aeonsky

Please disregard my question. I forgot I can use toString on each object and store it in a string. In class B's toString, I can just return that string.

How do I make this simple example work, with multiple toString methods. In class A, you instantiate class B, and print a B object using B's toString method. However, the B object contains multiple instantiated class C objects. Class C has its own toString method. Here's what I did, in class B I just System.out.print() all class C objects (thus using C's toString method) and returned "" at the end of B's toString method. Is there a better way to do it?

Seems I missed a few... 5. Abstract classes 6. Interfaces

Hello, I'm studying for my ZCE exam and had this question. Is this list correct, that I compiled, in describing the major changes in OOP from PHP4 to PHP5. 1. Visibility (PPP) 2. Inheritance 3. __construct && __destruct 4. Static methods and properties None of the books I read, gave a straight list (wasn't really expecting to find one) and couldn't find something like this on the web.

As I found, it seems this is a common problem for beginners. If you are not installing using Instant Rails, a database system will not be installed for you. Wihtout, in this case, SQLite 3, the application would not run. Make sure you check the log files!

Hello! Since I'm currently training for my PHP certification exam, I decided to try out Ruby on Rails. I'm somewhat familiar with Ruby (wrote few dozen scripts), but I have never tried to use Rails yet. I setup Ruby, RubyGems, MySQL, and can run WEBrick fine. I followed this tutorial: link. When I get to: http://localhost:3000, the main page shows up correctly. Link. However, when I try to view my application by visiting http://localhost:3000/hello, I get an error page. Link. Anyone know why this might be happening, maybe the tutorial is wrong? Thanks for the time.

Can't you just use 'or die();' when connecting? @ is significantly slower.

I just made one... index.php <?PHP include("ClassOne.php"); ClassOne::function_two_in_Class_One("test"); ?> ClassOne.php <?PHP class ClassOne { public function function_one_in_Class_One($lol) { print $lol; } public function function_two_in_Class_One($hmm) { $this->function_one_in_Class_One($hmm); } } ?> It everything correct? I think it is, but it does not work. This works... ClassOne::function_two_in_Class_One($hmm); Gives me this error... Fatal error: Using $this when not in object context in C:\Users\Skynorth\Desktop\Localhost\bug\ClassOne.php on line 13 What do you think? P.S. - I think I got what the problem is. I think once you use a Paamayim Nekudotayim, it treats the related function as if it was outside the class and thus, all the function inside the class are not accessible anymore. I read the page on www.php.net on Paamayim Nekudotayim, but it doesn't not say anything about this issue.

I have this in Content.php (Content class)... public function get_adj_menu_width($full_url) { $dim = Viewer::get_dim_img($full_url); $adj_width = $dim[0] + 2; return $adj_width; } get_dim_img() exists only in one class - Viewer class. I call get_adj_menu_width() in the same Content class... public function print_menu_header($manga, $chapter, $page, $menu_array) { if(!$page) echo '<div class="usual" style="width: '.$_SESSION['default_width'].'px"><ul class="idTabs snow">'; else { $adj_width = $this->get_adj_menu_width("$manga/$chapter/$page"); if($adj_width < 600) $adj_width = "600"; echo '<div class="usual" style="width: '.$adj_width.'px"><ul class="idTabs snow">'; } It is not terribly important to me, but I've always used $this-> when I'm in the same class. I guess just a matter of being consistent. By the way, thanks for looking into this problem. P.S. -> I'm thinking its a PHP bug because I read of stories that when people used a lot of function calls in function calls in another classes (I know it sounds random, and it is) they get the same kind of error that I did. And I went through the code 50 times, I do not believe that any of it is wrong.

class Viewer { public function get_dim_img($full_url) { $size = getimagesize('./'.$_SESSION['manga_directory'].'/'.$full_url); return $size; } public function print_image_with_black_div($picture) { $dim = $this->get_dim_img($picture); //LINE 16 $width = $dim[0]; $height = $dim[1]; print "\n\n<div style=\"width: {$width}px; height: {$height}px\" class=\"black_b\">"; echo "<img src=\"index.php?p=$picture\" border=\"0\">"; echo '</div>'; } } This works... Viewer::get_dim_img($picture); But this doesn't... $this->get_dim_img($picture); I get this error... Fatal error: Call to undefined method Content::get_dim_img() in /home/sorascan/public_html/smv/code/classes/Viewer.php on line 16 The only place where I call print_image_with_black_div is in viewer.php (different file, not Viewer.php)... if($page) Viewer::print_image_with_black_div("$manga/$chapter/$page"); else Viewer::print_default_text(); I am very frustrated and do not know why $this doesn't work when calling another function within the same class. Any help would be appreciated, thank you!

You may have magic_quotes enabled. http://us3.php.net/magic_quotes

Ok then, but its you didn't set it to anything... How about... $color_user = $_POST['color_user']; I'd also would like to discourage you from using globals. In higher level languages they are forbidden (from my experience anyways).

Where do you get $color_user in check(){} ?

The reason why I asked if it could be exploited, well not exploited, but made things to that it shouldn't is because its not regex (less control). And I just found one... Take this line for example: lol:9cdfb439c7876e703e307864c9167a15* By the way md5("lol") equals "9cdfb439c7876e703e307864c9167a15" If you enter "ol" as username and "lol" as password, you still get entered as user "lol". Can anyone help with a solution (without using regex)? Now that I think about it, it is not terrible that it does that since if there was a user called "ol" he would have a different password anyways. But if they somehow ended up with same passwords, all these users have same privileges. However, I still like for it to somehow be solved. Thank you!

I have a login script that checks for a correct username and password from a flat-file database. I was using preg_match, but I realized stripos should do the same thing but much faster. And I was wondering if this can be exploited in anyway. I tried a combination of things, but they weren't successful. public function check_login($u, $p) { $p = md5($p); $pos = stripos(file_get_contents($this->users_db), "{$u}:{$p}*"); if($pos !== false) return true; else return false; } Flatfile db <?PHP die(); ?>* lol:9cdfb439c7876e703e307864c9167a15* test:098f6bcd4621d373cade4e832627b4f6* admin:21232f297a57a5a743894a0e4a801fc3* Thanks for the time!