Re: [PHP] Variable name as a variable?
Thanks, all! I will experiment with the three different solutions presented and see what best fits this application. As to the security aspect, yes, I am aware that this is a simplification and that the values must be sanitized. Have a great week. -- Dotan Cohen http://what-is-what.com http://gibberish.co.il -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Variable name as a variable?
On Mon, 5 Oct 2009 16:56:48 +0200 Dotan Cohen wrote: > I need to store a variable name as a variable. Note quite a C-style > pointer, but a way to access one variable who's name is stored in > another variable. > > As part of a spam-control measure, a certain public-facing form will > have dummy rotating text fields and a hidden field that will describe > which text field should be considered, like this: > > input type="text" name="text_1" > input type="text" name="text_2" > input type="text" name="text_3" > input type="hidden" name="real_field" value="text_2" > > As this will be a very general-purpose tool, a switch statement on the > hidden field's value would not be appropriate here. Naturally, the > situation will be much more complex and this is a non-obfuscated > generalization of the HTML side of things which should describe the > problem that I need to solve on the server side. > > Thanks in advance for any ideas. > Some reading on this if you're interested: http://us2.php.net/manual/en/language.variables.variable.php You can also access array properties using variables if you like: $foo->some_prop = 'Hi there!'; $bar = 'some_prop'; echo $foo->$bar; Regards, Torben -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Variable name as a variable?
- Original Message > From: Dotan Cohen > To: php-general. > Sent: Mon, October 5, 2009 7:56:48 AM > Subject: [PHP] Variable name as a variable? > > I need to store a variable name as a variable. Note quite a C-style > pointer, but a way to access one variable who's name is stored in > another variable. > > As part of a spam-control measure, a certain public-facing form will > have dummy rotating text fields and a hidden field that will describe > which text field should be considered, like this: > > input type="text" name="text_1" > input type="text" name="text_2" > input type="text" name="text_3" > input type="hidden" name="real_field" value="text_2" > > As this will be a very general-purpose tool, a switch statement on the > hidden field's value would not be appropriate here. Naturally, the > situation will be much more complex and this is a non-obfuscated > generalization of the HTML side of things which should describe the > problem that I need to solve on the server side. > > Thanks in advance for any ideas. > > -- > Dotan Cohen > > http://what-is-what.com > http://gibberish.co.il > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php You mean something like this? $var_name = "text_2"; echo $$var_name; // equivalent to echo $text_2; Regards, Tommy -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Variable name as a variable?
On Mon, 2009-10-05 at 16:56 +0200, Dotan Cohen wrote: > I need to store a variable name as a variable. Note quite a C-style > pointer, but a way to access one variable who's name is stored in > another variable. > > As part of a spam-control measure, a certain public-facing form will > have dummy rotating text fields and a hidden field that will describe > which text field should be considered, like this: > > input type="text" name="text_1" > input type="text" name="text_2" > input type="text" name="text_3" > input type="hidden" name="real_field" value="text_2" > > As this will be a very general-purpose tool, a switch statement on the > hidden field's value would not be appropriate here. Naturally, the > situation will be much more complex and this is a non-obfuscated > generalization of the HTML side of things which should describe the > problem that I need to solve on the server side. > > Thanks in advance for any ideas. > > -- > Dotan Cohen > > http://what-is-what.com > http://gibberish.co.il > What's wrong with this: $user_value = $_REQUEST[$_REQUEST['real_field']]; Obviously this isn't production worthy code, you'd really need to put the whole thing in a ternary if to check if the values actually exist, but this would definitely solve your problem. Thanks, Ash http://www.ashleysheridan.co.uk
