Page 318 - Beginning PHP 5.3

Part III: Using PHP in Practice

Figure 10-2
H ow I t W orks
The script starts with the main decision - making logic. If the user details form was sent, it
calls storeInfo() to save the details in cookies. If the “ Forget about me! ” link was clicked, it calls
forgetInfo() to erase the cookies. If neither of those things occurred, the script calls
displayPage() to display the output to the visitor:
if ( isset( $_POST[“sendInfo”] ) ) {
storeInfo();
} elseif ( isset( $_GET[“action”] ) and $_GET[“action”] == “forget” ) {
forgetInfo();
} else {
displayPage();

}
The storeInfo() function looks for the user info fields, firstName and location , in the $_POST
array. For each field, if it is found then a corresponding cookie is sent to the browser to store the field
value. Each cookie is given an expiry time of one year from today. Finally, the function sets a
Location: header to cause the browser to reload the remember_me.php script. Note that this
reloading will cause the browser to send the recently created cookies back to the script:

function storeInfo() {
if ( isset( $_POST[“firstName”] ) ) {
setcookie( “firstName”, $_POST[“firstName”], time() + 60 * 60 * 24 * 365,
“”, “”, false, true );
}
if ( isset( $_POST[“location”] ) ) {
setcookie( “location”, $_POST[“location”], time() + 60 * 60 * 24 *
365, “”, “”, false, true );
}

header( “Location: remember_me.php” );
}

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