FI LES super global variable File uploading in PHP Storing reference of uploaded file in database

Basharat Mahmood, Department of Computer Science,CIIT,Islamabad, Pakistan.

Retrieving data from MySQL using PHP

Summary of the previous lecture

• FILES super global variable• File uploading in PHP• Storing reference of uploaded file in database• CONNECTIONS: user registration with file

upload

Outline

• Retrieving data from MySQL using PHP• CONNECTIONS: login functionality

1. Retrieving data from MySQL using PHP

• Connection with database• Execute Select SQL command• Make display structure• Write data

1.1 Connection with database

<?phpmysql_connect(“localhost”,”root”,””) or die(“Error in connection”);mysql_select_db(“testdatabase”) or die(“Error in Selection”);?>

1.2 Selecting data

• SELECT command in SQL:SELECT column-nameFROM table-nameSELECT user_NameFROM usersSELECT *FROM users

1.2 Selecting data…

• Condition selection:SELECT column-nameFROM table-nameWHERE conditionSELECT *FROM usersWHERE user_Id>4

<?phpinclude(‘connection.php’);$sql = ‘select * from users’;$result = mysql_query($sql);?>

• Counting rows:– mysql_num_rows(variable);

<?phpinclude(‘connection.php’);$sql = ‘select * from users’;$result = mysql_query($sql);$users = mysql_num_rows($result);echo “There are total ”. $users .”users found”;?>

1.3 Display structure

<table border=‘1’><tr><th> User Name</th><th> User Email</th><th> User Password</th><th> User Picture</th></tr><tr><td> </td><td> </td><td> </td><td> </td></tr></table>

1.4 Writing data

• mysql_fetch_array(result-resource);– mysql_fetch_array($result);

1.4 Writing data…

$result=

$row = mysql_fetch_array($result);

1 Ali ali@yahoo.com 123 upload/123ali.jpg

2 Umar umar@yahoo.com 123 upload/123umar.jpg

$row= 1 Ali ali@yahoo.com 123 upload/123ali.jpg

user_Id user_Name user_Email user_Password user_Picture

0 41 2 3

echo $row [1];

echo $row[‘user_Name’];

1.4 Writing data…

<table border=‘1’><tr><th> User Name</th><th> User Email</th><th> User Password</th><th> User Picture</th></tr><tr><td> <?php echo $row[1]; ?> </td><td> <?php echo $row[2]; ?> </td><td> <?php echo $row[3]; ?> </td><td> <img src= “<?php echo $row[4]; ?>”> </td></tr></table>

User Name User Email User Password User Picture

Ali ali@yahoo.com 123

1.4 Writing data…

<table border=‘1’>Heading Row<?phpwhile($rows = mysql_fetch_array($result)){?><tr><td> <?php echo $row[1]; ?> </td><td> <?php echo $row[2]; ?> </td><td> <?php echo $row[3]; ?> </td><td> <img src= “<?php echo $row[3]; ?>”> </td></tr><?php } ?></table>

User Name User Email User Password User Picture

Ali ali@yahoo.com 123

Umar umar@yahoo.com

1.5 Example

Starts a HTML page

Connection to database

Select command

Query executed

Counting number of rows

1.5 Example…

Heading row

Loop starts Keeps row

1.5 Example…

Displays name

Displays email

Displays password

Displays image Sets source

Ends loop

Ends table

1.5 Example…

Records in user’s table

Output from the table

2. CONNECTIONS: User login

• Form for user’s input• Login action page:– Connection with database– Retrieve user’s input– Select a record from user’s table with same email

and password– Count the number of row in result– If one row is selected then fetch its values and store

in session variable, otherwise send an error message on main page

2.1 CONNECTIONS: User login form

Password

Post method

2.2 CONNECTIONS: database connection

<?phpmysql_connect(“localhost”,”root”,””) or die(“Error in connection”);mysql_select_db(“testdatabase”) or die(“Error in Selection”);?>

2.3 CONNECTIONS: Retrieve user’s input

2.4 CONNECTIONS: Select record

2.5 CONNECTIONS: Redirect

No. of rows selected

Fetch user information

Register session variables

redirect

If user’s input is invalid

2.6 CONNECTIONS: user page

User profile

User’s pic User’s information

actions

2.6 CONNECTIONS: user page…

Profile div

Image div

User’s info

‘picture’

Summary

• Retrieving data from MySQL using PHP• CONNECTIONS: login page

References

• Chapter 30, “Beginning PHP and MySQL” by W. Jason Gilmore, Apress publisher, 4th edition; 2010, ISBN-13 (electronic): 978-1-4302-3115-8.

FI LES super global variable File uploading in PHP Storing reference of uploaded file in database

Documents

User's Guide - Perfection V19/V39 · Uploading Scanned Images to Evernote..... 66 Uploading Scanned Images to SugarSync ..... 68 Uploading Scanned Images to a Web Folder..... 70 Uploading

Using KPMG Central · 2020-02-24 · If you interrupt uploading a document, the document might get uploaded but in a checked out status. Also, if documents are uploaded using the

Uploading Batch Images

Uploading an activity_to_the_pil_network

Uploading contentwiziq

Uploading event

Uploading ads on

Uploading of Soundtrack

Linking Uploading Documents

Grama Volunteer - How to Apply WEB APPLICATION …...uploaded (Voter card/Ration card/Residence Certiﬁcate. (File for uploading should be less than 1MB and File Should be in PDF

Uploading HTML5 ads

Uploading your speech

SAP ONLINE PAYMENT - Carey Business School · 2016-09-09 · SAP Online Payment User Guide Storing “usiness Documents” (Uploading Invoice opies to SAP) Page 9 STORING “ USINESS

Where the documents are uploaded, the 'Income Certificate' shall also be required to be uploaded on National Scholarship Portal (NSP). In all other cases, where uploading of documents

Uploading test 17

Uploading Supporting Documents User Guide · The following screen is the additional information needed for the uploaded document. This will categorize the document that has been uploaded

DPS Self-Counseling Creating a PPM Shipment · 2017-11-14 · Uploading Documents . Once you have printed, signed and scanned your forms back into your computer, they can be uploaded

Working with uploaded photos - Cricutcontent.cricut.com/b/pdfs/design-space-manual/08e_image...Uploading photos in Cricut Design Space is easy and there are a variety of options when

Editing your listing / Uploading photos lising and Uploading Ph… · Editing your listing / Uploading photos - 1 Editing your listing / Uploading photos A guide to editing and uploading

Working with Data in ASP.NET 2.0 :: Uploading Files Introduction2016/03/10 · category. In this particular tutorial we’ll look at different techniques for storing binary data and