(PHP 5 >= 5.5.0, PHP 7, PHP 8)
boolval — Get the boolean value of a variable
value
The scalar value being converted to a bool.
The bool value of value
.
Example #1 boolval() examples
<?phpecho '0: '.(boolval(0) ? 'true' : 'false')."\n";echo '42: '.(boolval(42) ? 'true' : 'false')."\n";echo '0.0: '.(boolval(0.0) ? 'true' : 'false')."\n";echo '4.2: '.(boolval(4.2) ? 'true' : 'false')."\n";echo '"": '.(boolval("") ? 'true' : 'false')."\n";echo '"string": '.(boolval("string") ? 'true' : 'false')."\n";echo '"0": '.(boolval("0") ? 'true' : 'false')."\n";echo '"1": '.(boolval("1") ? 'true' : 'false')."\n";echo '[1, 2]: '.(boolval([1, 2]) ? 'true' : 'false')."\n";echo '[]: '.(boolval([]) ? 'true' : 'false')."\n";echo 'stdClass: '.(boolval(new stdClass) ? 'true' : 'false')."\n";?>
The above example will output:
0: false 42: true 0.0: false 4.2: true "": false "string": true "0": false "1": true [1, 2]: true []: false stdClass: true