PHP - Color Changing System

Hello everyone!

I need a little help to get functions names from the GD library.
first i want to say i have a little knowledge with GD library like create image with words and etc.

So , what i'm trying to do is to take image and than
take the color of the first pixel on the top left than do some function work and than
set this pixel on the top left to another color.

now , i know how the algorithm should look like , i just don't know what function i need to use to:
take specific pixel color from the image
set new color for pixel on specific place

i'll be glad if you could help me with that ,
regards , Mor.

i am trying to add a like system to my forum similar to facebook where it shows how many people like a post.

this is my code so far:

$like_list = "";
            
            $likes = explode("|", $post_info['post_likes']);
            $amount_likes = count($likes);
            $ac_likes = ($amount_likes / 2);
            $slice = array_slice($likes, 0, 4, true);
            $remain = array_slice($likes, 4, $ac_likes, true);
            $remain_num = count($remain);
            
            if ($ac_likes >= 4)
            {
                for($i=0; $i<$ac_likes; $i+=2)
                {
                    $like_list .= $likes[$i].", ";
                }
                $like_list .= " and $remain_num others like this";
            }
            elseif ($amount_likes == 1    )
            {
                $like_list .= "0 people like this";
            }
            elseif ($ac_likes == 1)
            {
                $like_list = implode(", ", $likes);
                $like_list .= " likes this";
            }
            else
            {
                $like_list = implode(", ", $likes);
                $like_list .= " like this";
            }

$post_info['post_likes'] contains data like:

Code: [Select]
user1|123456789|user2|123456789
where the number is the timestamp.

unfortunatly $like_list prints the username and the timestamp when i would like it to only display the username. This means
printing every 2nd element in the array starting from 0. I have seen this done with for loops but i am not using one therefore i am stuck. Any ideas? and is this the best database setup for likes? the post_likes column is added on to the end of the post table.

  Hi this is my login script i do have the html if you need to see it please ask & i was wondering if anyone would be kind enough to tell me how i can get my ban system to work Thanks

<?php

require 'connect.php';

if(isset($_POST['submit'])) {

	$username = $_POST['username'];
	$password = $_POST['password'];

	//Prevent hackers from using SQL Injection
	$username = stripslashes($username);
	$password = stripslashes($password);
	$username = mysql_real_escape_string($username);
	$password = mysql_real_escape_string($password);

	$sql = "SELECT * FROM $tbl_name WHERE username='$username' AND password='$password'";
	$result = mysql_query($sql);
	$count = mysql_num_rows($result);

	$user_level = $_GET['user_level'];

	$_SESSION['user_level'] = $user_level;

	if($count == 1) {

		$_SESSION['username'];
		$_SESSION['password'];
		header("Location: index.php");
	} else {

		echo "Please check the username and password you entered is correct.";
	} if($_SESSION['user_level'] == 0) {
		$_SESSION['username'];
		$_SESSION['password'];
		header("Location: index.php");
		
	} else if($_SESSION['user_level'] == -1) {

		die();
		header("Location: banned.php");

	} else if($_SESSION['user_level'] < -1) {
		die();
		echo "An error has occurred please contact your administrator.";

	} else if($_SESSION['user_level'] == 1) {
		$_SESSION['username'];
		$_SESSION['password'];
		header("Location: admin.php");

	}


}

?>

Edited by Tom8001, 23 November 2014 - 12:18 PM.

Hi all

I have been looking though loads of tutorials regarding log in method for websites (not APIs), and cant help find that they are outdated.

So I am asking what is the correct way to create a log in system using php?

Modern websites use JavaScript for asynchronous web requests so this requirement should also be catered for. APIs and mobile apps use access tokens which is very secure if implemented correctly.

Can we use the token principle for websites? As the way I see it that most php log in systems use php sessions and they create a session and save some data in this session when the user successfully authenticates, however the session id is held in a cookie so if the cookie is stolen then they have access to your account.

API access tokens are expired and refreshed periodically so is there such a implementation method for web sites too?

Hey guys,
I'm starting to build a website and I was wondering wether I should use a library template engine such as smarty, or use pure php, such as this tutorial - http://www.massassi.com/php/articles/template_engines/

Basically the website will not expose any of the users/designers to the designer portion of the website. I am scratching my head wether I should use smarty or pure php, even Facebook uses smarty, from what I have heard. I need some answers.

Thank you all!

I'm trying to build a login system and alot of the code is similar to what i used to make my news cms. basically all i wanna accomplish right now is to get the user input inserted into my database. I've already tested it out, and I get no errors, but like with the cms, the database isn't getting queryed.

Here's the code:
(process.php)
Code: [Select]
<?php
 $first_name=$_POST['first_name']; 
 $last_name=$_POST['last_name']; 
 $age=$_POST['age']; 
 $city=$_POST['city']; 
 $state=$_POST['state']; 
 $country=$_POST['country']; 
 $zip=$_POST['zip']; 
 $birthdate=$_POST['birthdate']; 
 $gender=$_POST['gender']; 
 $sexuality=$_POST['sexuality']; 
 $race=$_POST['race']; 
 $religion=$_POST['religion']; 
 $status=$_POST['status']; 
 $about=$_POST['about']; 
 $website=$_POST['website']; 
 $user_name=$_POST['user_name']; 
 $password=$_POST['password']; 
 $email=$_POST['email']; 
 mysql_connect("your hostname", "your database name", "your password") or die(mysql_error()); 
 mysql_select_db("your database name") or die(mysql_error()); 
 
 $sql = sprintf("INSERT INTO Users (first_name, last_name, age, city, state, country, zip, birthdate, gender, sexuality, race, religion, status, about, website, user_name, password, email)
VALUES ('%s', '%s', '%s', '%s', '%s')",
mysql_real_escape_string($first_name),
mysql_real_escape_string($last_name),
mysql_real_escape_string($age),
mysql_real_escape_string($city),
mysql_real_escape_string($state),
mysql_real_escape_string($country),
mysql_real_escape_string($zip),
mysql_real_escape_string($birthdate),
mysql_real_escape_string($gender),
mysql_real_escape_string($sexuality),
mysql_real_escape_string($race),
mysql_real_escape_string($religion),
mysql_real_escape_string($status),
mysql_real_escape_string($about),
mysql_real_escape_string($website),
mysql_real_escape_string($user_name),
mysql_real_escape_string($password),
mysql_real_escape_string($email));
$result = mysql_query($sql); 
 
 
 Print "Congratulations! You are now a registered member on yourwebsite.com!"; 
 ?>
(register/index.php)
Code: [Select]
<script language = "Javascript">
 
function Validate()
{
    if (document.register.first_name.value == '')
    {
        alert('You have not specified your first name!');
        return false;
    }
if (document.register.last_name.value == '')
    {
        alert('You have not specified your last name!');
        return false;
    }
if (document.register.age.value == '')
    {
        alert('You have not specified your age!');
        return false;
    }
if (document.register.country.value == '')
    {
        alert('You have not entered a country!');
        return false;
    }
if (document.register.birthdate.value == '')
    {
        alert('You have not entered your date of birth!');
        return false;
    }
if (document.register.gender.value == '')
    {
        alert('You have not specified your gender!');
        return false;
    }
if (document.register.user_name.value == '')
    {
        alert('You have not entered a username!');
        return false;
    }
if (document.register.email.value == '')
    {
        alert('You have not entered an email!');
        return false;
    }
if (document.register.password.value == '')
    {
        alert('You have not entered a password!');
        return false;
    }
    return true;
}
</script>
      <form name="register" method="post" action="http://www.djsmiley.net/register/process.php" onsubmit="return Validate();">
                    <table width="100%" border="0">
                      <tr>
                        <td>First Name:</td>
                        <td><label>
                          <input type="text" name="first_name" id="first_name" />
                        </label></td>
                      </tr>
                      <tr>
                        <td>Last Name:</td>
                        <td><input type="text" name="last_name" id="last_name" /></td>
                      </tr>
                      <tr>
                        <td>Age:</td>
                        <td><input type="text" name="age" id="age" /></td>
                      </tr>
                      <tr>
                        <td>City:</td>
                        <td><input type="text" name="city" id="city" /></td>
                      </tr>
                      <tr>
                        <td>State:</td>
                        <td><input type="text" name="state" id="state" /></td>
                      </tr>
                      <tr>
                        <td>Country:</td>
                        <td><input type="text" name="country" id="country" /></td>
                      </tr>
                      <tr>
                        <td>Zip:</td>
                        <td><input type="text" name="zip" id="zip" /></td>
                      </tr>
                      <tr>
                        <td>Birthdate:</td>
                        <td><input type="text" name="birthdate" id="birthdate" /></td>
                      </tr>
                      <tr>
                        <td>Gender:</td>
                        <td><input type="text" name="gender" id="gender" /></td>
                      </tr>
                      <tr>
                        <td>Sexuality:</td>
                        <td><input type="text" name="sexuality" id="sexuality" /></td>
                      </tr>
                      <tr>
                        <td>Race:</td>
                        <td><input type="text" name="race" id="race" /></td>
                      </tr>
                      <tr>
                        <td>Religion:</td>
                        <td><input type="text" name="religion" id="religion" /></td>
                      </tr>
                      <tr>
                        <td>Marital Status:</td>
                        <td><input type="text" name="status" id="status" /></td>
                      </tr>
                      <tr>
                        <td>About You:</td>
                        <td><label>
                          <textarea name="about" id="about" cols="45" rows="5"></textarea>
                        </label></td>
                      </tr>
                      <tr>
                        <td>Website:</td>
                        <td><input type="text" name="website" id="website" /></td>
                      </tr>
                      <tr>
                        <td width="13%">Username: </td>
                        <td width="87%"><input type="text" name="user_name" id="user_name" /></td>
                      </tr>
                      <tr>
                        <td>Email: </td>
                        <td><input type="text" name="email" id="email" /></td>
                      </tr>
                      <tr>
                        <td>Password: </td>
                        <td><input type="password" name="password" id="password" /></td>
                      </tr>
                      <tr>
                        <td>&nbsp;</td>
                        <td><input name="Register Button" type="submit" class="Button1" id="Register Button" value="Register" />
                        <input name="Reset Button" type="reset" class="Button1" id="Reset Button" value="Clear" /></td>
                      </tr>
                    </table>
                    <label></label>
      </form>

I'm busy with a small storage system for my site, but i encounter some problems with it.
I have successfully managed to get all products from the order, and traced on what spots those product are in the warehouse.
It looks like this atm http://img37.imageshack.us/img37/7302/tableordereng.jpg

this is the code i have atm (sorry i program in dutch, i hope its abit understandable)

Code: [Select]
<?php

$query = "select * from `orderregel` WHERE `ordernr`='".$ordernr."'";
   $row = mysql_fetch_array( $query );
            
   echo "<table border=1 width=680 bgcolor=#FFFFFF>
     <tr>
            <th width= 100>artikelnummer</th>
        <th width= 100>productnaam</th>
            <th width= 40>Plaats</th>
        <th width= 40>aantal in magazijn</th>
            <th width= 40>aantal nodig</th>          
     </tr>
         </table>";  
                      
            foreach ( self::find_by_sql($query) as $user)
            {   
                $query2 = "select * from magazijn WHERE artikelnr = ".$user->artikelnr."";
                $row = mysql_fetch_array( $query );
            
                foreach ( self::find_by_sql($query2) as $magazijn)
                {
                echo "<table class= order_overzicht border= 0 width= 680>";
                echo "<tr>    
                        <td width= 100>".$magazijn->artikelnr."</td>            
                        <td width= 100>".$magazijn->productnaam."</td>
                        <td width= 40>".$magazijn->magazijn_plaats."</td>
                        <td width= 40>".$magazijn->aantal."</td>
                        <td width= 40>".$user->aantal."</td>
                      </tr>
                      </table>";
                }
            }
?>

The problem i have now is, that i want it to do the following.
for example someone orders 430 packages of Haribo Kers Cola (see imageshack upload). I first want it to empty spot 16 in the wherehouse.
Only when spot 16 is empty, i want it to go to the next spot (19) wich contains the same product.

the end result would be something like this:

http://img690.imageshack.us/img690/6246/tableorderneweng.jpg

i hope you guys can help me out on this one, becouse i have no clue how i can resolve this problem

thanks in advance

(Sorry btw for my bad english )

i am making a private messaging system like hotmails where the message list appears on the left. Then when you click on one of them the box on the right loads the email. The problem is i dont really know how to go about it. Anyone have any pointers?

I already have a web based RPG game I am developing. Here is a small video to showcase the loot animation.     My problem is, I want to add combat. I will be using html 5 websockets. I already have a websockets server up so multiplayer isn't the issue.   A good combat system I found is on this game: http://treasurearena.clay.io/   I'm not going to dig out the source code, and try to extract the combat system from this game. Just trying to find something similar that I can use, does anyone have any recommendations?   Thanks!   Edit: It can be as simple as swinging a freaking sword and moving. That's all I really want, I just don't want the boring 'click', 'click', and 'click' bullshit.

<form action='index.php'  method='POST'  enctype='multipart/form-dat'>

<select name='votes'>
  <option>SEATOWN</option>
 <option>vote1</option>
 <option>vote2</option>
 <option>vote3</option>
</select>
<input type='submit' name='vote' value='Vote'>
</form>
<?php

$vote=$_GET['votes'];
if(isset($_POST['vote']))
{
echo "voted";
echo $vote;
}


?>

why would this not echo out anything for $vote???


cheers matt

Looking for the best way to set-up the db of a messaging system. Here's what I have so far (basically pulled from another forum), don't know if Table1 is even really necessary:

Table1:
id
user_message_id
recepient_id
recepient_read

Table2:
user_message_id
sender_id
sender_read
subject
message
created_at
updated_at



Basically it needs to function where, someone submits a message to the admin or moderator, the admin/moderators can review and reply, and then the user can submit another reply, and keeps going indefinitely. I want each reply to show up almost like a forum thread.

How would I chain the reply messages to the original messages?

i have an events script that displays upcoming events,

and i just add the event in a simple form, stores in database and shows on my control panel, and the clients control panel ( only clients events )

firstly what is the best way to sort by date? i enter the date into a text field like 12-04-11 but this when sorted doesnt appear in upcoming first?

then secondly how cani have it so, past events no longer show up so, if date = > today do not show?

I've abandoned my old script and switched to this one: http://www.evolt.org/node/60384

I got it working on my site just fine (djsmiley.net/members/register - you can test it out if u want). i just want to know how i can put all of the code into the pages i created using my template.

It doesn't specify how this can be done in the tutorial, which is why im confused. I've tried everything but keep getting errors. Help?