Question

I have a foreach syntax which generates following outcome:

array
  0 => 
    array
      'value' => string '2012-05-09T12:00:00' (length=19)
      'value2' => string '2012-05-09T15:00:00' (length=19)
      'timezone' => string 'Europe/Paris' (length=12)
      'timezone_db' => string 'UTC' (length=3)
      'date_type' => string 'date' (length=4)
  1 => 
    array
      'value' => string '2012-03-14T13:00:00' (length=19)
      'value2' => string '2012-03-14T16:00:00' (length=19)
      'timezone' => string 'Europe/Paris' (length=12)
      'timezone_db' => string 'UTC' (length=3)
      'date_type' => string 'date' (length=4)
  2 => 
    array
      ...
array
  0 => 
    array
      'value' => string '2012-02-08T13:00:00' (length=19)
      'value2' => string '2012-02-08T16:00:00' (length=19)
      'timezone' => string 'Europe/Paris' (length=12)
      'timezone_db' => string 'UTC' (length=3)
      'date_type' => string 'date' (length=4)
  1 => 
    array
      'value' => string '2012-03-14T13:00:00' (length=19)
      'value2' => string '2012-03-14T16:00:00' (length=19)
      'timezone' => string 'Europe/Paris' (length=12)
      'timezone_db' => string 'UTC' (length=3)
      'date_type' => string 'date' (length=4)
  2 => 
    array
      ...

The ... represent a lot more code, all with the same structure.

And here is the php code:

foreach ($result as $term) {
   $node = node_load($term->nid);
   $dates = $node->field_date['und'];
   var_dump($dates);
}

Goal is to compare the results and check them for any inequalities. So what I’m aiming for is a script which allows me to compare $dates[0]['value'] from the first array and $dates[0]['value'] from the second array…

I was thinking of composing new arrays with all the 0 items or all the 1 items and later on check them, but so far no luck. Does anybody have another idea?

Answer 1

$array[] = array(
    'value'       => '2012-03-14T13:00:00',
    'value2'      => '2012-03-14T16:00:00',     // <--- Error
    'timezone'    => 'Europe/Paris',
    'timezone_db' => 'UTC',
    'date_type'   => 'date',
);
$array[] = array(
    'value'       => '2012-03-14T13:00:00a',     // <--- Error
    'value2'      => '2012-03-14T16:00:00', 
    'timezone'    => 'Europe/Paris',
    'timezone_db' => 'UTC',
    'date_type'   => 'date',
);
$array[] = array(
    'value'       => '2012-03-14T13:00:00',
    'value2'      => '2012-03-14T16:00:00tt',    // <--- Error
    'timezone'    => 'Europe/Paris',
    'timezone_db' => 'UTC',
    'date_type'   => 'date11',
);

$errors = array();
for($i=0; $i < count($array)-1; $i++ ) 
    $errors = array_merge( array_diff_assoc($array[$i], $array[$i+1]) );

var_dump($errors);  

/* Output
 * ------
 * Array
 * (
 *     [value] => 2012-03-14T13:00:00a
 *     [value2] => 2012-03-14T16:00:00
 *     [date_type] => date
 * )
 */