PHP - Any One Who Can Help Me To Make A Plagiarism Checker?

Any programmer here who can help me to create plagiarism checker? please i need a reply. thanks in advance. godbless

Hello guys, i have a problem that i am trying to solve myself for the entire past week. I am not a php programmer and i wish you can help me.
There is a russian project called Crot Anti-Plagiarism, it is a open source moodle plugin. I started to use it and it is a really nice feature. The problem is that there are quite few people that are developing it and new features are coming once a year...
I see a big "hole" in this project (at least for me) : The plugin checks for plagiarism in the file that you submit only once, if a student resubmits the file it doesn't see that and you need to start the plugin's test again for all the files which is time consuming if you have a lot of submitted files to check.
I would like to add a function that will check if a file changed his modified date , if yes - mark for checking, if no - skip the checking.
I already added a similar function that checks if the name has changed, but it seems harder to check it by uploaded time(modified time).
Things i have already done:
I added a new column "assignment_submissions_timemodified" in database.
I added a new function that records the "time modified" of the file in the database.
But i can't add and i cannot make the comparison between the date of the first time the file submitted versus the date of the second time the same file was resubmitted.
Alright no more bullsh**t here is the code: (there are 3 comments that shows what i've changed, starting with  //my job...)
Thanks a lot!
Code: [Select]
$apath= $CFG->dataroot."/$assignment->course/moddata/assignment/$asubmission->assignment/$asubmission->userid";
        $timemodified= filemtime($apath);    //my job... it checks the file's modified time.
$files = scandir($apath, 1);
if (! $unprocessedsubm = get_record("crot_submissions", "submissionid", $asubmission->id, "crot_submission_file_name", $files[0], "assignment_submissions_timemodified", $timemodified))  //my job...now i guess here is the problem ( "assignment_submissions_timemodified", $timemodified)
{
        echo "$timemodified";
        echo "$unprocessedsubm";
print_r($unprocessedsubm);
echo "\nsubmission $asubmission->id was not processed yet. start processing now ... \n" ;
$atime = microtime();
$atime = explode(" ",$atime);
$atime = $atime[1] + $atime[0];
$astarttime = $atime;
if(!count($files))break;
//TODO we should verify if filename changed
//TODO add loop on the documents folder as well as loop for unzipping
$apath = $apath."/$files[0]";
// call tokenizer to get plain text and store it in crot_submissions
$atext = tokenizer ($apath);
// update the crot_submissions table
// delete if exists
delete_records("crot_submissions", "submissionid", $asubmission->id);
// insert the new record
$record->submissionid=$asubmission->id;
$record->updated = time();
$record->crot_submission_file_name = $files[0];                                   
$record->assignment_submissions_timemodified = $timemodified;        //this is my job.... it is recording the date as it has to.
$submid = insert_record("crot_submissions", $record);
// insert into documents
$docrecord->crot_submission_id = $submid;
Also i have attached the whole file crot_crone.php.

Hello friends,

I've tried to search over the Internet but didn't found any tutorial how to do the following :-

let say we have form with input username and input email just 2 field

HTML Code

Code: [Select]
<form>
<table>
<tr>
<td>Username :</td>
<td><input id="username" size="20" type="text" name="username"></td>
</tr>
<tr>
<td>Email :</td>
<td><input id="email" size="20" type="text" name="email"></td>
</tr>
</table>
</form>

As you can see no submit button cause we will only check out if username and/or email is not stored already, by using ajax

My problem : i can only check out for username (1 field) but i can not check for 2 fields or more and i want to know how to apply it for 2 fields (username and email)

Here is my idea for only one field (username)

I'll add in the HTML code  this

Code: [Select]
<td><div id="status"></div></td>
and will add this java code

Code: [Select]
<SCRIPT type="text/javascript">
pic1 = new Image(16, 16);
pic1.src = "loader.gif";
$(document).ready(function(){
$("#username").change(function() {
var usr = $("#username").val();
if(usr.length >= 4)
{
$("#status").html('<img src="loader.gif" align="absmiddle">&nbsp;Checking availability...');
$.ajax({
type: "POST",
url: "check.php",
data: "username="+ usr,
success: function(msg){
$("#status").ajaxComplete(function(event, request, settings){
if(msg == 'OK')
{
$("#username").removeClass('object_error');
$("#username").addClass("object_ok");
$(this).html('&nbsp;<img src="tick.gif" align="absmiddle">');
}
else
{
$("#username").removeClass('object_ok');
$("#username").addClass("object_error");
$(this).html(msg);
}
});
}
});
}
else
{
$("#status").html('<font color="red">The username should have at least <strong>4</strong> characters.</font>');
$("#username").removeClass('object_ok');
$("#username").addClass("object_error");
}
});
});
</SCRIPT>

Explain : it will get the input of username and will send it to check.php

Now check.php code (should have all usernames that will compare with it)

Code: [Select]
<?php
if(isSet($_POST['username']))
{
$usernames = array('john','michael','terry', 'steve', 'donald');
$username = $_POST['username'];
if(in_array($username, $usernames))
{
echo '<font color="red">The username<STRONG>'.$username.'</STRONG> is already in use.</font>';
}
else
{
echo 'OK';
}
}
?>

Now it is very clear , if will automatic check the username

now my problem is how to apply it for also email

I am trying to make a Server Status checker that uses a image to tell if it is online or not. I also am trying to make it so you can the URL as a image code(EX: http://Http://domain.com/statuscheck.php?ip=google.com&port=80). What I'm trying to say it, that if you do like <img src="http://Http://domain.com/statuscheck.php?ip=google.com&port=80"> it would go to my site, use the php script, and then have the image Online or Offline, were the <img> code was posted.

Here's my code Im trying to make it from.
<?php
$ip="{$_GET['ip']}";
$port="{$_GET['port']}";
if(!$sock=@fsockopen($ip,"$port", $num, $error, 5)) {
Header('Content-type: image/png');
echo"<img src='images/offline.png'>";
} else {
Header('Content-type: image/png');
echo"<img src='images/online.png'>";
}
?>

Hi all, I have this script I used on a site hosted on my machine that checked if different servers and applications were running on my machine.
Here's the code.

Code: [Select]
<html>
        <body>
        <style>
        fd{
color: #000000
font-size:100%
}
</style>

<?php
function check_port($port) {
    $conn = @fsockopen("212.233.xxx.xxx", $port, $errno, $errstr, 0.2);
    if ($conn) {
        fclose($conn);
        return true;
    }
}

function server_report() {
    $report = array();
    $svcs = array('21'=>'FTP',
                  '22'=>'SSH',
                  '25'=>'SMTP',
                  '80'=>'HTTP',
                  '110'=>'POP3',
                  '143'=>'IMAP',
                  '3306'=>'MySQL',
                                  '8080'=>'HFS',
                                  '8081'=>'Webcam',
                                  '3784'=>'Ventrilo'); 
    foreach ($svcs as $port=>$service) {
        $report[$service] = check_port($port);
    }
    return $report;
}

$report = server_report();
?>

<center>
<table>

    <tr>
        <td><font face="Verdana" size="1" color="#000000">Apache:</td>
        <td><font face="Verdana" size="1" color="#000000">
                <?php echo $report['HTTP'] ? "<img src='main/images/on.png' width='16' height='15' border='0'>" : "<img src='main/images/off.png' width='16' height='15' border='0'>"; ?></font></td>
    </tr>
       
        <tr>
        <td><font face="Verdana" size="1" color="#000000">MySQL:</td>
        <td><font face="Verdana" size="1" color="#000000">
                <?php echo $report['MySQL'] ? "<img src='main/images/on.png' width='16' height='15' border='0'>" : "<img src='main/images/off.png' width='16' height='15' border='0'>"; ?></font></td>
    </tr>
       
    <tr>
        <td><font face="Verdana" size="1" color="#000000">HFS:</td>
        <td><font face="Verdana" size="1" color="#000000">
                <?php echo $report['HFS'] ? "<img src='main/images/on.png' width='16' height='15' border='0'>" : "<img src='main/images/off.png' width='16' height='15' border='0'>"; ?></font></td>
    </tr>
       
         <tr>
        <td><font face="Verdana" size="1" color="#000000">FTP:</font></td>
        <td><font face="Verdana" size="1" color="#000000">
                <?php echo $report['FTP'] ? "<img src='main/images/on.png' width='16' height='15' border='0'>" : "<img src='main/images/off.png' width='16' height='15' border='0'>"; ?></font></td>
    </tr>
       
        <tr>
        <td><font face="Verdana" size="1" color="#000000">Webcam:</font></td>
        <td><font face="Verdana" size="1" color="#000000">
                <?php echo $report['Webcam'] ? "<img src='main/images/on.png' width='16' height='15' border='0'>" : "<img src='main/images/off.png' width='16' height='15' border='0'>"; ?></font></td>
    </tr>
       
        <tr>
        <td><font face="Verdana" size="1" color="#000000">Ventrilo:</font></td>
        <td><font face="Verdana" size="1" color="#000000">
                <?php echo $report['Ventrilo'] ? "<img src='main/images/on.png' width='16' height='15' border='0'>" : "<img src='main/images/off.png' width='16' height='15' border='0'>"; ?></font></td>
    </tr>


</table>
</center>

</body>
</html>
I've added the HTML too. As you can see it checks if the ports are open. It worked perfectly and I didn't have any issues with it at all.
Now, for a couple of days, I've been using an awardspace paid hosting, bought a domain name.
I use wordpress now, and I pasted this code directly in a PHP/HTML code box (I use a plugin that enables use of PHP) and it shows the HTML formatting how it should be, but unfortunately doesn't work as intended.
It shows everything to be down, while apache, mysql and my ftp server are still running on my computer (the IP it checks, 212.233.xxx.xxx).
When I set the IP to be 127.0.0.1, the IP of the awardspace server as far as my script is concerned, it shows only that the IP is working.

So, any suggestions? Any idea would be greatly appreciated