Get field value from form defined by array

[opera13]

I'm having an awful time trying to get a form field defined by a variable (which is stored in an array) to evaluate out to its value.

 

In my code, I create a class that defines a way of constructing a form. Later I define a multidimensional array that is sent to the class to create the form. Up to that point, everything works and displays nicely. Once I enter data into my fields and submit them, however, I reach a problem. The values are definately being sent, because I can call them outright, as I do in the first two lines of the function DisplayForm(). But I cannot get them to evaluate out to their values if I try to pull the field names from the array. Additionally, straightforwardly declaring the variables as $name or $description, without the scope of $_POST, is ineffective within the function, which surprises me. (This may be simple ignorance, as this is my first function.). Please help! The code follows.

 

 

<?php

 

class Form {

 

  function DisplayForm( ) {

        echo "Name:". $_POST['name']. "<br>";

        echo "Description:".$_POST['description']. "<br>";

       

        foreach($this->Fields as $value){

            $fieldName="$"."_POST"."['".$value[2]."']";       

            echo $value[2].":".${fieldName}."<br />";

        }

   

echo "<form action=\"class_testb.php\" method=\"post\">\n";

foreach($this->Fields as $value){

switch($value[0]){

case "textbox":

echo $value[1]. " <input type=\"text\" name=\"".$value[2]."\" value=\"\" /><br/>\n";

break;

case "textarea":

echo $value[1]. "<textarea name=\"".$value[2]. "\" rows=\"5\" cols=\"50\"/></textarea><br/>\n";

break;

        }

    }

echo "<input type=\"submit\" name=\"submit\" value=\"submit\"/>\n";

echo "</form>\n";

  }

 

  function SetFields( $FormFields ) {

    $this->Fields = $FormFields; 

  }

}

$Sample = new Form;

// array(type of field, label for field,  name of field, validation required)

$Fields = array(    array("textbox","Name","name" , "required"),

        array("textarea",  "Description","description" , "required"),

                    );

$Sample->SetFields( $Fields );

$Sample->DisplayForm();

?>