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PHP

Weather.com XML-to-JSON script

<?php

/* 
* weatherfeed.php - Converts weather.com xml feeds to JSON

Call it like this: 
	<script type="text/javascript" src="weatherfeed.php?z=14450"></script>

You can also specify a callback function with the callback query param:
	<script type="text/javascript" src="weatherfeed.php?z=14450&callback=my_callback"></script>

In order to disconnect this script from weather.com's servers refresh.php must be 
run as a cron job to update the weather feeds.  This script will connects to weather.com's 
servers if the zipcode doesn't already have a file in the cache folder.

*/

// we need a zip, or this whole exercise is shite.
if (!$_GET['z']) exit;

//** If not...we make a cache & double-check our vars so we don't get effed
// these variable checking functions need error-checking! Exiting on error is not useful!
if(!preg_match('/^\d{5}$/', $_GET['z'])) { echo 'bad zip (not 5 digits)'; exit; }

//** identify cache file
$CACHE_FOLDER = 'cache/'; // Apache must have read/write permission for this folder
$json_cache = $CACHE_FOLDER . $_GET['z'];

//** If cache exists, we're all good
if(file_exists($json_cache)) { 
	$json = implode('',file($json_cache));
} else {
	// Fetch and process the weather feed
	require_once('lib/weathercom.php');
	$weather_feed = new weathercom_feed($_GET['z']);

	$json = "var weather_json = " . $weather_feed->parseCurrentWeather();
	$json .= "\nvar forecast_json = " . $weather_feed->parseForecast();
	
	// Write cache file
	$fp = fopen($json_cache, 'w');
	fwrite($fp, $json);
	fclose($fp);
}

// echo out the json so the web site can have it's precious data!
header("Cache-Control: maxage=300"); // HTTP/1.1
header('Content-type: application/javascript');
echo $json;
https://snipt.net/embed/62307e0a31b0ced2f0f5dd493c657052/
/raw/62307e0a31b0ced2f0f5dd493c657052/
62307e0a31b0ced2f0f5dd493c657052
php
PHP
49
2019-07-16T10:14:54
True
False
False
/api/public/snipt/3452/
weathercom-xml-to-json-script
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a> <a href="#L-24">24</a> <a href="#L-25">25</a> <a href="#L-26">26</a> <a href="#L-27">27</a> <a href="#L-28">28</a> <a href="#L-29">29</a> <a href="#L-30">30</a> <a href="#L-31">31</a> <a href="#L-32">32</a> <a href="#L-33">33</a> <a href="#L-34">34</a> <a href="#L-35">35</a> <a href="#L-36">36</a> <a href="#L-37">37</a> <a href="#L-38">38</a> <a href="#L-39">39</a> <a href="#L-40">40</a> <a href="#L-41">41</a> <a href="#L-42">42</a> <a href="#L-43">43</a> <a href="#L-44">44</a> <a href="#L-45">45</a> <a href="#L-46">46</a> <a href="#L-47">47</a> <a href="#L-48">48</a> <a href="#L-49">49</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cp">&lt;?php</span> </span><span id="L-2"><a name="L-2"></a> </span><span id="L-3"><a name="L-3"></a><span class="cm">/* </span> </span><span id="L-4"><a name="L-4"></a><span class="cm">* weatherfeed.php - Converts weather.com xml feeds to JSON</span> </span><span id="L-5"><a name="L-5"></a> </span><span id="L-6"><a name="L-6"></a><span class="cm">Call it like this: </span> </span><span id="L-7"><a name="L-7"></a><span class="cm"> &lt;script type=&quot;text/javascript&quot; src=&quot;weatherfeed.php?z=14450&quot;&gt;&lt;/script&gt;</span> </span><span id="L-8"><a name="L-8"></a> </span><span id="L-9"><a name="L-9"></a><span class="cm">You can also specify a callback function with the callback query param:</span> </span><span id="L-10"><a name="L-10"></a><span class="cm"> &lt;script type=&quot;text/javascript&quot; src=&quot;weatherfeed.php?z=14450&amp;callback=my_callback&quot;&gt;&lt;/script&gt;</span> </span><span id="L-11"><a name="L-11"></a> </span><span id="L-12"><a name="L-12"></a><span class="cm">In order to disconnect this script from weather.com&#39;s servers refresh.php must be </span> </span><span id="L-13"><a name="L-13"></a><span class="cm">run as a cron job to update the weather feeds. This script will connects to weather.com&#39;s </span> </span><span id="L-14"><a name="L-14"></a><span class="cm">servers if the zipcode doesn&#39;t already have a file in the cache folder.</span> </span><span id="L-15"><a name="L-15"></a> </span><span id="L-16"><a name="L-16"></a><span class="cm">*/</span> </span><span id="L-17"><a name="L-17"></a> </span><span id="L-18"><a name="L-18"></a><span class="c1">// we need a zip, or this whole exercise is shite.</span> </span><span id="L-19"><a name="L-19"></a><span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nv">$_GET</span><span class="p">[</span><span class="s1">&#39;z&#39;</span><span class="p">])</span> <span class="k">exit</span><span class="p">;</span> </span><span id="L-20"><a name="L-20"></a> </span><span id="L-21"><a name="L-21"></a><span class="c1">//** If not...we make a cache &amp; double-check our vars so we don&#39;t get effed</span> </span><span id="L-22"><a name="L-22"></a><span class="c1">// these variable checking functions need error-checking! Exiting on error is not useful!</span> </span><span id="L-23"><a name="L-23"></a><span class="k">if</span><span class="p">(</span><span class="o">!</span><span class="nb">preg_match</span><span class="p">(</span><span class="s1">&#39;/^\d{5}$/&#39;</span><span class="p">,</span> <span class="nv">$_GET</span><span class="p">[</span><span class="s1">&#39;z&#39;</span><span class="p">]))</span> <span class="p">{</span> <span class="k">echo</span> <span class="s1">&#39;bad zip (not 5 digits)&#39;</span><span class="p">;</span> <span class="k">exit</span><span class="p">;</span> <span class="p">}</span> </span><span id="L-24"><a name="L-24"></a> </span><span id="L-25"><a name="L-25"></a><span class="c1">//** identify cache file</span> </span><span id="L-26"><a name="L-26"></a><span class="nv">$CACHE_FOLDER</span> <span class="o">=</span> <span class="s1">&#39;cache/&#39;</span><span class="p">;</span> <span class="c1">// Apache must have read/write permission for this folder</span> </span><span id="L-27"><a name="L-27"></a><span class="nv">$json_cache</span> <span class="o">=</span> <span class="nv">$CACHE_FOLDER</span> <span class="o">.</span> <span class="nv">$_GET</span><span class="p">[</span><span class="s1">&#39;z&#39;</span><span class="p">];</span> </span><span id="L-28"><a name="L-28"></a> </span><span id="L-29"><a name="L-29"></a><span class="c1">//** If cache exists, we&#39;re all good</span> </span><span id="L-30"><a name="L-30"></a><span class="k">if</span><span class="p">(</span><span class="nb">file_exists</span><span class="p">(</span><span class="nv">$json_cache</span><span class="p">))</span> <span class="p">{</span> </span><span id="L-31"><a name="L-31"></a> <span class="nv">$json</span> <span class="o">=</span> <span class="nb">implode</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">,</span><span class="nb">file</span><span class="p">(</span><span class="nv">$json_cache</span><span class="p">));</span> </span><span id="L-32"><a name="L-32"></a><span class="p">}</span> <span class="k">else</span> <span class="p">{</span> </span><span id="L-33"><a name="L-33"></a> <span class="c1">// Fetch and process the weather feed</span> </span><span id="L-34"><a name="L-34"></a> <span class="k">require_once</span><span class="p">(</span><span class="s1">&#39;lib/weathercom.php&#39;</span><span class="p">);</span> </span><span id="L-35"><a name="L-35"></a> <span class="nv">$weather_feed</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">weathercom_feed</span><span class="p">(</span><span class="nv">$_GET</span><span class="p">[</span><span class="s1">&#39;z&#39;</span><span class="p">]);</span> </span><span id="L-36"><a name="L-36"></a> </span><span id="L-37"><a name="L-37"></a> <span class="nv">$json</span> <span class="o">=</span> <span class="s2">&quot;var weather_json = &quot;</span> <span class="o">.</span> <span class="nv">$weather_feed</span><span class="o">-&gt;</span><span class="na">parseCurrentWeather</span><span class="p">();</span> </span><span id="L-38"><a name="L-38"></a> <span class="nv">$json</span> <span class="o">.=</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">var forecast_json = &quot;</span> <span class="o">.</span> <span class="nv">$weather_feed</span><span class="o">-&gt;</span><span class="na">parseForecast</span><span class="p">();</span> </span><span id="L-39"><a name="L-39"></a> </span><span id="L-40"><a name="L-40"></a> <span class="c1">// Write cache file</span> </span><span id="L-41"><a name="L-41"></a> <span class="nv">$fp</span> <span class="o">=</span> <span class="nb">fopen</span><span class="p">(</span><span class="nv">$json_cache</span><span class="p">,</span> <span class="s1">&#39;w&#39;</span><span class="p">);</span> </span><span id="L-42"><a name="L-42"></a> <span class="nb">fwrite</span><span class="p">(</span><span class="nv">$fp</span><span class="p">,</span> <span class="nv">$json</span><span class="p">);</span> </span><span id="L-43"><a name="L-43"></a> <span class="nb">fclose</span><span class="p">(</span><span class="nv">$fp</span><span class="p">);</span> </span><span id="L-44"><a name="L-44"></a><span class="p">}</span> </span><span id="L-45"><a name="L-45"></a> </span><span id="L-46"><a name="L-46"></a><span class="c1">// echo out the json so the web site can have it&#39;s precious data!</span> </span><span id="L-47"><a name="L-47"></a><span class="nb">header</span><span class="p">(</span><span class="s2">&quot;Cache-Control: maxage=300&quot;</span><span class="p">);</span> <span class="c1">// HTTP/1.1</span> </span><span id="L-48"><a name="L-48"></a><span class="nb">header</span><span class="p">(</span><span class="s1">&#39;Content-type: application/javascript&#39;</span><span class="p">);</span> </span><span id="L-49"><a name="L-49"></a><span class="k">echo</span> <span class="nv">$json</span><span class="p">;</span> </span></pre></div> </td></tr></table>
php, weathercom