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When we create input box. check box, radio button etc. So this necessary to send thesecontrol value to the server. So Form tag is use to send these control value to the server.

code:-

your input box, check box etc here .

name :- name of the formaction :- write page name on which page you w ant to send values. ifyou take action blanklike action="" then values send on same page.method :- there are tw o method post and get.post send value to the server but values not show on URL.get send value to the server but values show on URL.

test1Enter Name

save this php s cript by name oftest1.php.

In this code w e use action="test1.php" then these control value send to test1.php page Wereterive these value on test1.php page and can print it. Now make another page test1.phpfor reterive these values

For reterive value ofForm tag use super global variable$_POST['controlname'] when method is post on form tag.$_GET['controlname'] when method is get on form tag.

test1

Form TagAbout HTML Form Tag

Exam ple 1:- Simple Form Tag Example

How to reter ive value of Form tag.

Example 1:- PHP script to reterive form tag value. please save this file test1.php.

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test1.php

test1

Enter Gender

test2.php

test2

isset function is very usefull when you send value to the server and reterive value.Now Look functiong of isset functionisset function is use to check variable exists or not. This return true if variable existsotherwise this return false. This is a language construct and not a function.

Now Why we use isset function and benefit ofisset function.When we send value of the server we check $_POST['controlname'] in isset function. whenwe click on submit button then this variable exits on page and w rite code inside this section.if variable exits our code run otherw ise code not run. if we are not use isse t function thencode is run without submit the page.

Untitled Document

when you click on Submit Then isset will do work.This show Text Box data withoutsubmit page echo will not pring $_post['city'] data.

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Exam ple 2:- To use of get me thod

isset()

Example 3:- PHP script to use of isset function.

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