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(Resolvido) Remover letras da Variavel


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Então, eu fiz um código em PHP.

<textarea>/agendarcadeia <?php echo $player; echo " $punicao"; echo " $motivo" ?></textarea>

Porém na variavel $punicao eu quero que apareça somente os números, pois contem letras também.

Um exemplo de como ficaria com o campo preenchido.

/agendarcadeia Fire_Nando 180 minutos Ant-Rpg Double

Como eu gostaria que ficasse.

/agendarcadeia Fire_Nando 180 Ant-Rpg Double
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