WideBlade Posted November 5, 2010 Share Posted November 5, 2010 i'm trying to access the data here: file.html <html> <head> <title>Online Marketing Calculators</title> </head> <body> <center> <h1>Online Marketing Calculators</h1> <h4> ROI Caclulator</h4> <form action="calculators.php" method="post"> <p>Total Cost : <input type="text" name="cost"> Total Income: <input type="text" name="income"></p> <input type="submit" value="submit"> </form> </center> </body> </html> file.php <?php if(isset($_REQUEST['cost'])) { echo $_REQUEST['cost']; } else { echo "Please Enter Cost"; } ?> And it's not working. Any Ideas? Quote Link to comment Share on other sites More sharing options...
AbraCadaver Posted November 5, 2010 Share Posted November 5, 2010 Your form action is form action="calculators.php" and your PHP file is file.php? One of these things is not like the other, one of these things... Quote Link to comment Share on other sites More sharing options...
rwwd Posted November 5, 2010 Share Posted November 5, 2010 <?php if(isset($_POST['cost']) && !empty($_POST['cost'])){ echo $_POST['cost']; } else{ echo "Please Enter Cost"; exit; } ?> Try that, don't use $_REQUEST all sorts of issues there. And ensure that the file name you refer to in the action matches the file your editing, and that it is in the same directory. Rw Quote Link to comment Share on other sites More sharing options...
WideBlade Posted November 5, 2010 Author Share Posted November 5, 2010 Thanks a lot RW! Works like a charm One quesiton though: why do i have to check if ti is set and if it is empty? Shouldn't one of them be enough to check if the user submitted something or not? Quote Link to comment Share on other sites More sharing options...
BlueSkyIS Posted November 5, 2010 Share Posted November 5, 2010 not set is not the same as empty. if you check to see if the variable is empty and it is not set, you'll get a warning. therefore, it is good practice to make sure a variable is set before doing any other comparison or operation on that variable: if (isset($_POST['somevariable']) && $_POST['somevariable'] == 123) { // do something } Quote Link to comment Share on other sites More sharing options...
rwwd Posted November 5, 2010 Share Posted November 5, 2010 Thanks a lot RW! Works like a charm One quesiton though: why do i have to check if ti is set and if it is empty? Shouldn't one of them be enough to check if the user submitted something or not? Right, glad that got you started. Now you need to 'catch' the form being submitted the correct way:- <?php //check that the form has been submitted via the submit button if(isset($_POST['submit']) && !empty($_POST['submit'])){ //success, now you can clean and assign the $_POST data for use in your script echo $_POST['cost']; } else{ //this is the error handler, usually best to have a header() call so that you can redirect back to the form echo "Please Enter Cost"; exit; } ?> But yes, check that the var exists/has state, then check to see if contains anything, you can go more in depth than that, but for this excerpt, this will do the task. Rw Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.