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Diffstat (limited to 'src/AppBundle/Utils')
-rw-r--r--src/AppBundle/Utils/Aqi.php43
1 files changed, 43 insertions, 0 deletions
diff --git a/src/AppBundle/Utils/Aqi.php b/src/AppBundle/Utils/Aqi.php
new file mode 100644
index 0000000..6451c77
--- /dev/null
+++ b/src/AppBundle/Utils/Aqi.php
@@ -0,0 +1,43 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: andy
+ * Date: 11/30/17
+ * Time: 11:27 AM
+ *
+ *
+ */
+
+Namespace AppBundle\Utils;
+
+class Aqi {
+ public function calculateAQI($gasName, $concentration, $table) {
+ $bpLow = 1;
+ $bpHi = 2;
+ $bpLowIndex = 1;
+ $bpHiIndex = 1;
+
+ $arr = $table ->{$gasName} ->{'breakpoints'};
+ foreach ($arr as $index => $value) {
+ if ($value < $concentration && $table->{$gasN