Menu
▾
▴
[Bobs-cvs] CVS: bobs/doc list.php,1.2,1.3
|
From: Joe Z. <jz...@us...> - 2003-07-01 05:01:47
|
Update of /cvsroot/bobs/bobs/doc
In directory sc8-pr-cvs1:/tmp/cvs-serv11259/doc
Modified Files:
list.php
Log Message:
Fix list class documentation and example to work with register_globals =
on, the default since php 4.2.0.
Index: list.php
===================================================================
RCS file: /cvsroot/bobs/bobs/doc/list.php,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- list.php 1 Sep 2002 02:23:38 -0000 1.2
+++ list.php 1 Jul 2003 05:01:43 -0000 1.3
@@ -7,20 +7,16 @@
// the path to class_list.php.
// =======================================================================
-if (!include("class_list.php")){ // the list class definition
- $thisfile = getenv("DOCUMENT_ROOT") . "$PHP_SELF";
+$PHPSELF = $_SERVER['PHP_SELF'];
+
+if (!include("inc/class_list.php")){ // the list class definition
exit("<hr>The file <b>class_list.php</b> was not found.<br>
It is needed for this document to work properly.<br>
- It should be in the same directory as this file: $thisfile<br>");
+ It should be in the same directory as this file: $PHPSELF<br>");
}
-// Uncomment the following line to turn on debug.
-$debug = TRUE;
-
// Start the session
-if(!session_is_registered("mylist")) {
- session_register("mylist", "mylist2", "mylist3", "mylist4"); // Store $mylist variable in session
-}
+session_start();
?>
<html>
@@ -70,42 +66,41 @@
</pre>
<p>
In order to reference the <em>selectlist</em> object between web pages, you must create a session.
- The variables that will be stored in the session are parameters to the
- <em>session_register()</em> function. Note: By default, php stores session variables in
- files in the <em>/tmp</em> directory.
+ The session variables will be stored in a global <em>$_SESSION</em> array.
+ Note: By default, php stores session variables in files in the <em>/tmp</em> directory.
</p>
<pre>
// Start the session
- if(!session_is_registered("mylist")) {
- session_register("mylist"); // Store $mylist variable in session
- }
+ session_start();
</pre>
<p>
You can also end the session.
</p>
<pre>
- session_unregister("mylist");
session_destroy();
</pre>
<p>
- Create the <em>selectlist</em> object and store it in a variable (<em>$mylist</em> in this case).
- Note that the variable must be also specified in the <em>session_register()</em> function.
+ Create the <em>selectlist</em> object and store it in a session
+ variable (<em>mylist</em> in this case).
</p>
<pre>
- $mylist = new selectlist("list1");
+ $_SESSION['mylist'] = new selectlist("list1");
</pre>
<p>
- You can also delete the <em>selectlist</em> object by setting the object variable
- to another value.
+ You can also delete the <em>selectlist</em> object by setting the variable
+ to another value or unsetting it.
</p>
<pre>
- $mylist = "";
+ $_SESSION['mylist'] = "";
+ or
+ unset($_SESSION['mylist']);
+
</pre>
-<form action="<?$PHP_SELF?>#section1" method="post">
+<form action="<?PHP $PHPSELF?>#section1" method="post">
<input type="submit" name="button" value="Create selectlist">
<input type="submit" name="button" value="Refresh">
<input type="submit" name="button" value="Delete selectlist">
@@ -113,31 +108,23 @@
<input type="hidden" name="section" value="1">
</form>
-<?
-if ($section == "1"){
- switch ($button){
+<?PHP
+if ($_POST['section'] == "1"){
+ switch ($_POST['button']){
case ("Create selectlist"):
- $mylist = new selectlist("list1");
+ $_SESSION['mylist'] = new selectlist("list1");
break;
case ("Delete selectlist"):
- $mylist = "";
+ unset($_SESSION['mylist']);
break;
case ("Refresh"):
break;
case ("End session"):
- session_unregister("mylist");
- session_unregister("mylist2");
- session_unregister("mylist3");
- session_unregister("mylist4");
- $mylist = "";
- $mylist2 = "";
- $mylist3 = "";
- unset($mylist4);
session_destroy();
break;
}
}
-
+$mylist = $_SESSION['mylist'];
if (get_class($mylist)){
echo "<pre>\n"; print_r($mylist); echo "</pre>\n";
} else {
@@ -158,15 +145,15 @@
function.
</p>
<pre>
- session_register("mylist"); // store list object in session
- $mylist = new selectlist("list2"); // create the list object
- $mylist->additem("one item"); // add 1 item
+ $_SESSION['mylist'] = new selectlist("list2"); // store list object in session
+ $mylist =& $_SESSION['mylist']; // create a convenient variable reference to the session variable
+ $mylist->additem("one item"); // add 1 item
$items = array("banana", "apple", "peach");
- $mylist->additem($items); // add 3 items
+ $mylist->additem($items); // add 3 items
</pre>
-<form action="<?$PHP_SELF?>#section2" method="post">
+<form action="<?PHP $PHPSELF?>#section2" method="post">
<input type="submit" name="button" value="Add 1 item">
<input type="submit" name="button" value="Add 3 items">
<input type="submit" name="button" value="Add 5 items">
@@ -174,12 +161,13 @@
<input type="hidden" name="section" value="2">
</form>
-<?
-if ($section == "2"){
- if (!get_class($mylist2)) { // create list if not exist
- $mylist2 = new selectlist("list2");
+<?PHP
+if ($_POST['section'] == "2"){
+ if (!get_class($_SESSION['mylist2'])) { // create list if not exist
+ $_SESSION['mylist2'] = new selectlist("list2");
}
- switch ($button){ // Add items to the list
+ $mylist2 =& $_SESSION['mylist2']; // create convenient reference
+ switch ($_POST['button']){ // Add items to the list
case ("Add 1 item"):
$mylist2->additem("one item");
break;
@@ -217,8 +205,9 @@
table within a form. Just echo the output of <em>gethtml()</em>.
</p>
<pre>
- session_register("mylist"); // store list object in session
- $mylist = new selectlist("list3"); // Create the selectlist object
+ $_SESSION['mylist'] = new selectlist("list");
+ // Create and store list object in session
+ $mylist =& $_SESSION['mylist']; // create convenient reference
$mylist->setadd(); // Show the "Add" button
$mylist->setchange(); // Show the "Change" button
$mylist->setdelete(); // Show the "Delete" button
@@ -240,18 +229,19 @@
// 1 array of values
$mylist->additem("Santana"); // A single value
- $html = $mylist->gethtml($PHP_SELF); // Generate the html
+ $html = $mylist->gethtml($_SERVER['PHPSELF']); // Generate the html
echo "$html"; // Output the html
</pre>
-<form action="<?$PHP_SELF?>#section3" method="post">
+<form action="<?PHP $PHPSELF?>#section3" method="post">
<input type="submit" name="button" value="Show html code">
<input type="hidden" name="section" value="3">
</form>
-<?
-if (!get_class($mylist3)) { // Create list if not exist
- $mylist3 = new selectlist("list3");
+<?PHP
+if (!get_class($_SESSION['mylist3'])) { // Create list if not exist
+ $_SESSION['mylist3'] = new selectlist("list3");
+ $mylist3 =& $_SESSION['mylist3'];
$mylist3->setadd(); // Show the "Add" button
$mylist3->setchange(); // Show the "Change" button
$mylist3->setdelete(); // Show the "Delete" button
@@ -271,11 +261,12 @@
$mylist3->additem(array("Fontana", "nirvana"));
$mylist3->additem("Santana");
}
-$url = "$PHP_SELF" . "#section3";
+$url = "$PHPSELF" . "#section3";
+$mylist3 =& $_SESSION['mylist3'];
$html = $mylist3->gethtml($url); // Generate the html
-if ($section == "3"){
- switch ($button){ // "Show html code" button pressed
+if ($_POST['section'] == "3"){
+ switch ($_POST['button']){ // "Show html code" button pressed
case ("Show html code"):
$htmlcode = htmlspecialchars($html);
echo "\n<pre>\n";
@@ -302,10 +293,10 @@
Functions are provided to process the information from the list form.
Briefly, they are:
<pre>
- $selectlist['name'] Hidden form field containg the list name.
- getname Get the name of the list.
- getaction Get the value of the button pressed.
- getvalue Get the values of the selected list items.
+ $_POST['selectlist']['name'] Hidden form field containg the list name.
+ getname Get the name of the list.
+ getaction Get the value of the button pressed.
+ getvalue Get the values of the selected list items.
</pre>
All the list information is contained in an array named
<em>selectlist[].</em> by passing the <em>selectlist[]</em> array
@@ -326,6 +317,8 @@
<pre>
This is the code this example uses to add the items to the list when you click "Add".
+ $selectlist =& $_POST['selectlist']; // Create local references for convenience
+ $mylist =& $_SESSION['mylist'];
if ($selectlist['name'] == 'list4'){ // if mylist4 object exists
switch ($mylist->getaction($selectlist)){ // switch is "action" button
case ("Add"): // If "Add" button pressed
@@ -339,18 +332,20 @@
}
</pre>
-<?
-if ($selectlist['name'] == 'list4'){ // if mylist4 is the active list
- switch ($mylist4->getaction($selectlist)){
+<?PHP
+if ($_POST['selectlist']['name'] == 'list4'){ // if mylist4 is the active list
+ $mylist4 =& $_SESSION['mylist4']; // Reference with local variable
+ switch ($mylist4->getaction($_POST['selectlist'])){
case ("Add"):
- $value = $mylist4->getvalue($selectlist);
+ $value = $mylist4->getvalue($_POST['selectlist']);
$mylist4->additem($value[0]);
break;
}
}
-if (!get_class($mylist4)) {
- $mylist4 = new selectlist("list4"); // Create list if not exist
+if (!get_class($_SESSION['mylist4'])) {
+ $_SESSION['mylist4'] = new selectlist("list4"); // Create list if not exist
+ $mylist4 =& $_SESSION['mylist4']; // Reference with local variable
$mylist4->setadd(); // Show the "Add" button
$mylist4->setchange(); // Show the "Change" button
$mylist4->setdelete(); // Show the "Delete" button
@@ -366,7 +361,9 @@
$mylist4->additem("Montana", "The state of Montana");
$mylist4->additem(array("red planet", "green martians", "blue sea", "outer space"));
}
-$url = "$PHP_SELF" . "#section4";
+$mylist4 =& $_SESSION['mylist4']; // Reference with local variable
+$selectlist = $_POST['selectlist']; // Reference with local variable
+$url = "$PHPSELF" . "#section4";
$html = $mylist4->gethtml($url); // Generate the html
// table will contain list form and output of functions
@@ -619,7 +616,7 @@
<hr>
<pre>
-string <b>gethtml</b> ( string $PHP_SELF )
+string <b>gethtml</b> ( string $_SERVER['PHPSELF'] )
<b>Description</b>
@@ -627,9 +624,10 @@
<b>Parameters</b>
- $PHP_SELF Required for the form "action".
+ $_SERVER['PHPSELF']
+ Required for the form "action".
You can substitute the web page url another way,
- but using $PHP_SELF is easy.
+ but using $_SERVER['PHPSELF'] is easy.
<b>Returns</b>
@@ -697,4 +695,19 @@
</body>
</html>
+
+<?php
+//---------------------------------------------------------------------------
+// Functions
+//---------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------
+// Print a variable for debug
+function dump($var, $text = ""){
+ echo "\n<pre>*********************************************\n";
+ echo "$text \n";
+ var_dump($var);
+ echo "\n</pre>*********************************************\n";
+}
+?>
|
