include/form.php

   1 <?
   2 /**
   3  * Form.php
   4  *
   5  * The Form class is meant to simplify the task of keeping
   6  * track of errors in user submitted forms and the form
   7  * field values that were entered correctly.
   8  *
   9  * Written by: Jpmaster77 a.k.a. The Grandmaster of C++ (GMC)
  10  * Last Updated: August 19, 2004
  11  */
  12
  13 class Form
  14 {
  15    var $values = array();  //Holds submitted form field values
  16    var $errors = array();  //Holds submitted form error messages
  17    var $num_errors;   //The number of errors in submitted form
  18
  19    /* Class constructor */
  20    function Form(){
  21       /**
  22        * Get form value and error arrays, used when there
  23        * is an error with a user-submitted form.
  24        */
  25       if(isset($_SESSION['value_array']) && isset($_SESSION['error_array'])){
  26          $this->values = $_SESSION['value_array'];
  27          $this->errors = $_SESSION['error_array'];
  28          $this->num_errors = count($this->errors);
  29
  30          unset($_SESSION['value_array']);
  31          unset($_SESSION['error_array']);
  32       }
  33       else{
  34          $this->num_errors = 0;
  35       }
  36    }
  37
  38    /**
  39     * setValue - Records the value typed into the given
  40     * form field by the user.
  41     */
  42    function setValue($field, $value){
  43       $this->values[$field] = $value;
  44    }
  45
  46    /**
  47     * setError - Records new form error given the form
  48     * field name and the error message attached to it.
  49     */
  50    function setError($field, $errmsg){
  51       $this->errors[$field] = $errmsg;
  52       $this->num_errors = count($this->errors);
  53    }
  54
  55    /**
  56     * value - Returns the value attached to the given
  57     * field, if none exists, the empty string is returned.
  58     */
  59    function value($field){
  60       if(array_key_exists($field,$this->values)){
  61          return htmlspecialchars(stripslashes($this->values[$field]));
  62       }else{
  63          return "";
  64       }
  65    }
  66
  67    /**
  68     * error - Returns the error message attached to the
  69     * given field, if none exists, the empty string is returned.
  70     */
  71    function error($field){
  72       if(array_key_exists($field,$this->errors)){
  73          return "<font size=\"2\" color=\"#ff0000\">".$this->errors[$field]."</font>";
  74       }else{
  75          return "";
  76       }
  77    }
  78
  79    /* getErrorArray - Returns the array of error messages */
  80    function getErrorArray(){
  81       return $this->errors;
  82    }
  83 };
  84
  85 ?>