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For php Data problems, consult experts! Php array

There is an array like this:

Array(    [0] => Array        (            [time] => 1382060855000            [day] => 2013-10-18            [latitude] => 39.9289            [longitude] => 116.3883        )    [1] => Array        (            [time] => 1382060855000            [day] => 2013-10-18            [latitude] => 42            [longitude] => 43.5        )    [2] => Array        (            [time] => 1382060855000            [day] => 2013-10-18            [latitude] => 38.9122            [longitude] => 121.6022        )    [3] => Array        (            [time] => 1382060855000            [day] => 2013-10-18            [latitude] => 40.5525            [longitude] => -74.2915        )    [4] => Array        (            [time] => 1382060855000            [day] => 2013-10-18            [latitude] => 40.5525            [longitude] => -74.2915        )    [5] => Array        (            [time] => 1382060855000            [day] => 2013-10-18            [latitude] => 38.9122            [longitude] => 121.6022        )    [6] => Array        (            [time] => 1382060855000            [day] => 2013-10-18            [latitude] => 38.9122            [longitude] => 121.6022        ))

The latitude and longitude contain repeated data. to filter out duplicate data, you can obtain the number of identical latitude and longitude. The final array is as follows:


How can this be achieved?

Reply to discussion (solution)

$ar = array (  0 =>   array (    'time' => '1382060855000',    'day' => '2013-10-18',    'latitude' => '39.9289',    'longitude' => '116.3883',  ),  1 =>   array (    'time' => '1382060855000',    'day' => '2013-10-18',    'latitude' => '42',    'longitude' => '43.5',  ),  2 =>   array (    'time' => '1382060855000',    'day' => '2013-10-18',    'latitude' => '38.9122',    'longitude' => '121.6022',  ),  3 =>   array (    'time' => '1382060855000',    'day' => '2013-10-18',    'latitude' => '40.5525',    'longitude' => '-74.2915',  ),  4 =>   array (    'time' => '1382060855000',    'day' => '2013-10-18',    'latitude' => '40.5525',    'longitude' => '-74.2915',  ),  5 =>   array (    'time' => '1382060855000',    'day' => '2013-10-18',    'latitude' => '38.9122',    'longitude' => '121.6022',  ),  6 =>   array (    'time' => '1382060855000',    'day' => '2013-10-18',    'latitude' => '38.9122',    'longitude' => '121.6022',  ),);$res = array();foreach($ar as $v) {  $k = $v['latitude'] . ',' . $v['longitude'];  if(isset($res[$k])) $res[$k]['count']++;  else $res[$k] = array('latitude' => $v['latitude'], 'longitude' => $v['longitude'], 'count' => 1);}print_r(array_values($res));

Array
(
[0] => Array
(
[Latitude] = & gt; 39.9289
[Longpolling] => 116.3883
[Count] => 1
)

[1] => Array
(
[Latitude] => 42
[Longpolling] => 43.5
[Count] => 1
)

[2] => Array
(
[Latitude] = & gt; 38.9122
[Longpolling] => 121.6022
[Count] => 3
)

[3] => Array
(
[Latitude] = & gt; 40.5525
[Longpolling] =>-74.2915
[Count] => 2
)

)

Paste the array output by var_export ();