arrArea['detail']);//这一步很关键,要不得出的信息就会累加。  
    $sql2 = 'select title,url from news where catid='.$row['catid']; 
    $fendian = mysql_query($sql2); 
    while ($re=mysql_fetch_assoc($fendian)) { 
        $item['店名']=$re['title'];  
        $item['url']=$re['url'];    
        $arrArea['detail'][] = $item;    
    } 
    $newwarr[]=$arrArea; 
}     
var_dump($newwarr); 

    $sql= 'select catid,catname,items from category where parentid=10';
    $result = mysql_query($sql);
    while ($row = mysql_fetch_array($result)) {
     $arrArea['地区'] = $row['catname'];
     $arrArea['items'] = $row['items'];
     unset($arrArea['detail']);//这一步很关键,要不得出的信息就会累加。
     $sql2 = 'select title,url from news where catid='.$row['catid'];
     $fendian = mysql_query($sql2);
     while ($re=mysql_fetch_assoc($fendian)) {
      $item['店名']=$re['title'];
      $item['url']=$re['url'];  
      $arrArea['detail'][] = $item; 
     }
     $newwarr[]=$arrArea;
    }   
    var_dump($newwarr);
json_encode:对变量进行 JSON 编码,该函数只能接受 UTF-8编码的数据 .
相对应的还有json_decode,第二个参数为true,返回数组,执行相逆的过程。

 

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