Introducing FORMS In PHP

**مبشر** · 01-08-07, 10:45 AM

Okay till now we were working on single PHP pages and there was little interaction, take the example of the multiplication table, wouldn�t it be great if the user could enter which multiplication table he wanted and then we could give him that result.

As PHP is a server side scripting language user interaction can only occur when we send some info to the server, in turn the server processes our request and sends the requested page, thus we need to post (Send) data to the server.

To illustrate I will show you an example: Let's build a multiplication table code where in the first page (ask_user.htm) we ask the user which table he wants and in the second page (table_results.php) we get that info and sends him the table.
ask_user.htm

کوڈ:

<html>
<body>
<form method=post action=table_results.php>

Enter the multiplication table number <input type=text name=table size=2>

<input type=submit>
</form>
</body></html>

What we have done in the above html page is that we have created a HTML FORM that is going to POST (send) data to the PHP file table_results.php, this file will be called by the web-server and processed after processing it will be sent to the browser.

The PHP global array $_POST['variable name'] which is a built in super global array in PHP contains all the data that is posted by a form, you just need to pass your variable name to retrieve the data that you have posted.

table_results.php

کوڈ:

<html><body>
<?php
$cnt = 1;
$table = $_POST['table'];

while($cnt != 11)
{
echo "$table x $cnt = ". $table * $cnt;
$cnt++;
}
?>
</body></html>

Analyzing the code: Enter any number in the above HTML form and press enter voila! you get the multiplication table for that, but how does the other program table_results.php know which table to process.

Remember we have posted data to the server, see this line <input type=text name=table size=2> holds the value of the table. We have named the input field as table which now become our variable that stores the info.

We retrieve the value of the table using $_POST['variable_name'] , in our case our variable that hold the value is table so we wrote the code $table=$_POST['table']; which retrieves the value and stores it in the $table variable.

**منتظمین** · 01-08-07, 10:59 AM

بہت عمدہ سبق ہے ۔ آج اس کو دہراوں گا۔

میں کچھ سوال پوچھنا چاہ رہا ہوں۔

1- سپر ارائے کیا ہوتا ہے ؟ اور اسکا کیا مقصد ہو تا ہے؟

2- اس روٹین کا کیا مطلب ہے

کوڈ:

while($cnt != 11)
{
echo "$table x $cnt = ". $table * $cnt;
$cnt++;
}

3- اپ نے echo میں ““ اور . کا استعمال کیا ہے ان کا کیا فنکشن ہوتا ہے۔

والسلام

**عرفان حیدر** · 28-12-07, 06:32 PM

سلام،
مذکورہ دھاگے کو بند کیا جارہا ہے کیوں کہ اس میں گذشتہ ایک مہینے سے کو ئی نیا مراسلہ نہیں ڈالا گیا۔
تما م مراسلے ارسال کرنے والے خواتین و حضرات کا شکریہ۔
وسلام،

01-08-07, 10:45 AM	#1
مبشر Member اجنبی تاریخ شمولیت: Jul 2007 عمر: 27 مراسلات: 75 کمائي: 415 شکریہ: 2 12 مراسلہ میں 28 بارشکریہ ادا کیا گیا	Introducing FORMS In PHP Introducing FORMS In PHP Okay till now we were working on single PHP pages and there was little interaction, take the example of the multiplication table, wouldn�t it be great if the user could enter which multiplication table he wanted and then we could give him that result. As PHP is a server side scripting language user interaction can only occur when we send some info to the server, in turn the server processes our request and sends the requested page, thus we need to post (Send) data to the server. To illustrate I will show you an example: Let's build a multiplication table code where in the first page (ask_user.htm) we ask the user which table he wants and in the second page (table_results.php) we get that info and sends him the table. ask_user.htm کوڈ: <html> <body> <form method=post action=table_results.php> Enter the multiplication table number <input type=text name=table size=2> <input type=submit> </form> </body></html> What we have done in the above html page is that we have created a HTML FORM that is going to POST (send) data to the PHP file table_results.php, this file will be called by the web-server and processed after processing it will be sent to the browser. The PHP global array $_POST['variable name'] which is a built in super global array in PHP contains all the data that is posted by a form, you just need to pass your variable name to retrieve the data that you have posted. table_results.php کوڈ: <html><body> <?php $cnt = 1; $table = $_POST['table']; while($cnt != 11) { echo "$table x $cnt = ". $table * $cnt; $cnt++; } ?> </body></html> Analyzing the code: Enter any number in the above HTML form and press enter voila! you get the multiplication table for that, but how does the other program table_results.php know which table to process. Remember we have posted data to the server, see this line <input type=text name=table size=2> holds the value of the table. We have named the input field as table which now become our variable that stores the info. We retrieve the value of the table using $_POST['variable_name'] , in our case our variable that hold the value is table so we wrote the code $table=$_POST['table']; which retrieves the value and stores it in the $table variable. Share Share this post on Digg Del.icio.us Technorati Twitter Facebook!

01-08-07, 10:59 AM	#2
منتظمین Administrator تاریخ شمولیت: May 2007 عمر: 36 مراسلات: 11,361 کمائي: 171,667 شکریہ: 9,810 7,526 مراسلہ میں 22,598 بارشکریہ ادا کیا گیا	جواب: Introducing FORMS In PHP بہت عمدہ سبق ہے ۔ آج اس کو دہراوں گا۔ میں کچھ سوال پوچھنا چاہ رہا ہوں۔ 1- سپر ارائے کیا ہوتا ہے ؟ اور اسکا کیا مقصد ہو تا ہے؟ 2- اس روٹین کا کیا مطلب ہے کوڈ: while($cnt != 11) { echo "$table x $cnt = ". $table * $cnt; $cnt++; } 3- اپ نے echo میں ““ اور . کا استعمال کیا ہے ان کا کیا فنکشن ہوتا ہے۔ والسلام Share Share this post on Digg Del.icio.us Technorati Twitter Facebook! __________________ تم سپاہی نہیں ہو پیشہ ور قاتلو!

28-12-07, 06:32 PM	#3
عرفان حیدر Senior Member تاریخ شمولیت: Dec 2007 مقام: کراچی عمر: 30 مراسلات: 2,046 کمائي: 8,260 شکریہ: 889 722 مراسلہ میں 1,442 بارشکریہ ادا کیا گیا	جواب: Introducing FORMS In PHP سلام، مذکورہ دھاگے کو بند کیا جارہا ہے کیوں کہ اس میں گذشتہ ایک مہینے سے کو ئی نیا مراسلہ نہیں ڈالا گیا۔ تما م مراسلے ارسال کرنے والے خواتین و حضرات کا شکریہ۔ وسلام، Share Share this post on Digg Del.icio.us Technorati Twitter Facebook!

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