php example code : is bool function in php - boolean checker

php example code : is_bool function in php - boolean checker

is-boolean-php-example.php


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
  <title>php example code : is_bool function in php - boolean checker</title>
 </head>
 <body>
  <h3>php example code : is_bool function in php - boolean checker</h3>
  <?php
   /*
    ----------------------------------------------------------------------------
    let us make a boolean and test it wheather it is a boolean or not
    by using php is_bool function
    ----------------------------------------------------------------------------
   */
   $myBoolean = true;
   
   $booleanFlag = is_bool($myBoolean);
   
   if($booleanFlag == true)
   {
    echo 'it is a boolean';
   }
   else
   {
    echo 'it is not a boolean';
   }
   
   echo "<br><br>";
   /*
    ----------------------------------------------------------------------------
    let us make a non boolean and test it wheather it is a boolean or not
    by using php is_bool function
    ----------------------------------------------------------------------------
   */
   $myBoolean = NULL;
   
   $booleanFlag = is_bool($myBoolean);
   
   if($booleanFlag == true)
   {
    echo 'it is a boolean';
   }
   else
   {
    echo 'it is not a boolean';
   }
  ?>
 </body>
</html>


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