The isset() Function : Variable Set Unset « Language Basics « PHP






  1. PHP
  2. Language Basics
  3. Variable Set Unset

The isset() Function

<html>
<head>
     <title>Isset()</title>
</head>
<body>
<?php
     $my_var = 100;
   
     if(isset($my_var)) {
          print("\$my_var is set... the value is " . $my_var);
     }
   
     print("<br/>");
     print(isset($some_var) . "<br />");
   
     $some_var = "I am set";
     print(isset($some_var) . "<br />");
?>
</body>
</html>








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