Training Help
This is a discussion on Training Help within the PHP General forums, part of the PHP Programming Forums category; I recently aquired a copy of the book PHP and Mysql web development by SAMS. I have begun reading through ...
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09-12-2003
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Training Help
I recently aquired a copy of the book PHP and Mysql web development by SAMS.
I have begun reading through it and it seems to be a very usefull book however I started doing the first exersise which is a simple HTML Processor, the HTML page is as follows: <html> <head> <title>Bob's Auto Parts - Order Results</title> </head> <body> <h1>Bob's Auto Parts</h1> <form action=processorder.php method=post> <table border=0> <tr bgcolor=#cccccc> <td width=150>Item</td> <td width=15>Quantity</td> </tr> <tr> <td>Tires</td> <td align=center><input type="text" name="tireqty" size=3 maxlength=3></td> </tr> <tr> <td>Oil</td> <td align=center><input type="text" name="oilqty" size=3 maxlength=3></td> </tr> <tr> <td>Spark Plugs</td> <td align=center><input type="text" name="sparkqty" size=3 maxlength=3></td> </tr> <tr> <td colspan=2 align=center><input type=submit value="Submit Order"></td> </tr> </table> </form> </body> </html> And the processor PHP page is: <html> <head> <title>Bob's Auto Parts - Order Results</title> </head> <body> <h1>Bob's Auto Parts</h1> <h2>Order Results</h2> <? echo "<p>Order Processed at "; echo date("H:i, "); echo "on "; echo date ("jS F"); echo "<br>"; echo "<p>Your order is as follows:"; echo "<br>"; echo $tireqty." tires<br>"; echo $oilqty." bottles of oil<br>"; echo $sparkqty." spark plugs<br>"; ?> </body> </html> I get an error???? this code is taken directly from the book..... Bob's Auto Parts Order Results Order Processed at 21:08, on 12th September Your order is as follows: Notice: Undefined variable: tireqty in c:\inetpub\wwwroot\php\processorder.php on line 16 tires Notice: Undefined variable: oilqty in c:\inetpub\wwwroot\php\processorder.php on line 17 bottles of oil Notice: Undefined variable: sparkqty in c:\inetpub\wwwroot\php\processorder.php on line 18 spark plugs Help Ryan 
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09-12-2003
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Re: [PHP] Training Help
Hi Ryan,
Sounds like register_globals is turned off on your server (this is generally a Good Thing). Rather than having all your form fields converted directly into variables - which your book is assuming, as it's how PHP used to do it - you'll need to access them via the $_POST array. Try changing this line: > echo $tireqty." tires<br>"; To this: echo $_POST["tireqty"]. " tires<br>"; Search the manual or the list archives for "register_globals" and you'll get loads of info about this. Cheers Jon
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09-12-2003
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Re: [PHP] Training Help
Thanks mate, problem kinda fixed, looks like this now...
<html> <head> <title>Bob's Auto Parts - Order Results</title> </head> <body> <h1>Bob's Auto Parts</h1> <h2>Order Results</h2> <? $tireqty = $_POST['tireqty']; $oilqty = $_POST['oilqty']; $sparkqty = $_POST['sparkqty']; echo "<p>Order Processed at "; echo date("H:i, "); echo "on "; echo date ("jS F"); echo "<br>"; echo "<p>Your order is as follows:"; echo "<br>"; echo $tireqty." tires<br>"; echo $oilqty." bottles of oil<br>"; echo $sparkqty." spark plugs<br>"; ?> </body> </html> Ryan "Jon Haworth" <jon@laughing-buddha.net> wrote in message news:008101c37920$944cee90$050a0a0a@eris... > Hi Ryan, > > Sounds like register_globals is turned off on your server (this is generally > a Good Thing). Rather than having all your form fields converted directly > into variables - which your book is assuming, as it's how PHP used to do > it - you'll need to access them via the $_POST array. > > Try changing this line: > > > echo $tireqty." tires<br>"; > > To this: > > echo $_POST["tireqty"]. " tires<br>"; > > Search the manual or the list archives for "register_globals" and you'll get > loads of info about this. > > Cheers > Jon
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09-12-2003
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Re: [PHP] Training Help
Hi Ryan,
> $tireqty = $_POST['tireqty']; > $oilqty = $_POST['oilqty']; > $sparkqty = $_POST['sparkqty']; That'll certainly fix the problem, but it kind of defeats the point of using $_POST :-) Ideally you'd clean the data at this point to make sure no-one's trying to submit anything nasty (Google on "SQL injection" for an idea of what can be done). Seeing as these are quantities, checking them via PHP's is_numeric() function would probably be a good idea, and making sure they're inside sensible ranges (between 0 and 50, say) might be worthwhile as well. Cheers Jon
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