format after parse the nginx log

url_unique.php

<?php
$str = file_get_contents('C:\Users\huanle0610.HL-PC\Desktop\hk.json');
$arr = json_decode($str, 1);
var_dump($arr['items'][0]);
$list =array();
foreach($arr['items'] as $row)
{
    $list[] = sprintf('%s %s %s', $row['method'], $row['url'], $row['protocol']);
}

$list = array_unique($list);
var_dump($list[100]);

foreach($list as $row)
{
    list($method, $url, $protocol) = explode(' ', $row);
    $list_all[] = array(
        'method' => $method,
        'url' => $url,
        'protocol' => $protocol
    );
}

$list = $list_all;
$urls['totalCount'] = count($list);
$urls['items'] = $list;
//var_dump($urls);
file_put_contents('hk2.json', json_encode($urls));