我需要一個幫助。我需要拒绝重复数据并使用 PHP 对 json 对象中存在的值进行排序。我在下面解释我的代码。
$res[]=array('member_name'=>$member,'no_of_members'=>$rowno['cnt'],'member_type'=>$countmemb);
$res的输出如下。
[
{member_name:"Medilink member",member_type:"1",no_of_members:"383"},
{member_name:"Medilink member",member_type:"1",no_of_members:"383"},
{member_name:"Medilink member",member_type:"1",no_of_members:"383"},
{member_name:"Non-Medilink Member",member_type:"2",no_of_members:"24"},
{member_name:"Non-Medilink Member",member_type:"2",no_of_members:"24"}
]
我需要拒绝上面的重复行，结果值格式应如下所示。
$res=[
{member_name:"Medilink member",member_type:"1",no_of_members:"383"},
{member_name:"Non-Medilink Member",member_type:"2",no_of_members:"24"}
]
我需要上面给出的结果。请帮助我解决此问题。
您需要
首先从多维数组中删除重复记录，然后才能使用 json_encode 获取 json 格式的结果
<?
// your array
$res[]=array('member_name'=>'Medilink member','no_of_members'=>1,'member_type'=>383);
$res[]=array('member_name'=>'Medilink member','no_of_members'=>1,'member_type'=>383);
$res[]=array('member_name'=>'Medilink member','no_of_members'=>1,'member_type'=>383);
$res[]=array('member_name'=>'Non-Medilink member','no_of_members'=>2,'member_type'=>24);
$res[]=array('member_name'=>'Non-Medilink member','no_of_members'=>2,'member_type'=>24);
// remove duplicates by using array_map and array_unique for multidimensional array
$duplicateRemoved = array_map("unserialize", array_unique(array_map("serialize", $res)));
// rearrange the array
$rearrangeArray = array_values($duplicateRemoved);
// encode the unique array into json format
$encodedData = json_encode($rearrangeArray);
// print result
echo $encodedData;
?>
查看array_unique。此内置函数会抛出所有重复的条目。
我将每行转换为字符串，例如：https://3v4l.org/LjBZS
// your array
$res[]=array('member_name'=>'Medilink member','no_of_members'=>1,'member_type'=>383);
$res[]=array('member_name'=>'Medilink member','no_of_members'=>1,'member_type'=>383);
$res[]=array('member_name'=>'Medilink member','no_of_members'=>1,'member_type'=>383);
$res[]=array('member_name'=>'Non-Medilink member','no_of_members'=>2,'member_type'=>24);
$res[]=array('member_name'=>'Non-Medilink member','no_of_members'=>2,'member_type'=>24);
$res = to_array_unique($res);
var_dump($res);exit;
function to_array_unique( $array ){
$tmp_array = array();
foreach( $array as $k => $v ){
$tmp_array[] = json_encode($v);
}
$tmp_array = array_unique($tmp_array);
$new_array = array();
foreach ($tmp_array as $k2 => $v2) {
$new_array[] = json_decode($v2);
}
return json_encode( $new_array );
}