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Bug #11429 PHP 4.0.5 fails on simple while loop.
Submitted: 2001-06-12 06:42 UTC Modified: 2001-06-12 12:44 UTC
From: Dylan_G at bigfoot dot com Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 4.0.5 OS: Slackware Linux
Private report: No CVE-ID: None
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From: Dylan_G at bigfoot dot com
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 [2001-06-12 06:42 UTC] Dylan_G at bigfoot dot com 
Given this script:
-=-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0
Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<head>
<title>FTP server info</title>
<meta HTTP-EQUIV="REFRESH" CONTENT="60">
</head>
<body bgcolor="#FFFFFF">
<h1>Transfers in progress:</h1>
<table border="1" align="center" width="100%">
<?
$i = 0;
$anon = 0;
$idleanon = 0;
$maxconn = "5";
$types['RETR'] = "downloading";
$types['STOR'] = "uploading";
$inputfile = "/tmp/ftpinfo.txt";
$fp = fopen($inputfile,"r");
fgets($fp, 4096);
while($i < 25)
{
	$line = fgets($fp, 4096);	
	if(strstr($line, "Service class"))
		continue; /* Skip the lead in line */

	$bits = explode(" ", $line);
	if(substr($bits[12], 0, 9) == "anonymous" || substr($bits[7],
0, 9) == "anonymous")
	{
		if($bits[1] == '-')
		{
			echo "\t<tr>";
			echo "<td>$bits[11]</td><td> " . $types[$bits[13]] . " " .
chop($bits[14]) . "</td>";
			$percent_done = substr($bits[7], 1, strlen($bits[7]) - 3);
			/* Algorithm: speed colour is a factor of 10/3 */
			/* Note: since I can't get speed, I just use percent done */
			switch($percent_done)
			{
				case ($percent_done > 66):
					echo "<td bgcolor=\"#FF0000\">";
					break;

				case ($percent_done > 33):
					echo "<td bgcolor=\"#FFFF00\">";
					break;

				default:
					echo "<td bgcolor=\"#00FF00\">"; 
					break;
			}
			/* Leet progress meter. */
			print("[");
			$the_temp = 0;
			while($the_temp < 5)
			{
				if(($the_temp * 20) < $percent_done)
				{
					print("*");
				}
				else
				{
					print("\.");
				}
				$the_temp++;
			}
			print("]");

			echo " (" . $percent_done . "% done)</td>";
			echo "</tr>\n";
			$anon++;
		}
		else
			$idleanon++;
	}
	$line = fgets($fp, 4096);
	$line = fgets($fp, 4096);
	$i++;
}

echo "\t</table>\n";
if($idleanon)
	echo "\t<p>$idleanon user(s) are connected but idle</p>\n";
echo "\t<p>" . ($anon + $idleanon) . " of $maxconn users
connected</p>";
fclose($fp);

?>
<p><small>This page will autorefresh every minute.</small></p>
</body>
</html>
-=-
I get:
-=-
dylang@shadowgate:~$ lynx http://thock.com/ftpstats.php

Looking up thock.com
Making HTTP connection to thock.com
Sending HTTP request.
HTTP request sent; waiting for response.
Alert!: Unexpected network read error; connection aborted.
Can't Access `http://thock.com/ftpstats.php'
Alert!: Unable to access document.

lynx: Can't access startfile 
-=-

Not cool!

Commenting out
while($the_temp < 5)
{
...
}

makes it work, but there is no logical reason why it should
fail.

The file it is parsing is the output of ftpwho -v from ProFTPD.

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 [2001-06-12 12:44 UTC] sniper@php.net 
Please submit a new bug report with shortest possible
example that can be used to reproduce this.
The one here is way too long.
 
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