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is_bool (PHP 4 ) is_bool -- Finds out whether a variable is a boolean Descriptionbool is_bool ( mixed var)
Returns TRUE if the var parameter is a boolean.
Example 1. is_bool() examples <?php
$a = false;
$b = 0;
// Since $a is a boolean, this is true
if (is_bool($a)) {
echo "Yes, this is a boolean";
}
// Since $b is not a boolean, this is not true
if (is_bool($b)) {
echo "Yes, this is a boolean";
}
?> |
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See also is_array(), is_float(), is_int(), is_integer(), is_string(), and is_object(). |
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