php array_search and unset multidimensional array

Question

I'm trying to search through array and unset some elements if they are present in other array.

[scores] => Array
    (
        [1100190] => 0.15783204288267
        [1100213] => 0.15893037336024
        [2100230] => 0.16258444005331
        [1100516] => 0.16554697418536
        [1100973] => 0.16967437235894
    )

[explanation codes] => Array
    (
        [1100190] => 0
        [1100213] => 0
        [2100230] => 0
        [1100516] => 0
        [1100973] => 0
    )

So, I want for example key "[1100190]" to be removed. This is what I have for now:

// filter out keys we don't want
for($j=0; $j < count($filterData); $j++) {
    $position = array_search($filterData[$j], $recs);
    if($position != false) {
        foreach($recs as $key => $arr) {
            unset($recs[$key][$position]);
        }
    }
 }

In $filterData I have for example: 11111, 1100190. I'm not getting anything for $position when I try to echo it and my filter is not working. Thanks in advance.

Solution:

foreach($recs as $key => $arr) {
    $position = array_search($key, $filterData);
    if($position != false) {
        unset($recs[$key]);
    }
}

This is what did the trick, thanks for help, especially keune.

You can search the key with: php.net/manual/en/function.array-key-exists.php — Seazoux
– Seazoux, Commented Aug 31, 2013 at 10:34

Dale · Accepted Answer · 2013-08-31 10:39:54Z

1

As suggested I would use array key exists

foreach ($filterData as $k => $v)
{
    if (array_key_exists($k, $recs))
    {
        unset($recs[$k]);
    }
}

answered Aug 31, 2013 at 10:39

Dale

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Comments

keune · Accepted Answer · 2013-08-31 10:41:36Z

1

You need to do the search in every key of the $recs array. Try this:

for($j=0; $j < count($filterData); $j++) {
    foreach($recs as $key => $arr) {
        $position = array_search($filterData[$j], $arr);
        if($position !== false) {
            unset($recs[$key][$position]);
        }
    }
}

answered Aug 31, 2013 at 10:41

keune

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