How to remove null value from a foreach or array

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How to remove null value from a foreach or array

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#1 by (2 votes)
#2 by (0 votes)

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I'm doing a query on a table that has a blank value (student: note). In a page I do the function with select and set the array on a return to call on another page, but I can not delete the blank value to print only those that have data.

$valor = dados_aluno($mysqli);

foreach($valor as $resultado) {

$nome_aluno        = $resultado[1];
$nota              = $resultado[2];

}

php array foreach

asked by anonymous 14.06.2018 / 15:55

2 answers

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score 2 · Answer 1

If you use continue after verifying that $resultado[2] is null it will move on to the next element without executing the code it is after.

foreach($valor as $resultado) {
    $nome_aluno = $resultado[1];
    $nota       = $resultado[2];

    if (empty($nota)) {
        continue;
    }
}

I changed the is_null to be empty , since the $nota is white and not null.

score 0 · Answer 2

In my application the friend example worked without the keys. I changed the if as well.

$valor = dados_aluno($mysqli);

foreach($valor as $resultado) {
$nome_aluno = $resultado[1];
$nota       = $resultado[2];

if ($nota == "") 
    continue;

}