用PHP解码base64字符串

Question

I am trying to decode base64 string in PHP.

For example, I can do this in a python script by doing:

s = "0CC0QFjAA"
base64.b64decode(str(s)+'=====', '_-');

How can I decode base64 strings in PHP?

Answer 1

I think this would do it:

$decoded = base64_decode(str_replace(array('_', '-'), array('+', '/'), $s));

If you need the more general form:

function b64decode($str, $altchars = null) {
    if ($altchars) {
        $altarray = array($altchars[0], $altchars[1]);
        $str = str_replace($altarray, array('+', '/'), $str);
    }
    return base64_decode($str);
}

Answer 2

The PHP function is called base64_decode . You could call it like base64_decode($s);