[Hamed]

Hello
I want to add conditions into my template system.All templates stores in database (Like VB and MyBB) and I get it with this function

PHP Code:

    public function get($name, $templatename)

    {

        global $db;

        if($this->check($name, $templatename))

        {

            $query = $db->read("SELECT * FROM $templatename WHERE temname='$name' LIMIT 1");

            $tem = $db->fetch($query);

            $code = $tem['codes'];

            $name = $tem['temname'];

            $code = "<!-- start: $name -->\n$code\n<!-- end: $name -->";

            $code = str_replace("\\'", "'", addslashes($code));

            return $code;

        }

        else

        {

            return false;

        }

    } 

Note $this->check($name, $templatename) check that template exit.
Now I want to make conditions in template for example

Code:

{if $loginset}Hello user.
{else}
Hello visitor.
{/if}
or

{if $loginset == '0' || $loginset != '1'}
Hello User.
{else}
Hello Visitor
{/if}

and is it possible that I get LOOP in my template system?

[Nico]

This is very complex, and I'm pretty sure no one will take the time to do this for you.

But you can use Smarty.
www.smarty.net/template.resources

[Hamed]

I think I can do it with preg_replace();
But my problem is one thing and it is my class I have two way for this job
1-Use it in get() function
2-Use other function to do this
Which one is better and faster?

I have one more question is it possible that I add sth (e.g: other template or var) to start or end of a template or var (ESP:var)?

[Nico]

Yes you can do it with preg_replace(), but it's still a complex task. The if/else thing isn't too complicated, you could do it like this:

PHP Code:

$foo = true;

$text = '

    This is an example...

    

    {if $foo}

        foo is true!

    {else}

        foo is false!

    {/if}

    

    This is the end.';



$text = preg_replace('~\{if ([^\}]+)\}(.*?)((:?\{else\})(.*?))?\{/if\}~sie', '($1 ? "$2" : ("$5" ? "$5" : null))', $text); 

... but the loops will be more difficult.

Which one is better and faster?

Well you're only providing your own example. But I think the "check" is redundant. I'm guessing it queries the database to see if it's there? So you're querying the database twice for the same thing?

Why not just:

PHP Code:

public function get($name, $templatename)

{

    global $db;    

    $query = $db->read("SELECT * FROM $templatename WHERE temname='$name' LIMIT 1");



    if (!$tem = $db->fetch($query))

    {

        return false;

    }

    

    $code = $tem['codes'];

    $name = $tem['temname'];

    $code = "<!-- start: $name -->\n$code\n<!-- end: $name -->";

    $code = str_replace("\\'", "'", addslashes($code));

    

    return $code;

} 

...?

I have one more question is it possible that I add sth (e.g: other template or var) to start or end of a template or var (ESP:var)?

I have no idea what you just said. Do you mean you want to merge templates?!


But anyway, why don't you just use Smarty? It does already what you want to do.

[Hamed]

Thanks about your help.

[Hamed]

I get new problem
As I told you I want to add other template to start or end of the other one I make two function for this job look

PHP Code:

    public function addstart($tname, $whatadd)
    {
        $wanted_codes = $this->get($whatadd, 'theme');
        eval('$wanted_codes  = "' . $wanted_codes . '";');
        $tname = $wanted_codes.$tname;
    }
    public function addend($tname, $whatadd)
    {
        $wanted_codes = $this->get($whatadd, 'theme');
        eval('$wanted_codes  = "' . $wanted_codes . '";');
        $tname = $tname.$wanted_codes;
    } 

But they do not work
This is simple usage

PHP Code:

    eval('$page  = "' . $tem->get('register',$MyTheme) . '";');
    eval('$index  = "' . $tem->get('index',$MyTheme) . '";');
    $tem->addend($page, 'register');
    echo $index; 

One impotant thing I can not change vars with running functions how can I do this jobs.

[Nico]

Because these functions add the templates to variables in the scope of the function. They're not returning or doing anything outside of it.

Try working with references.

PHP Code:

public function addend(&$tname, $whatadd) 

... note the ampersand sign.

[Hamed]

Thanks about this code it works well but it has one problem when I use ' or " in my conditions I will get

Code:

Warning: Unexpected character in input: ''' (ASCII=39) state=1 in C:\xampp\htdocs\Rose\inc\template.class.php(34) : regexp code on line 1

is there any way to slove it or no I can not use ' or "
and one more thing when I use two vars in condition, condetion become ture although it is false.

PHP Code:

$code = preg_replace("~\{if ([^\}]+)\}(.*?)((:?\{else\})(.*?))?\{/if\}~sie", '($1 ? "$2" : ("$5" ? "$5" : null))', $code); 

[Hamed]

Yes addend function won't work

[Nico]

Wrap the condition in parenthesis. This works for me:

PHP Code:

{if ($foo == true OR $bar == true)}