The boolval Function

The boolval function returns the boolean value (true or false) of a variable. It accepts one parameter - the value to be converted to boolean type.

Syntax

phpboolval(mixed $value): bool

Example

Convert various data types to boolean values:

php<?php
  var_dump(boolval(0));         // false
  var_dump(boolval(1));         // true
  var_dump(boolval(''));        // false
  var_dump(boolval('abc'));     // true
  var_dump(boolval([]));        // false
  var_dump(boolval([1, 2]));    // true
?>

Example

Using the function with objects:

php<?php
  class Test {
    public $prop = 1;
  }
  
  $obj = new Test();
  var_dump(boolval($obj));      // true
  var_dump(boolval(new stdClass())); // true
?>

Code execution result:

phptrue
true

See Also