I have this array
$qtd = array(
'acao' => $acao,
'aventura' => $aventura,
'comedia' => $comedia,
'drama' => $drama,
'faroeste' => $faroeste,
'ficcao' => $ficcao,
'suspense' => $suspense,
'terror' => $terror,
'romance' => $romance);
I need the key name of the 3 major, because in all variables are stored numbers, how can I do?
Pretty simple, you can only use native PHP functions for this.
1 - The function arsort to sort by the highest value, keeping keys in the same state as they were.
2 - Then you can use the array_slice function to get the first 3 elements of the vector.
3 - Finally, use array_keys to list only the keys.
Result :
arsort($qtd);
$array_ordenado = array_slice($qtd, 0, 3);
$somente_chaves = array_keys($array_ordenado);
You can do this:
<?php
$qtd = array(
'acao' => 10,
'aventura' => 15,
'comedia' => 20,
'drama' => 15,
'faroeste' => 18,
'ficcao' => 10,
'suspense' => 14,
'terror' => 16,
'romance' => 12);
function maior($array, $quantidade)
{
$bkp = $array;
$retorno = array();
while($quantidade > 0) {
foreach($bkp as $key => $value) {
if($value == max($bkp)) {
$retorno[] = $key;
$quantidade --;
unset($bkp[$key]);
break;
}
}
}
return $retorno;
}
var_dump($qtd);
var_dump(maior($qtd, 5));
Output:
/home/leonardo/www/maior.php:30:
array (size=9)
'acao' => int 10
'aventura' => int 15
'comedia' => int 20
'drama' => int 15
'faroeste' => int 18
'ficcao' => int 10
'suspense' => int 14
'terror' => int 16
'romance' => int 12
/home/leonardo/www/maior.php:31:
array (size=5)
0 => string 'comedia' (length=7)
1 => string 'faroeste' (length=8)
2 => string 'terror' (length=6)
3 => string 'aventura' (length=8)
4 => string 'drama' (length=5)