How to remove character from a String and turn it into integer value with PHP?

Question

I need to convert an entire string and removing the "R$ " from the value.

$valor = $_SESSION['valor'];

echo $valor;

Return the string: R$ 25,00

I need you to take the R$ and return the entire amount: 2500.

How can I do?

Answer 1

If you are not calling decimals, commas and want to extract only numbers from text, do the following:

$str = $_SESSION['valor'];
preg_match_all('!\d+!', $str, $matches);

echo $matches;

The exit will be 2500.

Answer 2

You can simply remove the comma and the R$, this way:

$sua_variavel = str_replace ( ',' , '' , $variave_inicial );
$sua_variavel = str_replace ( 'R$' , '' , $sua_variavel );

In the first line will remove the , and in the second the R$

Answer 3

Several ways to achieve this result, another one is:

$valor = preg_replace("/[^0-9]+/i","",$valor);

However it is a numeric output, to convert to int, is used:

$valor = (int) preg_replace("/[^0-9]+/i","",$valor);
//ou
$valor = intval(preg_replace("/[^0-9]+/i","",$valor));