Changable value

CΛSTΞX · 10-08-2010, 09:42 PM

hey I've little question;

PHP Code:


			
$get = $_REQUEST['NUMBER'];
$num."".$get = "blbla";

echo $num3;

// should echo blbla

I have to echo the changable value name. But its not correct. How do you think I can get it in correct way ?

Village Idiot · 10-08-2010, 09:53 PM

Quote:

Originally Posted by CΛSTΞX

hey I've little question;

PHP Code:


			
$get = $_REQUEST['NUMBER'];
$num."".$get = "blbla";

echo $num3;

// should echo blbla

I have to echo the changable value name. But its not correct. How do you think I can get it in correct way ?

What you are doing is impossible. You can not name variables like they are strings. Your closest match would be to use an array.

PHP Code:


			
$get = $_REQUEST['NUMBER'];
$num[$get] = "blbla";

echo $num[$get];

wGEric · 10-08-2010, 10:13 PM

Variable variables: http://php.net/manual/en/language.va...s.variable.php

I'm not sure if you can combine two variables like this

PHP Code:


			
${$num . $get}

But one variable works

PHP Code:


			
$var = $num . $get;
$$var

CΛSTΞX · 10-08-2010, 10:14 PM

Thanks Eric, that is interesting. I wasn't know that.

Salathe · 10-09-2010, 08:00 AM

See also: http://cowburn.info/2008/01/12/php-vars-curly-braces/

Village Idiot · 10-09-2010, 05:07 PM

Quote:

Originally Posted by Salathe

See also: http://cowburn.info/2008/01/12/php-vars-curly-braces/

Interesting, I never knew one could do that... I do know that I will never use it though.

delayedinsanity · 10-09-2010, 08:29 PM

(removed by suggestion)

Salathe · 10-10-2010, 11:34 PM

Quote:

Originally Posted by Village Idiot

Interesting, I never knew one could do that... I do know that I will never use it though.

Absolutely the right stance to take.

A rare example of curly-brace-madness being useful comes from lovely web APIs provided by big names (here's looking at you Google and Yahoo!) which provide JSON-formatted responses containing identifiers like foo$bar or foo:bar which when converted directly to stdClass properties (via json_decode) cannot be accessed with the normal syntax (e.g. $object->foo$bar), calling for something like $object->{'foo$bar'} instead.

As for actual variables names, I can't think of the last time that I used the ${...} syntax for production code outside of a double-quoted string; I'm uncertain if it has ever happened.

Quote:

Originally Posted by delayedinsanity

... I just like coming up with fictional new ways to get back ...

How about you keep this kind of stuff to yourself, next time? Thanks.

delayedinsanity · 10-10-2010, 11:58 PM

Alrighty, point taken.