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2

I am using array_map function in my php application. I defined the array_map function like this.

$ratingID =  $this->db->insert_id();

    $rated_item_array = array_map(function ($a) {
        return $a + array('RatingID' => $ratingID);
    }, $rated_item_array);

Php notice comes 

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: ratingID

When i print the $ratingID . i prints the value correctly , so $ratingID is defined. Why it is undfined in array_map function? My $rated_item_array is 

Array
(
    [0] => Array
        (
            [RatingFactorPreferenceID] => 1,
            [PreferenceID] => 45,
            [RatedValue] => 1,
            [CreatedOn] => 1326790338,
            [CreatedBy] => 25
        )

    [1] => Array
        (
            [RatingFactorPreferenceID] => 2,
            [PreferenceID] => 45,
            [RatedValue] => 1,
            [CreatedOn] => 1326790338,
            [CreatedBy] => 25
        )

    [2] => Array
        (
            [RatingFactorPreferenceID] => 3,
            [PreferenceID] => 45,
            [RatedValue] => 1,
            [CreatedOn] => 1326790338,
            [CreatedBy] => 25
        )
)
share|improve this question

1 Answer 1

up vote 22 down vote accepted 
$rated_item_array = array_map(
  function ($a) use ($ratingID){ 
    return $a + array('RatingID' => $ratingID ); 
  }, 
  $rated_item_array
);
share|improve this answer
    
works perfectly . thank you very much –  Kanishka Panamaldeniya Jan 17 '12 at 9:02
1  
thanks for nice answer. –  vikas Oct 28 '14 at 2:54
    
From php.net documentation on anonymous functions. "Closures may also inherit variables from the parent scope. Any such variables must be passed to the use language construct." Look at example #3 php.net/manual/en/functions.anonymous.php –  Josh Frankel Jun 12 at 14:39

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