Re: How to assign eval() to variable?
| From: | Stuart | Date: | Sat, 23 May 2009 13:44:47 +0000 |
| Subject: | Re: How to assign eval() to variable? | ||
| References: | 1 2 3 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-293017@lists.php.net to get a copy of this message | ||
Oops, didn't mean to hit send...
2009/5/23 Stuart <stuttle@gmail.com>:
> 2009/5/23 Afan Pasalic <afan@afan.net>:
>> short hack works like a charm!
>> :-)
>
> It may work but output buffers are relatively expensive. The eval
> function will return the value the eval'd code returns, so just stick
> a return statement at the end of the string you're eval'ing.
>
> Suggestions...
>
1) RTFM: http://uk.php.net/eval
2) If you can avoid using eval, do. It's evil and rarely the best way
to achieve something.
-Stuart
--
http://stut.net/
>> oorza2k5@gmail.com wrote:
>>>
>>> short hack, assuming your eval echo's out to the browser (which I can't
>>> see how else you'd expect something to 'return' from an eval'd
statement
>>> ob_start();
>>> eval($foo);
>>> $result = ob_get_clean();
>>>
>>> On May 23, 2009 1:46am, Afan Pasalic <afan@afan.net> wrote:
>>> > hi,
>>> >
>>> > I have on one website boxes with information, pulled from mysql. the
>>> > content can be string, php code, url of other website or url to specific
>>> > file etc.
>>> >
>>> >
>>> >
>>> > currently, I have something like this:
>>> >
>>> >
>>> >
>>> > // connect to db
>>> >
>>> > // mysql_query() to get box content and content_type
>>> >
>>> >
>>> >
>>> > switch($content_type)
>>> >
>>> > {
>>> >
>>> > case 'string':
>>> >
>>> > echo $content;
>>> >
>>> > break;
>>> >
>>> >
>>> >
>>> > case 'php_code':
>>> >
>>> > eval($content);
>>> >
>>> > break;
>>> >
>>> >
>>> >
>>> > case 'website':
>>> >
>>> > echo ''.$content.';
>>> >
>>> > break;
>>> >
>>> >
>>> >
>>> > case 'file'
>>> >
>>> > require_once($file);
>>> >
>>> > echo $file_content;
>>> >
>>> >
>>> >
>>> > // etc.
>>> >
>>> > }
>>> >
>>> >
>>> >
>>> > but, now I have to change the code to assign content to variable and the
>>> > variable will be printed later. I tried something like this:
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > switch($content_type)
>>> >
>>> > {
>>> >
>>> > case 'string':
>>> >
>>> > $record = $content;
>>> >
>>> > break;
>>> >
>>> >
>>> >
>>> > case 'php_code':
>>> >
>>> > $record = eval($content);
>>> >
>>> > break;
>>> >
>>> >
>>> >
>>> > case 'website':
>>> >
>>> > $record = ''.$content.';
>>> >
>>> > break;
>>> >
>>> >
>>> >
>>> > case 'file'
>>> >
>>> > require_once($file);
>>> >
>>> > $record = $file_content;
>>> >
>>> >
>>> >
>>> > // etc.
>>> >
>>> > }
>>> >
>>> >
>>> >
>>> > and it works - except eval() part. cant do $record = eval($content);
>>> > ?!?!?!?
>>> >
>>> >
>>> >
>>> > thanks
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > afan
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > --
>>> >
>>> > PHP General Mailing List (http://www.php.net/)
>>> >
>>> > To unsubscribe, visit: http://www.php.net/unsub.php
>>> >
>>> >
>>> >
>>
>> --
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>>
>