Question: remove duplicates values from array

Question

remove duplicates values from array

Answers 1
Added at 2017-01-05 07:01
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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.

Answers to

remove duplicates values from array

nr: #1 dodano: 2017-01-05 08:01

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>';});
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