PHP for Begineers

BYKANIKA SINGHAL3RD YEAR COMPUTER ENGINEERINGCollege of Technology, GBPUA&T

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What is PHPBasics of PHPWriting simple programs in PHPWhy use PHPMore on PHP programmingRetrieving data from the clientDesigning forms

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Hands on experience………

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BASIC CODE IN TEXT EDITOR

HOW IT LOOKS ON WEB BROWSER

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Example 1

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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

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Revision Example 1

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<?php$my_name = “kanika”;$My_name = “KANIKA”;echo “hello, $my_name”;echo “hello, $My_name”;?>

Variable.php


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Example 2

string (text) example, $name=“kanika”

integer (numeric) example, $value=100

double (numeric)ArrayObjectunknown 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


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Example 3

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<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


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Example 4(Using GET method)


<HTML><HEAD></HEAD><BODY>YOUR NAME IS :<?phpecho $user;?></BODY></HTML>

name.php


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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


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Example 5(Using POST method)


<HTML><HEAD></HEAD><BODY>YOUR NAME IS :<?phpecho $user;?></BODY></HTML>

name.php


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Example 5 continued….

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THE END

Education

PHP for Begineers