is real function in php example

php example code : is_real function in php

is-real-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_real function in php</title>
 </head>
 <body>
  <h3>php example code : is_real function in php</h3>
  <?php
   /*
    -------------------------------------------------
    let us make a real number and test it wheather it is real or not
    by using php is_real function
    -------------------------------------------------
   */
   $myNumber = 9999999999999999.999999999999999;
   
   $realFlag = is_real($myNumber);
   
   if($realFlag == true)
   {
    echo 'it is a real number';
   }
   else
   {
    echo 'it is not a real number';
   }
   
   echo "<br><br>";
   
   /*
    -------------------------------------------------
    let us make an un-real number and test it wheather it is real or not
    by using php is_real function
    -------------------------------------------------
   */
   $myNumber = -12/6;
   
   $realFlag = is_real($myNumber);
   
   if($realFlag == true)
   {
    echo 'it is a real number';
   }
   else
   {
    echo "<h4 style='background:#cccccc; color: yellow;'>it is not a real number</h4>";
   }
  ?>
 </body>
</html>


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