Question

I am looking for a php json pagination method/class. Here is my code. How to make each 2 json data as a group, for a pagination?

$body = file_get_contents("out_file.txt");
$json = json_decode($body,true);
foreach($json as $data){
    echo $data['name'].' '; 
}

out_file.txt

[
    {"name":"text1","num":"1"},
    {"name":"text2","num":"2"},
    {"name":"text3","num":"3"},
    {"name":"text4","num":"4"},
    {"name":"text5","num":"5"},
    {"name":"text6","num":"6"}
]

I need divide data like this:

page1

text1
text2

page2

text3
text4

page3

text5
text6

Answer 1

JSON data is not a “display” medium… it’s a data transfer format. How you do pageination of the data within the JSON body is up to you, but that’s true of ANY data structure, not just JSON. Given that your sample JSON structure is an array, you’d simply do some array indexing with your “page” offsets:

$page = 2;
$items_per_page = 2;

echo $json[$page * $items_per_page]['name'] // $json[4] -> text5
echo $json[$page * $items_per_page + 1]['name'] // $json[5] -> text6