Using HTML Forms With PHP
By Nicholas Chase
2004-01-09
Reader Rating: 
Accessing Form Value Collections
For those who are running older systems or want to get away from globals altogether, you have the option to use the $HTTP_GET_VARS and $HTTP_POST_VARS arrays. These collections are deprecated, but they are still available, and still in wide use. When they do go away, they'll be replaced by the $_GET and $_POST arrays, added in version 4.1.
Both of these arrays are of a type known as hash tables. A hash table is an array that is indexed by string values rather than integers. In the case of forms, the values are accessible by their name, as shown in Listing 3:
Listing 3. Accessing form values through hash tables
<?
$ship_value =
$HTTP_GET_VARS['ship'];
echo $ship_value;
echo "<br />";
$tripdate_value =
$HTTP_GET_VARS['tripdate'];
echo $tripdate_value;
echo "<br />"
;
$exploration_value= $HTTP_GET_VARS['exploration'];
echo $exploration_value;
echo "<br />";
$contact_value = $HTTP_GET_VARS['contact'];
echo $contact_value;
?>
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You can use this method to retrieve values for each of your fields by name.
First published by
IBM developerWorks
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