include/form.php

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