3 files changed, 189 insertions, 0 deletions
diff --git a/library/fullcalendar/demos/php/get-events.php b/library/fullcalendar/demos/php/get-events.php
new file mode 100644
index 000000000..888201557
--- /dev/null
+++ b/library/fullcalendar/demos/php/get-events.php
@@ -0,0 +1,50 @@
+<?php
+
+//--------------------------------------------------------------------------------------------------
+// This script reads event data from a JSON file and outputs those events which are within the range
+// supplied by the "start" and "end" GET parameters.
+//
+// An optional "timeZone" GET parameter will force all ISO8601 date stings to a given timeZone.
+//
+// Requires PHP 5.2.0 or higher.
+//--------------------------------------------------------------------------------------------------
+
+// Require our Event class and datetime utilities
+require dirname(__FILE__) . '/utils.php';
+
+// Short-circuit if the client did not give us a date range.
+if (!isset($_GET['start']) || !isset($_GET['end'])) {
+  die("Please provide a date range.");
+}
+
+// Parse the start/end parameters.
+// These are assumed to be ISO8601 strings with no time nor timeZone, like "2013-12-29".
+// Since no timeZone will be present, they will parsed as UTC.
+$range_start = parseDateTime($_GET['start']);
+$range_end = parseDateTime($_GET['end']);
+
+// Parse the timeZone parameter if it is present.
+$timeZone = null;
+if (isset($_GET['timeZone'])) {
+  $timeZone = new DateTimeZone($_GET['timeZone']);
+}
+
+// Read and parse our events JSON file into an array of event data arrays.
+$json = file_get_contents(dirname(__FILE__) . '/../json/events.json');
+$input_arrays = json_decode($json, true);
+
+// Accumulate an output array of event data arrays.
+$output_arrays = array();
+foreach ($input_arrays as $array) {
+
+  // Convert the input array into a useful Event object
+  $event = new Event($array, $timeZone);
+
+  // If the event is in-bounds, add it to the output
+  if ($event->isWithinDayRange($range_start, $range_end)) {
+    $output_arrays[] = $event->toArray();
+  }
+}
+
+// Send JSON to the client.
+echo json_encode($output_arrays);
diff --git a/library/fullcalendar/demos/php/get-time-zones.php b/library/fullcalendar/demos/php/get-time-zones.php
new file mode 100644
index 000000000..241e1bd18
--- /dev/null
+++ b/library/fullcalendar/demos/php/get-time-zones.php
@@ -0,0 +1,9 @@
+<?php
+
+//--------------------------------------------------------------------------------------------------
+// This script outputs a JSON array of all timezones (like "America/Chicago") that PHP supports.
+//
+// Requires PHP 5.2.0 or higher.
+//--------------------------------------------------------------------------------------------------
+
+echo json_encode(DateTimeZone::listIdentifiers());
+\ No newline at end of file
diff --git a/library/fullcalendar/demos/php/utils.php b/library/fullcalendar/demos/php/utils.php
new file mode 100644
index 000000000..aa67cda75
--- /dev/null
+++ b/library/fullcalendar/demos/php/utils.php
@@ -0,0 +1,130 @@
+<?php
+
+//--------------------------------------------------------------------------------------------------
+// Utilities for our event-fetching scripts.
+//
+// Requires PHP 5.2.0 or higher.
+//--------------------------------------------------------------------------------------------------
+
+// PHP will fatal error if we attempt to use the DateTime class without this being set.
+date_default_timezone_set('UTC');
+
+
+class Event {
+
+  // Tests whether the given ISO8601 string has a time-of-day or not
+  const ALL_DAY_REGEX = '/^\d{4}-\d\d-\d\d$/'; // matches strings like "2013-12-29"
+
+  public $title;
+  public $allDay; // a boolean
+  public $start; // a DateTime
+  public $end; // a DateTime, or null
+  public $properties = array(); // an array of other misc properties
+
+
+  // Constructs an Event object from the given array of key=>values.
+  // You can optionally force the timeZone of the parsed dates.
+  public function __construct($array, $timeZone=null) {
+
+    $this->title = $array['title'];
+
+    if (isset($array['allDay'])) {
+      // allDay has been explicitly specified
+      $this->allDay = (bool)$array['allDay'];
+    }
+    else {
+      // Guess allDay based off of ISO8601 date strings
+      $this->allDay = preg_match(self::ALL_DAY_REGEX, $array['start']) &&
+        (!isset($array['end']) || preg_match(self::ALL_DAY_REGEX, $array['end']));
+    }
+
+    if ($this->allDay) {
+      // If dates are allDay, we want to parse them in UTC to avoid DST issues.
+      $timeZone = null;
+    }
+
+    // Parse dates
+    $this->start = parseDateTime($array['start'], $timeZone);
+    $this->end = isset($array['end']) ? parseDateTime($array['end'], $timeZone) : null;
+
+    // Record misc properties
+    foreach ($array as $name => $value) {
+      if (!in_array($name, array('title', 'allDay', 'start', 'end'))) {
+        $this->properties[$name] = $value;
+      }
+    }
+  }
+
+
+  // Returns whether the date range of our event intersects with the given all-day range.
+  // $rangeStart and $rangeEnd are assumed to be dates in UTC with 00:00:00 time.
+  public function isWithinDayRange($rangeStart, $rangeEnd) {
+
+    // Normalize our event's dates for comparison with the all-day range.
+    $eventStart = stripTime($this->start);
+
+    if (isset($this->end)) {
+      $eventEnd = stripTime($this->end); // normalize
+    }
+    else {
+      $eventEnd = $eventStart; // consider this a zero-duration event
+    }
+
+    // Check if the two whole-day ranges intersect.
+    return $eventStart < $rangeEnd && $eventEnd >= $rangeStart;
+  }
+
+
+  // Converts this Event object back to a plain data array, to be used for generating JSON
+  public function toArray() {
+
+    // Start with the misc properties (don't worry, PHP won't affect the original array)
+    $array = $this->properties;
+
+    $array['title'] = $this->title;
+
+    // Figure out the date format. This essentially encodes allDay into the date string.
+    if ($this->allDay) {
+      $format = 'Y-m-d'; // output like "2013-12-29"
+    }
+    else {
+      $format = 'c'; // full ISO8601 output, like "2013-12-29T09:00:00+08:00"
+    }
+
+    // Serialize dates into strings
+    $array['start'] = $this->start->format($format);
+    if (isset($this->end)) {
+      $array['end'] = $this->end->format($format);
+    }
+
+    return $array;
+  }
+
+}
+
+
+// Date Utilities
+//----------------------------------------------------------------------------------------------
+
+
+// Parses a string into a DateTime object, optionally forced into the given timeZone.
+function parseDateTime($string, $timeZone=null) {
+  $date = new DateTime(
+    $string,
+    $timeZone ? $timeZone : new DateTimeZone('UTC')
+      // Used only when the string is ambiguous.
+      // Ignored if string has a timeZone offset in it.
+  );
+  if ($timeZone) {
+    // If our timeZone was ignored above, force it.
+    $date->setTimezone($timeZone);
+  }
+  return $date;
+}
+
+
+// Takes the year/month/date values of the given DateTime and converts them to a new DateTime,
+// but in UTC.
+function stripTime($datetime) {
+  return new DateTime($datetime->format('Y-m-d'));
+}