Question

i have an array like this:

$d=array('good'=>10,'very good'=>20,'bad'=>1);

i want to find key from it when 13 number closest vlaue of array.

for example 16 close to 20 in $d array .

like result:

key:very good
value:20

Code

$d=array('good'=>10,'very good'=>20,'bad'=>1);

$find=13;
foreach(array_chunk($find, 5) as $val) {
    echo reset($val) . "-" . end($val);
}

sorry for my english.

Answer 1

This is not very pretty code, but I think it does what you want it to.

$d=array('good'=>10,'very good'=>20,'bad'=>1);

$closest = array('int' => -1, 'key' => null);
$find = 16;
foreach($d as $k=>$v) {
    if ($closest['int'] == -1) { $closest['int'] = abs($find-$v); $closest['key'] = $k; continue; }
    if (abs($find - $v) < $closest['int']) {
        $closest['int'] = abs($find-$v);
        $closest['key'] = $k;
    }
}

echo "key:".$closest['key']."
value:".$d[$closest['key']];