javascript - 如果发现 json 文件发生更改，则发送短信

Question

我有这个 json 文件，我需要为其创建 cron 作业并在数据更改时接收短信通知 http://www.soyoustart.com/fr/js/dedicatedAvailability/availability-data.json

我需要查明某些服务器是否有库存，所以我找到了以下代码:

<?php

$cellphone = '15551234567';

$a_track = array('143sys12');

$s = file_get_contents('http://www.soyoustart.com/fr/js/dedicatedAvailability/availability-data.json');

$tmp = json_decode($s, true);
$a = $tmp ['availability'];

$data = array();

foreach ($a as $item) {
    if (!in_array($item ['reference'], $a_track)) {
        continue;
    }
    foreach ($item ['zones'] as $zone) {
        if ($zone ['availability'] == 'unavailable') {
            continue;
        }
        $data [$item ['reference']] .= $zone ['zone'];
    }
}

foreach ($data as $item => $availability) {
    $message = "SYS STOCK: $item: $availability";
    mail('my@email', 'OMG BUY THIS NOW!', $message);
    $url = "http://rest.nexmo.com/sms/json?api_key=xxxx&api_secret=yyyy&    from=nnnnnnnn&to=$cellphone&text=" . urlencode($message);
    $discard = file_get_contents($url);
}

问题是，当我触发它时，无论服务器是否有库存，我都会收到短信，并且短信不断出现误报。我也收到了这条消息:

]# /usr/bin/php /home/sys.php
PHP Notice:  Undefined index: 143sys12 in /home/sys.php on line 22

Answer 1

我稍微更改了您的代码，并将消息的发送移到了一个函数中，以便在找到引用时调用。

看一下:

<?php

$a_track = array('143sys12');

$s = file_get_contents('http://www.soyoustart.com/fr/js/dedicatedAvailability/availability-data.json');

$tmp = json_decode($s, true);

foreach ($tmp['availability'] as $item) {
    if (in_array($item['reference'],$a_track)) sendMeAnEmail($item);
}

function sendMeAnEmail($item){
    $cellphone = '15551234567';

    $message = "SYS STOCK: ". $item["reference"] . PHP_EOL;
    $gotStock = 0;

    foreach ($item["zones"] as $zone) 
        if ($zone["availability"] != "unavailable" and $zone['availability'] != 'unknown' ) {
            $message .= "Available in the " . $zone["zone"]. " zone,  with the " . $zone["availability"] . " status." ;
            $gotStock++;
        }

    $url = "http://rest.nexmo.com/sms/json?api_key=xxxx&api_secret=yyyy&from=nnnnnnnn&to=$cellphone&text=" . urlencode($message);

    if ($gotStock > 0) {
        print $message . PHP_EOL; // to check 
        mail('my@email', 'OMG BUY THIS NOW!', $message);
        $discard = file_get_contents($url);
        print "Got stock, sent mail and SMS" . PHP_EOL;
    }
}