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Hi all,
I am new to PHP and web programming.
I have a very simple question,
I have following simple code:
****************************
<?php
if (isset($submit)) {
echo "If is executed";} else {
echo "Else is executed";
?>
<HTML>
<BODY>
<FORM enctype="multipart/form-data" method="post" action="upload.php">
Upload image
Select image: <INPUT name="file" type="file">
<INPUT type="submit" name= "submit" value="submit">
</FORM></BODY>
</HTML><?php
}
?>
***********************
A form appears on the screen and when I click on submit button I should be in "If statement" and the code line
echo "If is executed"; should be executed
but instead
echo "Else is executed"; statement is executing all the time.
What I am missing so that when I click on
submit button if statement should be executed.
thanks
regards
/rsasalm
There are a couple problems with what you have above. First of all you are trying to reference a locally defined variable called $submit. Since you never defined it, it doesn't exist. You need to reference the $submit variable that was posted to the page from the form, like this:
if (isset($_POST["submit"])) {
Also, you are echo'ing text to the page before the headers have been written, so the text might not even show up depending upon the browser you use.
0 
Michael's explanation is right on...I'm just clarifying a couple of things.
If you have register_globals on, then what you have above should work ($_POST['submit'] is put into a variable named $submit). But in recent versions of PHP, it is off be default (mostly because of security considerations.)
Secondly, I think PHP will output the http headers before you echo anything. But Michael may be talking about the HTML 'header' tags (HTML, HEAD, TITLE, STYLE, etc.)
-SN
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