lib/HTML_Input.php

   1 <?php
   2 /**
   3  * Object-oriented HTML input field with validation
   4  *
   5  * @author Ant P <p@cpi.merseine.nu>
   6  * @license http://specialops.ath.cx/repos/so2/trunk/COPYING (New BSD Licence)
   7  * @version 2.15
   8  */
   9 class HTML_Input
  10 {
  11     public $name;
  12     public $value;
  13     public $maxlength;
  14
  15     function __construct($name, $value = '', $length = 20)
  16     {
  17         $this->name = $name;
  18         $this->value = $value;
  19         $this->maxlength = $length;
  20     }
  21
  22     function check_value()
  23     {
  24         if ( ! isset($_POST[$this->name])
  25         or   $this->maxlength && strlen($_POST[$this->name]) > $this->maxlength ) {
  26             throw new OutOfBoundsException('Bad or no value given for form field "'.$this->name);
  27         }
  28
  29     }
  30
  31     function toString()
  32     {
  33         $field = '<input type="text"';
  34
  35         foreach ( $this as $k => $v )
  36             if ( ! empty($k) )
  37                 $field .= " $k=\"$v\"";
  38
  39         if ( is_null($this->default) && isset($_POST[$this->name]) )
  40             $field .= ' value="'.$_POST[$this->name].'"';
  41
  42         return $field.'/>';
  43     }
  44 }
  45 ?>