Problem in understanding php code

[vtp82]

I am vaibhav here i am a .net developer. I need help if anybody can I am having one php code that I need to convert in asp.net. but I do not understand what actually they had done in php so if anybody can explain that what have they done then I can convert it.

Php code is as follows :

<?php
$tt = "Corn Futures (CZ)";
echo "<SPAN class='tt'>".$tt."</SPAN>";
$rowspr = 0;
$outmode = 0;
$dataavl = 0;
$hand = fopen("http://www.cbot.com/cbot/pub/page/0,3181,793,00.html",r);

while (!feof($hand)) {
      $buffer = fgetss($hand, 4096,"<table><th><tr><td><br><ul><li>");
        
	if(strpos($buffer, "<table width='650' border='0' cellpadding='3' cellspacing='0' class='tableright'>")!==false){$outmode = 1;$dataavl = 1;}

	if(strpos($buffer, "<tr class='dataDetails")!==false){$rowspr = $rowspr + 1;}
	if($rowspr == 4){$outmode = 0;echo "</table>"; $rowspr = $rowspr + 1;}


	if($outmode == 1)
	{
	$buffer = str_replace("= Chart","",$buffer);
	$buffer = str_replace("= Option","",$buffer);
      echo $buffer;
     	if(strpos($buffer, "</table>")!==false){$outmode = 0;}
	}
    }
fclose($hand);
if($dataavl == 0){echo "<br><i>Data is currently not available.</i>";}
?>

&nbsp;<br>
&nbsp;<br>
&nbsp;<br>

<?php
$tt = "Ethanol Futures (EZ)";
echo "<SPAN class='tt'>".$tt."</SPAN>";
$rowspr = 0;
$outmode = 0;
$dataavl = 0;
$hand = fopen("http://www.cbot.com/cbot/pub/page/0,3181,1754,00.html",r);

while (!feof($hand)) {
      $buffer = fgetss($hand, 4096,"<table><th><tr><td><br><ul><li>");
        
	if(strpos($buffer, "<table width='650' border='0' cellpadding='3' cellspacing='0' class='tableright'>")!==false){$outmode = 1;$dataavl = 1;}

	if(strpos($buffer, "<tr class='dataDetails")!==false){$rowspr = $rowspr + 1;}
	if($rowspr == 4){$outmode = 0;echo "</table>"; $rowspr = $rowspr + 1;}


	if($outmode == 1)
	{
	$buffer = str_replace("= Chart","",$buffer);
	$buffer = str_replace("= Option","",$buffer);
      echo $buffer;
     	if(strpos($buffer, "</table>")!==false){$outmode = 0;}
	}
    }
fclose($hand);
if($dataavl == 0){echo "<br><i>Data is currently not available.</i>";}
?>

can anybody make me understand of this code.

[Dormilich]

in short, they read a website and extract data from a HTML table.

[vtp82]

Thanks for reply but they read data from all HTML Tables or any specific table from that HTML Source.

[Dormilich]

any table that starts like defined in line #45

[vtp82]

You mean table which is defined only on line #45. no other tables have been read ?

[Dormilich]

basically, yes. That’s what the code says.