Using $PHP_SELF & isset funtion

Newtophp4

Hello everyone,

I wanted to see if anyone can help. I want to create a web page form that submits to itself, and make a php program use the isset function and the PHP_SELF.

ex. i will use the isset function to tell when a form submission has occured, and if a form submission has not occured, make the program display a form asking for the user's first and last name (but not the answer), and if a from submission has occured, make the program display the answer ( first & last name) but not the form.
I'm trying to use PHP_SELF as a variable to make the form submit back to itself.
this is what i have done so far
This is the web page & php code,
<html>
<head></head>
<body>

First Name
<input name = "FirstName" type="text">

Last Name
<input name = "Lname" type="text">

</html>
<html>

<?php

if (isset(submit)){
echo " my first name is $GET[FirstName] and Last name is $GET[Lname]";
} elseif (isset(!submit)){
$PHP_SELF="http://localhost/MyEx/think.html";
}

</form>
</body>
</html>

laserlight

Consider this example:

<?php
if (isset($_POST['randomtext'])) {
	echo "You wrote some random text, namely \""
		. htmlspecialchars(stripslashes($_POST['randomtext'])) . "\"";
} else {
?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input type="text" name="randomtext">
<input type="submit">
</form>
<?php
}
?>

Newtophp4

Thank you, 😃

One quick question. Your code

echo "You wrote some random text, namely \""
. htmlspecialchars(stripslashes($_POST['randomtext']
)) . "\"";

What does the "htmlspecialchars(stripslashes" actually do?

also if your up for any chess please let me know.

Thanks

Newtophp4

I wanted to show you my code. This is whay i did and was playing with your code

echo "your first name is \"".
htmlspecialchars(stripslashes($name
)). "\"";

<?php
$name= $POST['fname'];
$lname= $POST['lname'];

if (isset($name)){

echo "your first name is \"".
htmlspecialchars(stripslashes($name
)). "\"";

echo "your last name is \"".
htmlspecialchars(stripslashes($lname

)).	"\"";

} else {

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
First name
<input type="text" name="fname">
<input type="text" name="lname">
<input type="submit">
</form>
<?php
}
?>
why can't it not be
echo "your first name is $name and last name is $lname"
thanks

rehfeld

Originally posted by Newtophp4

why can't it not be
echo "your first name is $name and last name is $lname"
thanks

it could if you want. you could always try it.

to find out what htmlspecialchars and stripslashes does, read the manual. its not hard and is usually the first thing you should do when you have a question.

reading the user comments as well is very helpfull usually.

http://www.php.net/htmlspecialchars
http://www.php.net/stripslashes

notice how the urls are:
http://www.php.net/function_name

it makes it very easy to look things up

Newtophp4

thanks for the hint

laserlight

also if your up for any chess please let me know.

Sure 🙂

This is whay i did and was playing with your code

You should use isset() before using an incoming variable.

In your code, you used $_POST['fname'] before checking using [man]isset/man or [man]empty/man that it was set/empty.
You should have used isset() here, instead of on $name later.