Programming Forums > Web Development and Design > PHP

Kelvoron · Aug 15th, 2007, 8:20 PM

hey guys i am playing around with php trying to get a head start as i will be having a class on it in three weeks and i was wondering how to release a veriable? meaning i have a form you input what will eventuly become a pass word right now it is dog, and when you input dog, for the time beeing it says thank you for loging in, any other time it says sorry your not in the database, the problem i am having is once you hit submit and dog is the veriable $pass it will continue to stay as $pass when you refresh it. wich is a good thing in the long run, but i need to be able to release the veriable, or log out if you will.

heres my code:

(Toggle Plain Text)

<font class="phpexample">
<form method="post">
Yourname:<input type="text" name="pass">
<input type="submit" value="submit">
</form>
<?
$pass=$_POST['pass'];
if($pass == "dog")
{
print("Thank you for loging in");
}
else{
print("sorry not in data base");
}
?>

thanks in advanced

Wizard1988 · Aug 15th, 2007, 8:33 PM

You would normally want to have the login form submit to a new page. You don't really need to release anything, just set a session variable that the user is logged in and send them to whatever page necessary.

Kelvoron · Aug 15th, 2007, 8:37 PM

okay. thanks

titaniumdecoy · Aug 15th, 2007, 10:06 PM

To answer your question, you can use the unset function. Whether the data will be automatically resubmitted when the page is refreshed is browser-depended; in my browser (Safari on Mac OS X) it is not.

Your form should have an action attribute; you can set it to the name of the current page to replicate the current behavior:

(Toggle Plain Text)

<form method="post" action="filename.php" name="nameform">

Note that your form should also have a name attribute ("nameform" in the example above) to facilitate scripting.

Also note that the <font> tag is deprecated (use <div> or <span> instead). Additionally, you should close all tags, even those that do not require separate closing tags; for example:

(Toggle Plain Text)

<input type="submit" value="submit" />

Finally, you should check whether the form has been submit before printing a failure or success message by using the isset function; similarly, you may not want to display the form if the name is successfully found in the "database".

Aug 15th, 2007, 8:20 PM	#1
Kelvoron Programmer Join Date: Aug 2007 Location: Ohio Posts: 46 Rep Power: 0	releasing a veriable? hey guys i am playing around with php trying to get a head start as i will be having a class on it in three weeks and i was wondering how to release a veriable? meaning i have a form you input what will eventuly become a pass word right now it is dog, and when you input dog, for the time beeing it says thank you for loging in, any other time it says sorry your not in the database, the problem i am having is once you hit submit and dog is the veriable $pass it will continue to stay as $pass when you refresh it. wich is a good thing in the long run, but i need to be able to release the veriable, or log out if you will. heres my code: (Toggle Plain Text) <font class="phpexample"> <form method="post"> Yourname:<input type="text" name="pass"> <input type="submit" value="submit"> </form> <? $pass=$_POST['pass']; if($pass == "dog") { print("Thank you for loging in"); } else{ print("sorry not in data base"); } ?> <font class="phpexample"> <form method="post"> Yourname:<input type="text" name="pass"> <input type="submit" value="submit"> </form> <? $pass=$_POST['pass']; if($pass == "dog") { print("Thank you for loging in"); } else{ print("sorry not in data base"); } ?> thanks in advanced __________________ Good better best, never let it rest, untill your good is better and your better is the best.

Aug 15th, 2007, 8:33 PM	#2
Wizard1988 Professional Programmer Join Date: Oct 2005 Location: Chitown Posts: 417 Rep Power: 3	You would normally want to have the login form submit to a new page. You don't really need to release anything, just set a session variable that the user is logged in and send them to whatever page necessary. __________________ JG-Webdesign

Aug 15th, 2007, 8:37 PM	#3
Kelvoron Programmer Join Date: Aug 2007 Location: Ohio Posts: 46 Rep Power: 0	okay. thanks __________________ Good better best, never let it rest, untill your good is better and your better is the best.

Aug 15th, 2007, 10:06 PM	#4
titaniumdecoy Expert Programmer Join Date: Nov 2005 Posts: 841 Rep Power: 3	To answer your question, you can use the unset function. Whether the data will be automatically resubmitted when the page is refreshed is browser-depended; in my browser (Safari on Mac OS X) it is not. Your form should have an action attribute; you can set it to the name of the current page to replicate the current behavior: (Toggle Plain Text) <form method="post" action="filename.php" name="nameform"> <form method="post" action="filename.php" name="nameform"> Note that your form should also have a name attribute ("nameform" in the example above) to facilitate scripting. Also note that the <font> tag is deprecated (use <div> or <span> instead). Additionally, you should close all tags, even those that do not require separate closing tags; for example: (Toggle Plain Text) <input type="submit" value="submit" /> <input type="submit" value="submit" /> Finally, you should check whether the form has been submit before printing a failure or success message by using the isset function; similarly, you may not want to display the form if the name is successfully found in the "database". Last edited by titaniumdecoy; Aug 15th, 2007 at 10:27 PM.

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Programming Forums > Web Development and Design > PHP

releasing a veriable?