PHP for Begineers

BY KANIKA SINGHAL 3 RD YEAR COMPUTER ENGINEERING College of Technology, GBPUA&T 06/07/09 03:13 PM

What is PHP

Basics of PHP

Writing simple programs in PHP

Why use PHP

More on PHP programming

Retrieving data from the client

Designing forms

06/07/09 03:13 PM

Hands on experience………

06/07/09 03:13 PM

BASIC CODE IN TEXT EDITOR

HOW IT LOOKS ON WEB BROWSER

06/07/09 03:13 PM Example 1

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06/07/09 03:13 PM Web server locates instructions file Web server processes instructions to create HTML HTML stream returned to browser Browser processes HTML and displays page Client requests webpage Author writes instructions Delivering a web page 1 6 4 3 2 5

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06/07/09 03:13 PM Revision Example 1

06/07/09 03:13 PM

<?php

$my_name = “kanika”;

$My_name = “KANIKA”;

echo “hello, $my_name”;

echo “hello, $My_name”;

?>

Variable.php

06/07/09 03:13 PM Example 2

string (text) example, $name=“kanika”

integer (numeric) example, $value=100

double (numeric)

Array

Object

unknown type

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<?php

$years=2;

$rate=5;

$principal=1000;

$simple_interest= $years * $rate

* $principal ;

echo "<h2>Simple Interest is Rs.

$simple_interest/-</h2>";

?>

simple_interest.php

06/07/09 03:13 PM Example 3

06/07/09 03:13 PM <FORM> … </FORM>

Text fields <input name=“textbox_name” type=“text”>

Checkboxes <input name=“checkbox_name” type=“checkbox” value=“”>

Radio buttons <input name=“radio_name” type=“text” value=“”>

Listboxes <select name=“listbox_name[]” multiple>

<option>option1</option>

…

</select>

Passwords <input name=“textbox_name” type=“password”>

Submit and Reset buttons

<input name=“textbox_name” type=“text”>

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ACTION-tells the server which page to go to once the user has clicked a submit button on the form.

<FORM ACTION="test.php">

...

</FORM>

METHOD-controls the way that information is sent to the server. It can do this in one of two ways-GET and POST

<FORM ACTION="test.php" METHOD=GET>

<FORM ACTION="test.php" METHOD=POST>

ID, CLASS, DIR,LANGUAGE, NAME, STYLE, and TITLE

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<HTML>

<head><title>

Form page

</title></head>

<body>

<FORM METHOD=GET ACTION=“name.php">

What is your name ?

<INPUT NAME=“user” TYPE="TEXT">

<BR>

<BR>

<INPUT TYPE=SUBMIT>

</FORM>

</body>

</HTML>

Form_GET.php

06/07/09 03:13 PM Example 4(Using GET method)

<HTML>

<HEAD></HEAD>

<BODY>

YOUR NAME IS :

<?php

echo $user;

?>

</BODY>

</HTML>

name.php

06/07/09 03:13 PM Example 4 continued….

<HTML>

<head><title>

Form page

</title></head>

<body>

<FORM METHOD=POST ACTION=“name.php">

What is your name ?

<INPUT NAME=“user” TYPE="TEXT">

<BR>

<BR>

<INPUT TYPE=SUBMIT>

</FORM>

</body>

</HTML>

Form_GET.php

06/07/09 03:13 PM Example 5(Using POST method)

<HTML>

<HEAD></HEAD>

<BODY>

YOUR NAME IS :

<?php

echo $user;

?>

</BODY>

</HTML>

name.php

06/07/09 03:13 PM Example 5 continued….

06/07/09 03:13 PM

06/07/09 03:13 PM THE END

PHP for Begineers

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Notes on slide 1

2 Favorites & 1 Group