You want the value for NYC Bobby?
Here's the code. Save it as get-aqi-rss.php
<?php
//Current Air Quality URL
$urlRealtime = "http://feeds.enviroflash.info/rss/realtime/94.xml"; //New York City, NY
// Images Directory
$imagesDir = "./ajax-images";
// GET THE DATA FROM URL
getAQIdata($urlRealtime, "realtime");
//// FUNCTIONS
// Data aquisition
function getAQIdata($AQIurl,$type) {
global $$type;
$$type = array();
$typeA = $type;
$typeA = new DOMDocument();
$typeA->load($AQIurl);
foreach ($typeA->getElementsByTagName('item') as $node) {
$itemRSS = array (
'title' => $node->getElementsByTagName('title')->item(0)->nodeValue,
'desc' => $node->getElementsByTagName('description')->item(0)->nodeValue,
);
array_push($$type, $itemRSS);
}
}
// strip out the needed data
preg_match('|<br /><br />\n(.*) - (.*) AQI - (.*)<br />\n|Uis', $realtime[0]["desc"], $r3);
$realIndex2 = 'N/A';
$realValue2 = 'N/A';
$realMeasure2 = 'N/A';
// search for two AQI types
if(preg_match('|<br /><br />\n(.*) - (.*) AQI - (.*)<br />(.*) - (.*) AQI - (.*)</div>|Uis', $realtime[0]["desc"])) {
preg_match('|<br /><br />\n(.*) - (.*) AQI - (.*)<br />(.*) - (.*) AQI - (.*)</div>|Uis', $realtime[0]["desc"], $r3);
$realIndex2 = trim(strip_tags($r3[4]));
$realValue2 = trim(strip_tags($r3[5]));
$realMeasure2 = trim(strip_tags($r3[6]));
}
$realIndex1 = trim(strip_tags($r3[1]));
$realValue1 = trim(strip_tags($r3[2]));
$realMeasure1 = trim(strip_tags($r3[3]));
// get the last update
preg_match('|Last Update: (.*)</i>|', $realtime[0]["desc"], $r4);
$realUpdate = trim(strip_tags($r4[1]));
// arrays for comparing levels and values
$aqiValues = array('0-50', '51-100', '101-150', '151-200', '201-300', '301-500');
$aqiLevels = array('Good', 'Moderate', 'Unhealthy for Sensitive Groups', 'Unhealthy', 'Very Unhealthy', 'Hazardous');
$aqiGraphic = array('AQI1.jpg', 'AQI2.jpg', 'AQI3.jpg', 'AQI4.jpg', 'AQI5.jpg', 'AQI6.jpg'); ////////////////////////////////////////////
// Associate AQI level with graphic icon
function getGraphic($value, $levels, $graphic, $iDir) {
global $levelImage;
$var = array_search($value, $levels);
if($value !== 'N/A') {
$levelImage = "<img src=\"".$iDir."/".$graphic["$var"]."\" alt=\"".$levels["$var"]."\" title=\"".$levels["$var"]."\" border=\"0\" />";
echo $levelImage;
}
else {
$levelImage = "<img src=\"".$iDir."/aqi_nodata_text.gif\" alt=\"No Data\" title=\"No Data\" border=\"0\" />";
echo $levelImage;
}
}
//// END OF FUNCTIONS
?>
