is_bool

(PHP 4, PHP 5)

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 $a is a boolean, this is true
if (is_bool($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";
}
?>


Follow phpf1 on Twitter




F1 Site Family
AJAX F1
HTML F1
Java F1
JavaScript F1
PHP F1

Total time: 0.0323