Sunrise sunset converter

mrbig · Jun 3, 2016 · 99e1125 · 99e1125
1 parent a6c095e
commit 99e1125
Showing 1 changed file with 37 additions and 0 deletions.
diff --git a/converter/sunrise.php b/converter/sunrise.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Generates the sunrise/sunset table
+ */
+date_default_timezone_set('UTC');
+$timestamp = new DateTime('2016-01-01 12:00:00');
+
+
+$values = [];
+for ($i=0; $i<365; $i++) {
+    $day = ($timestamp->format('m')-1) * 30 + $timestamp->format('d') -1;
+
+    $sunrise = date_sunrise($timestamp->getTimestamp(), SUNFUNCS_RET_STRING, 47.33, 19);
+    $sunset  = date_sunset($timestamp->getTimestamp(), SUNFUNCS_RET_STRING, 47.33, 19);
+
+    $timestamp->add(new DateInterval('P1D'));
+
+    $values[$day] = [toInt($sunrise), toInt($sunset)];
+}
+
+// feb 29
+$values[59] = $values[58];
+ksort($values);
+
+echo '{';
+echo implode(", ", array_map(
+    function ($v) {
+        return '{' . implode(', ', $v) . '}';
+    },
+    $values
+));
+echo '}', "\n";
+function toInt($str) {
+    list($hour, $minute) = explode(':', $str);
+    return $hour * 60 + $minute;
+}