The book example works fine. Farther down this reply is a workaround for the example with register_globals turned off.
Here's the code with register_globals On:
************************************************** *******************
<?
// cookie_test.php
// assumes register_globals is on
// test for post variables and set the cookie data accordingly
if ($type_sel) setcookie ("font[type]", $type_sel, time()+3600);
if ($size_sel) setcookie ("font[size]", $size_sel, time()+3600);
// define options available
$type = array("arial", "helvetica", "sans-serif", "courier");
$size = array( "1","2","3","4","5","6","7");
echo "<html><head><title>Cookie Test</title></head><body><div align = 'center'>";
// send out a couple listboxes to get the user's preference
echo "<form method=post>";
echo "What font type would you like to use? ";
echo "<select name = 'type_sel'>";
echo "<option selected value =''>default</option>";
foreach ($type as $var) echo "<option>$var</option>";
echo "</select><br><br>";
echo "<br>What font size would you like to use? ";
echo "<select name = 'size_sel'>";
echo "<option selected value =''>default</option>";
foreach ($size as $var) echo "<option>$var</option>";
echo "</select><br><br>";
echo "<input type=submit>";
echo "</form>";
// echo some information and format it using the choices selected,
// but bring in the two choices first
echo "<b>Your cookies say:</b><br>";
echo "";
echo "\$font[type] = $font[type]<br>";
echo "\$font[size] = $font[size]<br>";
echo " <br>";
echo "<b>Your form variables say:</b><br>";
echo "";
echo "\$type_sel = $type_sel<br>";
echo "\$size_sel = $size_sel<br>";
echo "";
echo "</div></body></html>";
?>
Here's the ('one workaround') code with register_globals Off:
************************************************** *******************
<?
$type_sel = $_POST[type_sel];
$size_sel = $_POST[size_sel];
$_SESSION[type_sel] = $type_sel; // super global array assignment
$_SESSION[size_sel] = $size_sel;
if ($_SESSION[type_sel]) setcookie ("font_type", $type_sel, time()+3600);
if ($_SESSION[size_sel]) setcookie ("font_size", $size_sel, time()+3600);
?>
<?
/* cookie_test.php
With register globals turned off, either the cookies won't accept an array, or accessing
an array from a cookie bombs (ie using $HTTP_COOKIE_VARS[font[size]]
if session_start is used or we use the session register function, we get this error:
-----------------------------------------------------------------------------------------
CGI Error
The specified CGI application misbehaved by not returning a complete set of HTTP headers.
The headers it did return are: (nothing was displayed...)
-----------------------------------------------------------------------------------------
*/
// define options available
$type = array("arial", "helvetica", "sans-serif", "courier");
$size = array( "1","2","3","4","5","6","7");
echo "<html><head><title>Cookie Test</title></head><body><div align = 'center'>";
// send out a couple listboxes to get the user's preference
echo "<form action=$PHP_SELF? method=post>";
echo "What font type would you like to use? ";
echo "<select name = 'type_sel'>";
echo "<option selected value =''>default</option>";
foreach ($type as $var) echo "<option>$var</option>";
echo "</select><br>";
echo "<br>What font size would you like to use? ";
echo "<select name = 'size_sel'>";
echo "<option selected value =''>default</option>";
foreach ($size as $var) echo "<option>$var</option>";
echo "</select><br>";
echo "<input type=submit>";
echo "</form>";
// echo some information and format it using the choices selected
echo "<b>Your cookies say:</b><br>";
$font_type = $HTTP_COOKIE_VARS[font_type];// without this asignment, cookie doesn't come in.
$font_size = $HTTP_COOKIE_VARS[font_size];// ditto...
echo "";
echo "\$font_type = $font_type<br>";
echo "\$font_size = $font_size<br>";
echo " <br>";
echo "<b>Your form variables say:</b><br>";
echo "";
echo "\$type_sel = $type_sel<br>";
echo "\$size_sel = $size_sel<br>";
echo "";
echo "</div></body></html>";
?>
Good Luck,
Oregon
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