PHP如何给这个数组里增加内容

$brandData = array(
array('id'=> 1,'value'=> 388, "name"=> "品牌1","type"=>"brand"),
array("id"=> 2,"value"=> 205, "name"=> "品牌2","type"=>"brand"),
array("id"=> 3,"value"=> 215, "name"=> "品牌3","type"=>"brand"),
);
页面上会传递brand的value值
我想根据传递过来的值给相应的数组增加下面这个内容
,"selected"=>1

    例如：
   array('id'=> 1,'value'=> 388, "name"=> "品牌1","type"=>"brand","selected"=>1),

参考：http://zhidao.baidu.com/link?url=D0FYbALAwipDpSrMcX3IiljIKupdb5WDcPglODhJho4JJuv99jYyYj7wu1IVin96fexdPeb4HDffyefCcxHg5a

$brandData[$value]['selected'] = 1;

arrar_push()不能增加指定键的元素。

我觉得是用IF判断，或者你在二维数组前面再加上个键值，然后就 $brandData[$value]['selected'] = 1;

 function addValue($arr，$val)
{
    foreach ($arr as $key=>$value){
        if($value['value']==$val){
              $arr[$key]['selected']=1;
            return $arr;
        }
        return $arr;
    }
}
$brandData = array(
array('id'=> 1,'value'=> 388, "name"=> "品牌1","type"=>"brand"),
array("id"=> 2,"value"=> 205, "name"=> "品牌2","type"=>"brand"),
array("id"=> 3,"value"=> 215, "name"=> "品牌3","type"=>"brand"),
);
$result=addValue($brandData,388);
print_r($result);

试试吧

function addValue($arr,$val){
foreach ($arr as $key=>$value){
if($value['value']==$val){
$value['selected']=1;
$arr[$key]=$value;
}
}
return $arr;
}
$brandData = array(
array('id'=> 1,'value'=> 388, "name"=> "品牌1","type"=>"brand"),
array("id"=> 2,"value"=> 205, "name"=> "品牌2","type"=>"brand"),
array("id"=> 3,"value"=> 215, "name"=> "品牌3","type"=>"brand"),
);
$result=addValue($brandData,388);
print_r($result);

array_push（）方法，你可以在网上搜一下用法。希望能够帮到你。