remove duplicates values from array

Question

I have an array which looks like-

Array
(
    [0] => stdClass Object
    (
        [post_date] => 2017-01-04 14:28:00
    )

    [1] => stdClass Object
    (
        [post_date] => 2017-01-05 11:06:00
    )

    [2] => stdClass Object
    (
        [post_date] => 2017-02-04 14:28:00
    )

    [3] => stdClass Object
    (
        [post_date] => 2017-02-04 14:34:00
    )
)

I used substr() function to get particular part-

foreach($unique_dates as $val) { 
    $year=substr($val->post_date,0,4);
    $month=substr($val->post_date,5,2);
    $monthName = date('F', mktime(0, 0, 0, $month, 10)); 
    echo $monthName." ".$year."<br>";
}

Now It is showing output like -

January 2017  
January 2017  
February 2017  
February 2017

But I want Output like -

 January 2017  
February 2017

I tried as follows but didn't get proper output-

$unique_dates = array_map(
                    'unserialize',
                     array_unique(
                         array_map(
                             'serialize',
                             $dates
                         )
                     )
                );

I want to remove duplicates values.
How is this possible?
Thanks.

So this will be your array to make unique right ? $monthName." ".$year — Rahul
– Rahul, Commented Jan 5, 2017 at 6:46
$arr = [ "January 2017","January 2017","February 2017","February 2017" ]; print_r(array_unique($arr)); This is simple answer then, but I think you want something different — Rahul
– Rahul, Commented Jan 5, 2017 at 6:51
as @VforVendetta said, array_unique is working as you asked deepak... Array ( [0] => January 2017 [2] => February 2017 ) this is the o/p I got — balu anand
– balu anand, Commented Jan 5, 2017 at 6:57

LF-DevJourney · Accepted Answer · 2017-01-05 09:31:06Z

1

run it like this:

foreach($unique_dates as $val) { 
    $year=substr($val->post_date,0,4);
    $month=substr($val->post_date,5,2);
    $monthName = date('F', mktime(0, 0, 0, $month, 10)); 
    $result[] = $monthName." ".$year;
} 
$result = array_flip($result); // here will remove the duplicate value, and return as the keys of the array.
array_walk($results, function($v, $k){echo $k.'<br>';});

edited Jan 5, 2017 at 9:31

answered Jan 5, 2017 at 7:12

LF-DevJourney

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1 Comment

amM Over a year ago

@ Kris sorry for late reply. This is exactly what I wanted. Thanks for help.

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