Check if a value is inside an array

Question

would like to do the following: User inserts their zip code and a field input and the value that he entered within this field wanted to compare whether it is in the CEP range (01000 to 19999) of the state of SP.

My doubts:

1st - In case I would have to assemble an array with the numbers from 01000 to 19999?

2nd - How would I know if the value of inserted in input contains in the array?

Answer 1

JS

var cep = '13426000';

if(arrayCeps.indexOf(cep) > -1){
   console.log('Tem no Array');
}

jQuery

if($.inArray(cep, ArrayCeps) > -1){
   console.log('Tem no Array');
}

PHP

With in_array($valor, $array) you check value.

$cep = '13426000';

if(in_array($cep, $arrayCeps){
   echo "Tem no Array";
}

With the array_key_exists($chave, $array) key check.