PHP Classes

File: examples/demo.api.weather.file-storage.php

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File: examples/???
Role: Example script
Content type: text/plain
Description: Example script
Class: Forker PHP
Split tasks into multiple forked processes
Author: By
Last change: Update of examples/demo.api.weather.file-storage.php
Date: 1 month ago
Size: 1,551 bytes
 

Contents

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<?php
/**************************************************
 * Example: Retrieving the city-weather using external api
 * Usage : php examples/demo.api.weather.php
 * Storage: File
 **************************************************/
require 'vendor/autoload.php';

use Forker\Forker;
use Forker\Storage\FileStorage;

$allCitiesWeather = "";

$urlApiWeather = "http://api.openweathermap.org/data/2.5/weather?q=%s&mode=xml";

$myTasks = array(
    'madrid' => sprintf($urlApiWeather, 'Madrid'),
    'london' => sprintf($urlApiWeather, 'London'),
    'new-york' => sprintf($urlApiWeather, 'NewYork'),
    'barcelona' => sprintf($urlApiWeather, 'barcelona'),
    'lisboa' => sprintf($urlApiWeather, 'lisboa'),
    'iasi' => sprintf($urlApiWeather, 'iasi'),
);

// a way to keep our data
$storageSystem = new FileStorage;
$numberOfSubTasks = 6;

$forker = new Forker($storageSystem, $myTasks, $numberOfSubTasks);

$time_start = microtime(true);

$forker->fork(function($city, $url, $emit) {
    echo "Retrieving weather in $city\n";

    $contents = file_get_contents($url);
    $emit($city, $contents);
});

$allCitiesWeather = $forker->fetch();

$time_end = microtime(true);
$time = $time_end - $time_start;

echo "it took {$time} seconds in paralel \n";

$time_start = microtime(true);

foreach($myTasks as $city => $url) {
    echo 'Retrieving weather in ' . $city . "\n";
    $allCitiesWeather[] = file_get_contents($url);
}

$time_end = microtime(true);
$time = $time_end - $time_start;

echo "it took {$time} seconds secuencially \n";