is_bool
is_bool
(PHP 4, PHP 5, PHP 7)
is_bool — Finds out whether a variable is a boolean
Description
bool is_bool ( mixed $var )
Finds whether the given variable is a boolean.
Parameters
var
The variable being evaluated.
Return Values
Returns TRUE if var is a boolean, FALSE otherwise.
Examples
Example #1 is_bool() examples
<?php
$a = false;
$b = 0;
// Since $a is a boolean, it will return true
if (is_bool($a) === true) {
echo "Yes, this is a boolean";
}
// Since $b is not a boolean, it will return false
if (is_bool($b) === false) {
echo "No, this is not a boolean";
}
?>
See Also
- is_float() - Finds whether the type of a variable is float
- is_int() - Find whether the type of a variable is integer
- is_string() - Find whether the type of a variable is string
- is_object() - Finds whether a variable is an object
- is_array() - Finds whether a variable is an array
← is_array
is_callable →
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