PHP is_bool() Function

The is_bool() Function in PHP is used to find whether a variable is a Boolean or not. It returns a Boolean value true if the parameter var is a Boolean else it returns false.

Syntax

is_bool ( mixed $var )

Parameter

var(required)- This parameter represents the variable being evaluated.

Return

This function returns a Boolean value TRUE if the parameter ‘var’ is a Boolean, else it returns FALSE.

Example 1

Output

The given variable is a Boolean value.

Example 2

Output

The given variable is a Boolean value.

Example 3

Output

The given variable is not a Boolean value.

Example 4

Output

The given variable is not a Boolean value.

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