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Title : Class to build a select tag in html, useful to build select boxes from a data base
Categories : PHP, HTML and PHP, PHP Classes Click here to Update Your Picture
David Perez
Date : Oct 17th 2002
Grade : 3 of 5 (graded 7 times)
Viewed : 12455
File : No file for this code example.
Images : No Images for this code example.
Search : More code by David Perez
Action : Grade This Code Example
Tools : My Examples List
Code

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<?php
class Combo
{
var $label;
var $index;
var $value;
var $description;

function Combo ()
  {
   $this->label = "Select an option: ";
   $this->index = -1;
   $this->value = "";
   $this->description = "";

  }

function addItem ($value, $description)
  {
   $this->index++;
   $this->value[$this->index] = $value;
   $this->description[$this->index] = $description;
  }

function clear()
  {
   $this->Combo();
  }

function display ($name, $subnit)
  {
   if ($this->index<0)
    {
     echo "";
    }
   else
    {
     echo $this->label . "<select name=\"$name\" ";
     if ($subnit!="") echo " OnSubmit=\"$subnit\" ";
     //if you want to use some other event just add it in this function
     echo ">\r";  // the \r is only for a clear html coding...
     for ($x=0;$x<$this->index+1;$x++)
      {
       echo "<option value=\"" . $this->value[$x] . "\">" . $this->description
[$x] . "</option>\r";
      }
     echo "</select>\r";
    }
  }

}// End Class
?>
<form>
<?
$cmb = new Combo;
$cmb->addItem("A","Opci󮠁");
$cmb->addItem("B","Opci󮠂");
$cmb->addItem("C","Opci󮠃");
$cmb->display("letras","gotoLetras(this);");
$cmb->clear();
$cmb->label = "Choose a number";    //Chamging the label
$cmb->addItem("1","Opci󮠱");
$cmb->addItem("2","Opci󮠲");
$cmb->addItem("3","Opci󮠳");
$cmb->display("N?s","gotoNumeros(this);");
?>
</form>



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User Comments
 David Perez wrote :870
some changes in the function display
function display ($name, $selected, $subnit)
  {
   if ($this-&gt;index&lt;0)
    {
     echo "";
    }
   else
    {
     echo $this-&gt;label . "&lt;select name=\"$name\" ";
     if ($subnit!="") echo " OnSubmit=\"$subnit\" ";
     //if you want to use some other event just add it in this function
     echo "&gt;\r";  // the \r is only for a clear html coding...
     for ($x=0;$x&lt;$this-&gt;index+1;$x++)
      {
       echo "&lt;option value=\"" . $this-&gt;value[$x] . "\"";
       if ($selected==$this-&gt;value[$x]) echo " selected ";
       echo "&gt;" . $this-&gt;description[$x] . "&lt;/option&gt;\r";
      }
     echo "&lt;/select&gt;\r";
    }
  }
and now should be called like...
$cmb-&gt;display("Nmeros","2","gotoNumeros(this);");
this change is for select one option by default