topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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professional-ajax-03-Communication-Control-Patterns-Submission-Throttling-ValidateForm.php / php



  <?php
      valid = "false";
      message = "An unknown error occurred.";
  
      if (isset(_GET["txtUsername"])) {
      
          //load array of usernames
          usernames = array();
          usernames[] = "SuperBlue";
          usernames[] = "Ninja123";
          usernames[] = "Daisy1724";
          usernames[] = "NatPack";
          
          //check usernames
          if (in_array(_GET["txtUsername"], usernames)) {
              message = "This username already exists. Please choose another.";
          } else if (strlen(_GET["txtUsername"]) < 8) {
              message = "Username must be at least 8 characters long.";
          } else {
              valid = "true";
              message = "";
          }
      
      } else if (isset(_GET["txtBirthday"])) {
      
          date = strtotime(_GET["txtBirthday"]);
          if (date < 0) {
              message = "This is not a valid date.";
          } else {
              valid = "true";
              message = "";
          }
      
      } else if (isset(_GET["txtEmail"])) {
      
          if(!eregi(
             "^ [a-z0-9-]+(\. [a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})",  
             _GET["txtEmail"])) {
              message = "This e-mail address is not valid";
          } else {
              valid = "true";
              message = "";
          }    
      }
  
      echo "valid||message"; ?>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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