Set the type of a variable. See the entry on type casting for details.

The variable itself is altered to reflect the change. Only true or false is returned (success or failure). Allowed types:

  • bool
  • boolean
  • int
  • integer
  • float
  • string
  • array
  • object
  • resource
  • null
$a = 1;
$b = 'false';
$c = 0;
$d = true;
$e = 'monkey';
$f = 17;
 
settype($a, 'bool');   // true
settype($b, 'int');    // 0
settype($c, 'string'); // '0'
settype($d, 'string'); // '1'
settype($e, 'array');  // array(0=>'monkey')
settype($f, 'null');   // null
See the manual entry for settype()
Originally posted 2009-03-24