- var_dump: documentation ( source)
- settype: documentation ( source)
- pi: documentation ( source)
<?php
$str = pi();
$a = strval($str);
$b = (string)$str;
$c = "$str";
$d = settype($str, "string");
var_dump($a);
var_dump($b);
var_dump($c);
var_dump($d);
$p = M_PI;
echo gettype($p);