PHP, Structures and Functions, Fundamental Syntaxes

BOOLEAN

Any data type which can be assigned as FALSE or TRUE, WRONG or RIGHT, or something like that.

BOOLEAN is a type of variable commonly used in PHP.




<?php

/* - - - - - - - - - - - - - - - - - - -

          TRUE or true
          
          FALSE or false

   - - - - - - - - - - - - - - - - - - - */

?>

How are BOOLEANs recognized?

Any variable of type BOOLEAN will always return one of the values designated in the table below.

See also the exercise with examples of this type of variable:

BOOLEAN SPECIFICATION
NAMES		POSSIBLE VALUE
false	FALSE	0
true	TRUE	1
ed48

EXERCISE


<?php

/* - - - - - - - - - - - - - - - - - - - - - - - - - -

    Generally, BOOLEAN data 
    is used in routines which 
    involve decision making


    We will see how, in the 
    near future in this tutorial
    
   - - - - - - - - - - - - - - - - - - - - - - - - - - */

$tr01a = true;
$TR01A = TRUE;

$fl01b = false;
$FL01B = FALSE;

?>