function location_calc_difference in Location 7.5

Same name and namespace in other branches

1. 5.3 location.module \location_calc_difference()
2. 6.3 location.module \location_calc_difference()
3. 7.3 location.module \location_calc_difference()
4. 7.4 location.module \location_calc_difference()

Computes the differences between two locations.

Parameters

$oldloc Original location.:

$newloc New location.:

&$changes Array of changes.: The keys are field names, and the values are boolean FALSE and TRUE.

Return value

Whether or not there were any changes.

2 calls to location_calc_difference()

location_is_empty in ./location.module

Checks if a location is empty, and sets up an array of filled fields.

location_save in ./location.module

Save a location.

File

./location.module, line 1322

Location module main routines. An implementation of a universal API for location manipulation. Provides functions for postal_code proximity searching, deep-linking into online mapping services. Currently, some options are configured through an…

Code

function location_calc_difference($oldloc, $newloc, &$changes) {
  location_strip($oldloc);
  location_strip($newloc);
  $location_changed = FALSE;
  foreach ($newloc as $k => $v) {
    if (!isset($oldloc[$k])) {

      // Field missing from old location, automatic save.
      $changes[$k] = TRUE;
      $location_changed = TRUE;
      continue;
    }
    elseif ($oldloc[$k] === $v) {
      $changes[$k] = FALSE;

      // Exact match, no change.
      continue;
    }

    // It wasn't equal, but perhaps it was equivilent?
    $results = location_invoke_locationapi($newloc, 'isunchanged', $k, $oldloc[$k]);
    $waschanged = TRUE;

    // First, assume changed.
    foreach ($results as $r) {
      if ($r) {
        $waschanged = FALSE;
        $changes[$k] = FALSE;
      }
    }
    if ($waschanged) {

      // Nobody okayed this difference.
      $changes[$k] = TRUE;
      $location_changed = TRUE;
    }
  }
  if (!$location_changed) {
    return FALSE;
  }
  return TRUE;
}