building a php parser??

[levans]

Here is a bit of code i have..

<?php
    if (!($fp = fopen("file.txt", "r")))  

        exit("Unable to open the input file.");
    while (!feof($fp))  

    {  

        $buffer = fgets($fp, 1024);  

        print "$buffer<br>\n";  

    }
    fclose($fp);
?>

and my markup language looks something like :

------------file.txt-----------------------------
<course> CSCI 1101 </course>

<weight> 30% </weight>



<question> Question 1

	<answer> Answer 1 </answer>
	<answer> Answer 1 </answer>
	<answer> Answer 1 </answer>
	<answer> Answer 1 </answer>

</question>

Im trying to parse these tags into real HTML but teh buffer above doesnt hold any of the tags, just the content between them like "Answer 1" or "30%".

Am I doing this the wrong way, is there an easier way or im i forgetting something.

Thanks a lot..

[drew010]

change
print "$buffer<br>\n";
to
print htmlspecialchars($buffer) . "<br>\n";

[levans]

thanks a lot!

Now I was look through the string functions on php.net and im trying to figure out away to split the string into tokens but have the tokens split into the tags..

<thetitile> some title </thetitle>

would be 3 tokens:

1.<thetitle>
2. some content
3. </thetitle>

that way I could parse them into HTML...but I would prefer not to have "some content" as 2 tokens but have it as one..is there a function to tokenize these tags or am I going to have to write my own? thx

[Weedpacket]

With a bit of tweaking to your format (adding a document-level tag), you might be able to use any of the various xml-processing functions that PHP provides. Other than that, using preg_split() could be used to break the string into an array of strings (basically, immediately before '<' and immediately after '>').

[levans]

EDIT: i was looking at the code and could it be because in the string there is a '/' because it gets in the if(<thetitle>) but not the if(</thetitle>) ? maybe

Is anyone familiar with the string tokenizer method.

I started doing my own approach..heres what i have:

<?php

$answer_check = 0;
$title_check = 0;

//opening the file
if (!($fp = fopen("file.txt", "r")))  
    exit("Unable to open the input file.");
   $i=0;
    while (!feof($fp))  

    {  

        $buffer = fgets($fp, 1024);
		$buffarray[$i] = $buffer; 

   $i++;
}
fclose($fp);


//doinf the parsing
echo("Parsing!...");
for($j=0; $j < count($buffarray); $j++)// here we visit each string
{  
	$tok = strtok($buffarray[$j]," \n\t");//now through each string, current line
	while ($tok) 
	{

                    if($tok == "<thetitle>")
					{
						$title_check = 1;
						//echo("check is 1");
					}
					if($title_check == 1)
					{
						echo("<h1> $tok </h1>");
						echo("printing element");
					}
					if($tok == "</thetitle>")
					{
						$title_check++;
						//echo("check is 0 again");
					}

            $tok = strtok(" \n\t");

}

}
?>

My problem is that $title_check gets to = the value '1' but never gets set back to zero so it prints my whole markup language from <thetitle> on...

I just want to parse what is inside the <thetitle> tag to be html

am i using the tokenizer properly?

thanks