dpgui8229808 2017-11-13 11:02
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在laravel框架中删除PHP中的重复数组

I have more than 4 arrays in single variable as shown below

$myArray = Array ( [0] => NA [1] => NA [2] => USA [3] => NA [4] => Texas )Array ( [0] => NA [1] => NA [2] => UK [3] => NA [4] => Texas  )Array ( [0] => NA [1] => NA [2] => USA [3] => NA [4] => Texas ) Array ( [0] => NA [1] => NA [2] => UAE [3] => NA [4] => Texas )

Now i need to compare each and every array of [2] index.

If second index ([2] => USA) is present in some other array then delete duplicate array.

Finally the arrays should look like this

Array ( [0] => NA [1] => NA [2] => USA [3] => NA [4] => Texas )Array ( [0] => NA [1] => NA [2] => UK [3] => NA [4] => Texas )Array ( [0] => NA [1] => NA [2] => UAE [3] => NA [4] => Texas ).

I have tried this but not able to sort it out.

$myArray = array_map("unserialize", array_unique(array_map("serialize", $myArray)));

Is there any way?

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2条回答 默认 最新

  • doulong4169 2017-11-13 11:15
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    You can use a foreach loop for this, like DEMO:

    $match = [];
    foreach($myArray as $key => $value)
    {
        if(!in_array($value[2], $match))
        {
            $match[] = $value[2];
            continue;
        }
        unset($myArray[$key]);
    }
    

    This will remove all of the arrays which have duplicate value for [2]

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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