php?id

[undertaker]

How to achieve and use .php?id= ?

I cant find any explanation on google. If i type that in, i only find all the pages that use that.

 

I assume this is ment to achieve different data on same page.

 

for example .php?id=20 , .php?id=something

 

thanks

[wildteen88]

The text that comes after the question make in the url is referred to as the query string. It is up to you what you set in the query string in order for your php script to function. For example you're making a news script. You may code this script so it requires an id variable to be passed in the query string to grab a news entry within a database that is associated with that id.

[QuickOldCar]

This would be achieved by using  GET in a form or simply assigning a variable to a GET value from the address bar url. With or without a form does not matter. Try changing the value in just the url to see.

 

A simple example:

<?php
$id = mysql_real_escape_string($_GET['id']);
?>

<form name="input" action="" method="get">
ID: <input type="text" name="id" value="<?php echo $id;?>"/>
<input type="submit" value="Submit" />
</form> 

<?php
if(!isset($_GET['id']) OR $id == "") {
echo "Please insert a value";
} else {
echo "The id is $id <br />";
}
?>

 

For some tutorials on forms along with GET,POST and so on.

http://www.w3schools.com/html/html_forms.asp

http://www.tizag.com/phpT/postget.php

 

[Drongo_III]

Hi Undertaker

 

I'm new to php and I came across this same thing a few weeks ago.

 

The explanation of it is well covered in the post above.

 

One thing worth noting (if you don't already know) is that you can access query strings by using the $GET array.

 

Just thought that was worth mentioning as it wasn't obvious to me...or maybe I'm just slow!

 

Drongo

[undertaker]

awesome

Thanks everyone for help Now i finally know