is_bool
Finds out whether a variable is a boolean
&reftitle.description;
boolis_bool
mixedvar
Finds whether the given variable is a boolean.
&reftitle.parameters;
var
The variable being evaluated.
&reftitle.returnvalues;
Returns &true; if var is a boolean,
&false; otherwise.
&reftitle.examples;
<function>is_bool</function> examples
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&reftitle.seealso;
is_float
is_int
is_string
is_object
is_array