Variable handling Functions
<?
// Hack for old php versions to use boolval()
if (!function_exists('boolval')) {
function boolval($val) {
return (bool) $val;
}
}
?>
boolval
(PHP 5 >= 5.5.0)
boolval — Get the boolean value of a variable
Parameters
-
var -
The scalar value being converted to a boolean.
Return Values
The boolean value of var.
Examples
Example #1 boolval() examples
<?php
echo '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 '[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 [1, 2]: true []: false stdClass: true
See Also
- floatval() - Get float value of a variable
- intval() - Get the integer value of a variable
- strval() - Get string value of a variable
- settype() - Set the type of a variable
- is_bool() - Finds out whether a variable is a boolean
- Type juggling
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User Contributed Notes
boolval - [1 notes]
info at lomalkin dot ru ¶
1 month ago