Question

我需要使用PHP对一些JSON结果进行分页，但是根据我的代码，它无法正常工作。我在下面解释我的代码。

<?php
$arr='[{"sku":"Pizza001","position":0,"category_id":"67"},{"sku":"Birthday Cake","position":0,"category_id":"67"},{"sku":"Birthday Cake-1","position":0,"category_id":"67"},{"sku":"Fruit cake","position":0,"category_id":"67"},{"sku":"Birthday Cake for Gift","position":0,"category_id":"67"}]';
$raw_data = json_decode($arr, true);
paginate($raw_data,1);
function paginate($data, $page = 2, $perPage = 2) {
   $x = ($page - 1) * $perPage;
   $z = $page * $perPage;
   $y = ($z > count($data)) ? count($data) : $z;
   for(; $x < $y; $x++) {
      print_r($data[$x]);
   }
}
?>

在这里，我总是从JSON对象获取第一个2 set o数据。我需要根据$page and $perPage进行数据过滤。假设$page=1 and $perPage=2，则将提取记录的前2组，如果$page=2 and $perPage=2，则将提取接下来的2组（i.e-from 2nd index），依此类推。请帮助我解决此问题。

Answer 1

我使用了array_slice的简单逻辑，正如Wenchoeng Young所建议的那样。

$i=0;
$page=5;
$perPage=1;

$arr='[
        {"sku":"Pizza001","position":0,"category_id":"67"},
        {"sku":"Birthday Cake","position":0,"category_id":"67"},
        {"sku":"Birthday Cake-1","position":0,"category_id":"67"},
        {"sku":"Fruit cake","position":0,"category_id":"67"},
        {"sku":"Birthday Cake for Gift","position":0,"category_id":"67"}
      ]';


$raw_data = json_decode($arr, true);

paginate($raw_data, $page, $perPage);

function paginate($data, $page, $perPage) 
{ print_r(array_slice($data, $page-1, $perPage)); }

Answer 2

使用动态变量作为页码，并限制每页的记录。单击页码后，它会自动更改结果。

<?php
$arr = '[{"sku":"Pizza001","position":0,"category_id":"67"},{"sku":"Birthday Cake","position":0,"category_id":"67"},{"sku":"Birthday Cake-1","position":0,"category_id":"67"},{"sku":"Fruit cake","position":0,"category_id":"67"},{"sku":"Birthday Cake for Gift","position":0,"category_id":"67"}]';
$raw_data = json_decode($arr, true);
paginate($raw_data, 1);
    function paginate($data, $page = $pageNumber, $perPage = $limit)
    {
        $x = ($page - 1) * $perPage;
        $z = $page * $perPage;
        $y = ($z > count($data)) ? count($data) : $z;
        for (; $x < $y; ++$x) {
            print_r($data[$x]);
        }
    }

如何使用PHP对JSON数据进行分页

2 个答案: