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Validação de Dados


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Tenho o seguinte codigo de validação de user e password num sistema de login.

return (preg_match('/^[a-zA-Z0-9]{5,12}$/',$this->_email) && preg_match('/^[a-zA-Z0-9]{5,12}$/',$this->_password))? 1 : 0;

para poder validar emails ou seja poder validar essencialmente "@" como fica o preg_match?

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