CODEWITHSUNDEEP
phparrays
Jake Lee
Jake Lee

Reputation: 7989

Remove elements from multidimensional array where [2] = x

I saw many similar questions, but they seemed to be slightly different in that if any value was x, remove that element. If I've missed the Q&A, apologies.

I have an array of the form:

0 => ("A Name", 22, 33, 44, 55)
1 => ("Another", 2, 3, 4, 5)
etc

I want to essentially perform "If $array[*][2] = 33, remove that element", which in this case would remove A Name's record.

I'm relatively confident unset() & a foreach loop are required, but I'm honestly not sure how. I'm not sure how to use the foreach for a specific inner array value, but all outer array values.

EDIT: Current progress is essentially blundering around cluelessly with this:

        foreach($tempArray{$i} as $key => $value) {
            if ($value[2] == 33) { unset($array[$key]); }
        }

Upvotes: 0

Views: 59

Answers (2)

hlscalon
hlscalon

Reputation: 7552

You could use a different approach, taking use of php functions such array_filter and array_column (this one PHP 5.5 +);

$array = [
  ["A Name", 22, 33, 44, 55],
  ["Another", 33, 23, 14, 15]
];

print_r( 

$array[
    key(
        array_filter(
            array_column($array,2), function($a){
                if ($a == 33)
                   return false;
            return true;
        })
    )
]


);

Upvotes: 2

AbraCadaver
AbraCadaver

Reputation: 78994

Well, you sort of tried, so try this:

foreach($array as $key => $val) {
    if($val[2] == 33) {
        unset($array[$key]);
    }
}

Not sure what the $tempArray{$i} was. foreach will iterate through the array where you can use the key and value.

Upvotes: 5

Related Questions