Vars not showing up in parsed code?!?!

[alli]

Ok, so I have this function that color codes PHP text. When I run the function it works great, but there is just one problem; it doesn't echo variables.

    function parse_php($text) 
    { 

    $text = trim ($text); 

    if (empty ($text)) { 

        return; 

    } 

    if (!strpos ($text, '<?')) { 

        $text = "<?php\n\n" . $text; 

    } 

    if (!strpos ($text, '?' . '>')) { 

        $text .= "\n\n?" . ">"; 

    } 

	$text = str_replace ('<br />', '', $text);

	ob_start (); 

    @highlight_string ($text); 

    $code = ob_get_contents (); 

    ob_end_clean (); 

    return $code; 

} 

$contents = "//I'm doing php crap

$blah, $blah, $blah mysql_connect()

";

echo parse_php($contents);

I just don't know why...

[rich_d]

Hi,

Of course not - look at your code:

$contents = "//I'm doing php crap

$blah, $blah, $blah mysql_connect()

";

This is telling $contents to equal "I'm doing php crap $blah $blah" - but $blah hasn't been set to anything so is therefore empty and won't appear in your string.

Two choices - use $contents = '$blah $blah' so it doesn't parse the variable, or escape it.

Cheers,

Rich

[alli]

The $contents var was only to give an example. The data is being pulled from a database field and I'm not sure how to escape the $ symbol so it can be displayed.

thx.

[rich_d]

Just use single quotes, not double quotes. Or str_replace the $'s for \$'s.

Cheers,

Rich

[alli]

$text = str_replace('$', '\$', $text);

Like that? I placed it below the function declaration, but it's not working.

[alli]

anybody?

[rich_d]

No, like this:

	$dollar = "ice cream";
	$content = 'You owe me a $dollar!';
	echo $content;

Swap the single quotes on the 2nd line for double quotes and watch what happens.

You can use str_replace but only if the variable holding the sql output has been single quoted, otherwise it's too late by that point (variable substitution has occured).

Cheers,

Rich

[yelvington]

Look up highlight_string() in the manual.

[mook]

Ok, I've tried just about everything and I still can't get this to work. The user submits data into the database; everything is preserved, I checked. Then when the user views the data a parsehandler goes through the data and does it's thing ( like this forum does with bbcode ).

Everything is displayed properly BUT anything that is a variable. There is no other parsing done at this moment. What IS parsed comes unchanged from the database ( Blob field ).

This is what activates the parsing:

[PHP ]//I am trying to print out a friggin variable

$var = "I'm a variable!";[/ PHP]

But it only outputs this ( check file attachment ).

😕

[rich_d]

Post your code if you want help as it stands we can't offer anything but to read the advice given in this thread so far.

[mook]

I thought I did, but here is pretty much the entire process from input to output:

The user submits data into a form. The data is then processes for errorchecking. If there error stack is empty, then continue to insert into database:

	if (count ($error)) {

		return $this->template->getError ('The following errors have been detected:', 'JAVASCRIPT: history.back(-1)', 10, $error);

	} else {

		$data = array(
			'uid' => $this->user['id'],
			'sig' => addslashes ($message),
			);

		$this->adapter->update_profile ($data, 'sig');

		return $this->template->getError ('Your signature has been updated successfully, returning you to where you were.', './index.php?a=ucp&CODE=01');

	}

$this->adapter->update_profile($data, 'sig'); calls the adapter pattern which interacts between the application and dao ( creating a standard API for plugins and modifications ). The functions looks like this:

function update_profile ($data, $type)
{

	extract ($data);

	switch ($type)
	{
//extra conditionals cutout....
			case 'sig':

			return $this->dao->query ("UPDATE profiles SET sig = '{$sig}' WHERE id = '{$uid}'");

			break;

	}

}

The data is now stored in a blob field. Now, when the user wishes to edit or view thier sig, the data is pulled in the same manner:

function display_edit_sig ()
{

	return $this->template->add_edit_sig_form ($this->user);

}

Where $this->user is the current user's cached profile and $this->template is a widget-based call to a specific template section.

Here is the 'widget' for the form:

	function add_edit_sig_form ($info)
	{

	extract ($info);

	extract ($this->user);

	$data = array(
		'TEXT' => $sig
		);

	$psig = $this->parse->parse_text ($data);

	$versaCode = $this->add_versa_code ();

	$code = $this->fetchPiece ('ucp_edit_sig');

	return stripslashes (eval ($code));

}

$psig = $this->parse->parse_text ($data); ( $psig = preview sig ) parses the text and formats bb-type code.

parse_text executes the various parsing functions:

    function parse_text ($data = array( 'TEXT' => '', 'SMILIES' => 0, 'MAX_SMILIES' => 8, 'CODE' => 0, 'SIG' => 0, 'HTML' => 0)) 
    { 

	extract ($data);

	$TEXT = $this->parse_simple ($TEXT);

	$TEXT = $this->parse_links ($TEXT);

	$TEXT = nl2br ($TEXT);

	$TEXT = $this->parse_blocks ($TEXT);

    return $TEXT; 

} 

within $this->parse_blocks $this->parse_php is called:

    function parse_php($text) 
    { 

    if (empty ($text)) { 

        return; 

    } 

    if (!strpos ($text, '<' . '?')) { 

        $text = '<' . "?php\n\n" . $text; 

    } 

    if (!strpos ($text, '?' . '>')) { 

        $text .= "\n\n?" . ">"; 

    } 

	$text = str_replace ('<br />', '', $text);

	ob_start (); 

    highlight_string ($text); 

    $code = ob_get_contents (); 

    ob_end_clean (); 

    $keyword = ini_get ('highlight.keyword'); 

    $code=preg_replace ('{([\w_]+)(\s*</font>)(\s*<font\s+color="' . $keyword . '">\s*\()}m', '<a href="http://www.php.net/manual-lookup.php?pattern=$1">$1</a>$2$3', $code); 

    return $code; 

} 

This formats and colors the PHP code. I left a few functions out, namely the one that preg_replaces the code and another that formats it into a table with gutter, etc...

Well, thats pretty much it.

If you would be interested in testing this live, go here:

http://www.cyberxtreme.org/dev/vBase/

Thanks for your time!

[mook]

Ok, I'm an idiot. I REALLY need to brush up on my REGEXP skills. It was a quote issue within the regexp:

Changed:

	function parse_blocks($text)
	{
		$s[] = "#\[php\](.*?)\[/php\]#sie"; 

    $r[] = "\$this->format_php (\"\$1\")"; 

	return preg_replace ($s, $r, $text);

}

To:

	function parse_blocks($text)
	{
		$s[] = "~\[php ](.+?)\[/ php]~ise"; 

    $r[] = '$this->parse_php(\'\\1\')';

	return preg_replace ($s, $r, $text);

}

Thank you all so much for your time, I REALLY appreciate it!