1. Due Dec 9th simple CHAT with
AJAX PHP
MYSQL
SQL
JAVASCRIPT

2. Test on update
Select /retrieve
content
[ listen button ]
Test on update
Update DB
[on enter text]
Test on update
Check as part
of each update
CHAT_CONTENT
text
NAME
primary
PASSWORD
joe1
007
How are you..
moe2
008
Fine thanks ..
CHAT TABLE – 3 COLUMNS

3. CHAT NAME /PASSWORD
joe
007
Are you listening to me,
Moe?
CHAT NAME /PASSWORD
moe
008
Yep, I'm here joe. How are things?
PHP
SCRIPTs + DB
LISTEN TO
moe
listen
Yep, I'm here joe. How are things?
LISTEN TO
joe
listen
Are you listening to me,
Moe
BROWSER -1
BROWSER -2

4. CHAT
CREDENTIALS
/UPDATE
1. Push to DB
Use AJAX
PHP
2 SEPARATE PHP
SCRIPTS
MYSQL TABLE
CHAT
2. pull from DB
Use AJAX
Listen
to who?

5. onkeyup event => ajax [1st group of ajax functions –
ENTER YOUR NAME /PASSWORD
CONTENT BELOW TRANSMITTED AS TYPED
onkeyup event => ajax
[1st group of ajax functions –
http1 is object & functions ]
Content entered here
sent to your chat table entry in database
Content copied to database Chat
by php using SQL UPDATE
WARNING IN SPAN IF FAIL TO MAKE AN UPDATE
Check password in Update
listen
ENTER name of who to listen to
& RETRIEVE their CHAT content on
Clicking Listen button
Button click => ajax
[2nd group of ajax functions
http2 is object & functions ]
- php now uses SQL SELECT
<= Response deposited here
Chat retrieved from named person goes here

6. ENTER YOUR NAME /PASSWORD
CONTENT TRANSMITTED AS TYPED
joe
999
Keyup event => ajax behavior
Content entered here
sent to your chat table entry in database
Content to database
SQL UPDATE
This stays same
Include checking user and password in Update SQL
WARNING – CHAT NOT UPDATED – WRONG CREDENTIALS
If fail to update
-zero affected rows

7. Optional enhancement ENTER YOUR NAME /PASSWORD
CONTENT TRANSMITTED AS TYPED
onkeyup => AJAX
PHP SCRIPT
SQL update
+ password and name check
ENTERED CONTENT
ENTER VALID NAME
& RETRIEVE CHAT on listen CLICK
poll
stop
Optional enhancement
RETRIEVED CONTENT