Solved

URGENT, vision_to_exe function

Posted on 2006-07-16
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Last Modified: 2012-06-21
I have developed a function to let call, execute php functions within the text content ...
The problem is i can use it or call it just once, if i call it two or more times it doesn't work ...
<?
//======================================================
    function VISION_TO_EXE ($function_name = "", $sender = "")
    {
    // by www.vision.to
    //ini_set('display_errors', '0');
    $result = true;
/*
You can use this to filter what functions can be executed ...
if(eregi("vision_to",$function_name) &&
$function_name && function_exists($function_name) &&
 strtolower($function_name) != "vision_to_exe")
*/
    //{
    if($function_name && function_exists($function_name) && strtoupper($function_name) != "VISION_TO_EXE")
    {
    //if(is_array($sender))
    if(isset($sender))
    {
    $result = call_user_func_array($function_name, array($sender));
    }
    else
    {
    $result = call_user_func($function_name);        
    }
    //ini_set('display_errors', '1');
    return $result;
    }
    else
    {
    return "<span style=\"color:#ff0000;\"> Vision.To CMS :Error :Function :
<strong>".$function_name."</strong> Does not exist or is not allowed! </span>";
    }
    //ini_set('display_errors', '1');  
    }
//Usage: $output = preg_replace("/[exe=([^>]*)]([^>]*)[/exe]/mie","''.VISION_TO_EXE('$1','$2').''",$output);
//======================================================
?>

I thin the problem is in :
$output = preg_replace("/[exe=([^>]*)]([^>]*)[/exe]/mie","''.VISION_TO_EXE('$1','$2').''",$output);

more info:
http://www.vision.to/CMS/Home/index.php?pid=276
Sorry these are my last points, i have to earn more :-(

This question should be in PHP ...

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Question by:feha
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24 Comments
 
LVL 17

Expert Comment

by:BogoJoker
Comment Utility
Try escaping open and closing brackets in your Regex.
"/\[exe=([^>]*)\]([^>]*)\[/exe\]/mie"

Also may I ask why your code between [exe] and [/exe] can be any character but > symbol?
You could change [^>] to allow [a-z0-9,_ ] letters, numbers, spaces, commas, and underscores.

Joe P
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Expert Comment

by:BogoJoker
Comment Utility
Also make sure that you are not too greedy with the [^>]*  That means that even a bracket is included in that so if you had:

[exe]param1, param2[/exe] blah blah [exe]param1, param2, param3[/exe]
You might be replacing ALL OF IT if the regex is too greedy.

To modify yours I would do this:
"/\[exe=([^>]*)?\]([^>]*)?\[/exe\]/mie"
Mine would not need that modification since when a bracket appears it breaks out of the a-z0-9,_ requirements:
"/\[exe=([a-z0-9,_ ]*)\]([a-z0-9,_ ]*)\[/exe\]/mie"
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Author Comment

by:feha
Comment Utility
Hi Joe P and BogoJoker, thank you,
your both ansers are right ...

[exe=function_name](parameters)[/exe]

how could i modify regex to use it this way ?
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by:feha
Comment Utility
I tried "/\[exe=([a-z0-9,_ ]*)\]([a-z0-9,_ ]*)\[/exe\]/mie" but i get this error:
Warning: preg_replace(): Unknown modifier '\' in c:\inetpub\wwwroot\php4\CMS_UNIVERSE\Functions\bbcode_func.php on line 96

thats the line for regex
0
 
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by:feha
Comment Utility
remmoved the error
$content = preg_replace("/\[exe=([a-z0-9,_ ]*)\]([a-z0-9,_ ]*)\[\/exe\]/mie","''.VISION_TO_EXE('$1','$2').''",$content);

but this does not work ...
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by:feha
Comment Utility
I mean it does not work at all ...
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LVL 17

Expert Comment

by:BogoJoker
Comment Utility
Could you show an example of what $content is?  Maybe echo $content; and paste the result here.
I noticed that I forgot to escape the / in /exe, you fixed the problem on your own. =)
Also did you try keeping the [^>]?

Joe P (I am BogoJoker) =)
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Author Comment

by:feha
Comment Utility
this is what i use now:
$content = preg_replace("/\[exe=([a-z0-9,_ ]*)\]([a-z0-9,_ ]*)\[\/exe\]/mie","''.VISION_TO_EXE('$1','$2').''",$content);

and content to be parsed:

Executing the functions from content:
[code]
Some text here ....
[exe =my_function_name]parameter1,prameter2,parameter3[/ exe]
Another text here ...
[/code]
LIVE TEST:
[code]  [exe =date]Y-m-d[/ exe] [/code]
Date : [exe=date]Y-m-d[/exe]

Problems:
This function can only be called once from the same content.
If you have any idea why, please use this comment's section.
Thank You

This is not parsing at all ...
see result at the bottom of content
http://www.vision.to/CMS/Home/index.php?pid=276

Date : [exe=date]Y-m-d[/exe]
Should echo date ... id does with my orignal regex ...


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Expert Comment

by:BogoJoker
Comment Utility
Oh. well Then try this:
$content = preg_replace("/\[exe=([^\]])*\]([^\]]*)\[\/exe\]/mie","''.VISION_TO_EXE('$1','$2').''",$content);

That matches both [exe] blocks in this:

[code]  [exe=date]Y-m-d[/exe] [/code]
Date : [exe=date]Y-m-d[/exe]

Notice that you cannot have a space between exe and = but you can have spaces after the =.  Also same with [/ exe] should have no spaces.

Also sorry it took so long for me to post this.  I had this code about 2 hours ago but I lost Wireless Internet Temporarily.
Joe P
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by:feha
Comment Utility
[code]  [exe =date]Y-m-d[/ exe] [/code]

there are spaces just to show code not to execute :-)
in order to present code i must make some solution
example putting [code]  [exe*=date]Y-m-d[/*exe] [/code] than replace them with '' :-)
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by:feha
Comment Utility
$output = preg_replace("/[exe=([^>]*)]([^>]*)[/exe]/mie","''.VISION_TO_EXE('$1','$2').''",$output);

gives Date : Vision.To CMS :Error :Function : e Does not exist or is not allowed!

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Expert Comment

by:BogoJoker
Comment Utility
Well yes that should fail.  Because that one does not have the ? marks.

1) $output = preg_replace("/[exe=([^>]*?)]([^>]*?)[/exe]/mie","''.VISION_TO_EXE('$1','$2').''",$output);
should work.  (as long as the name or the params dont have the '>' symbol)

2) $output = preg_replace("/\[exe=([^\]])*\]([^\]]*)\[\/exe\]/mie","''.VISION_TO_EXE('$1','$2').''",$content);
should work.

Joe P
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Expert Comment

by:BogoJoker
Comment Utility
Correction to number 1, I copied and Pasted what you wrote which had other bugs:
1) $output = preg_replace("/\[exe=([^>]*?)\]([^>]*?)\[\/exe\]/mie","''.VISION_TO_EXE('$1','$2').''",$output);
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by:feha
Comment Utility
Sorry none of them works , no parsing ...
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Expert Comment

by:BogoJoker
Comment Utility
Hmm.  Then I really have no idea.  In My regex tester it matches the blocks of [exe] perfectly.  I really don't know why it doesn't work there.

Joe P
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by:feha
Comment Utility
i get Warning: preg_replace(): Unknown modifier ']'
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by:feha
Comment Utility
the original works in multiple $content = preg_replace("/\[exe=([^>]*)\]([^>]*)\[\/exe]/mie","''.VISION_TO_EXE('$1','$2').''",$content);
called several times works ok
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Accepted Solution

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BogoJoker earned 65 total points
Comment Utility
That means you did not copy and paste the exact regex.
"/\[exe=([^>]*?)\]([^>]*?)\[\/exe\]/mie"

And for that matter why do you need the /mie modifiers?  Try just:
"/\[exe=([^>]*?)\]([^>]*?)\[\/exe\]/i"
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by:feha
Comment Utility
how can i modify
$content = preg_replace("/\[exe=([^>]*)\]([^>]*)\[\/exe]/mie","''.VISION_TO_EXE('$1','$2').''",$content);

to use parameters as [exe=myfunction]('1','2','3')[/exe]  looks more natural ...
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by:feha
Comment Utility
Just i wont work needs to be mie  or ise else will not execute function VISION_TO_EXE ?!
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Expert Comment

by:BogoJoker
Comment Utility
If you want: (assuming 1, 2, and 3 are the parameters)
[exe=myfunction]('1','2','3')[/exe]

// Find the content
$content = preg_replace("/\[exe=([^>]*?)\]\(([^>]*?)\)\[\/exe\]/i","''.VISION_TO_EXE('$1','$params').''",$content);

// Once you have your params you would do something like:
$params = explode(',', $theInputs);
// So $params[0] will be '1'
// And $params[1] will be '2'


The regex is very complex because the (, ), [, ], and / symbols all have a meaning already in regular expressions.  That means in the regex you want if you really want one of those characters to appear you have to escape it.  Gets very teadious.

Joe P
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by:feha
Comment Utility
Thanks but i have already in my funcion
$result = call_user_func_array($function_name, array($sender));

this works with unlimited parameters ...

i don't like :$params = explode(',', $theInputs);

anyway it works great as is thanks a lot for your help :-)
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by:BogoJoker
Comment Utility
Sure no problem =)
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by:feha
Comment Utility
Here is working online

http://www.vision.to/CMS/Home/index.php?pid=276

and credits to you :-)

at the bottom there is Live execution ...
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