Activity Issue: How to Type PHP Zip Code Checker

Question

A matter of proof of logic

It is made from the sum of the 8 digits of the CEP, then subtract the result from the sum of the digits of the CEP of the multiple of 10 immediately superior to the result.

For example: CEP: 71010050 to 7 + 1 + 0 + 1 + 0 + 0 + 5 + 0 = 14 Subtract 14 out of 20. Validator = 6

I’ve done that part:

        $cepCliente = "41600-610";
        $cepClienteSemTraco = str_replace("-", "", $cepCliente);
        $cepClienteArray = str_split($cepClienteSemTraco);
        $cepClienteNumero01 = (int) $cepClienteArray[0];
        $cepClienteNumero02 = (int) $cepClienteArray[1];
        $cepClienteNumero03 = (int) $cepClienteArray[2];
        $cepClienteNumero04 = (int) $cepClienteArray[3];
        $cepClienteNumero05 = (int) $cepClienteArray[4];
        $cepClienteNumero06 = (int) $cepClienteArray[5];
        $cepClienteNumero07 = (int) $cepClienteArray[6];
        $cepClienteNumero08 = (int) $cepClienteArray[7];
        $cepClienteNumero09 = (int) $cepClienteArray[8];
        $somaCep = $cepClienteNumero01+$cepClienteNumero02+$cepClienteNumero03+$cepClienteNumero04+$cepClienteNumero05+$cepClienteNumero06+$cepClienteNumero07+$cepClienteNumero08+$cepClienteNumero09;

The rest I can’t do

Answer 1

I don’t know if this kind of CEP validation is accurate, but given your need to find this validated, you can do something like.

    $cepCliente = "41600-610";
    $cepClienteSemTraco = str_replace("-", "", $cepCliente);
    $cepClienteArray = str_split($cepClienteSemTraco);
    $somaCep = 0;
    foreach ($cepClienteArray as $pos){
        $somaCep += $pos;
    }

According to its formula, it is now necessary to subtract from the multiple of 10 immediately higher than the result:

$multiplo = ceil($somaCep/ 10) * 10;
$validador = $multiplo - $somaCep;

The Ceil will round up the split result, so we multilayer that result by 10 to get the next multiple of 10.