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(Resolvido) Retirar vírgula



Olá colegas...

minha mente tá bloqueada :lol: . Tenho o seguinte código:

<input type="checkbox" name="dados[]" value="1">
<input type="checkbox" name="dados[]" value="2">
<input type="checkbox" name="dados[]" value="3">
pego esses valores com PHP:
$dados = $_POST["dados"];

foreach($dados as $d) {
        $d = $d. ",";    

Até aqui tudo bem, ok, funciona, funciona.... mas... como faço para retirar a maldita da vírgula que fica no final da variável??!?!?!? kkkkkkkkkkkk


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