The title may explain the gist of it, but I want to know something. I am new to coding in PHP, and am adding it alongside my HTML5 so I can create a website for a game I'm creating. But, I need to know if I can permanently and dynamically change the contents of a file within an FTP.
So, say if I had 2 array values in a Username and Password field when I first created it. Is there any possible way to create a function that, upon registering information, allows me to permanently add those array values, so that every time I open the file, it stays at three values?
I want to do this so that I have a simple login system created. If there are any questions that have what I'm looking for in PHP, feel free to close as a duplicate and point me in the right direction. This is my first step, and I hope I can get some help on it. Thanks again in advance.
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I am trying to create a forum on my page. I need some advice. I have MySQL database and I am able to to work with it. Yet as far as I can make is playing with POST. I mean on click submit a $_POST['submit']) becomes set and so on. Then connect to database, get info and display.This way of making a forum is bad, because it all happens on a single page. As far as I seen any other forum when entering one and so on has it's unique Uri (what comes after domain.com/) so you can simply send someone full url and they are in that thread (unlike if you play with $_POST['submit']).
Sorry if my question is not accurate and I am not asking to write me code. I just need someone to direct me to the right place and any advice would be helpful. Thanks !
Your question is difficult to understand, but I think you are confused about how data and pages are dynamic using GET/POST.
The URLS with different IDs are like an illusion. Really, its the same page, however the page is dynamically taking that ID from the URL, and using it to output certain data.
For example, say we habe the URL: www.example.com/show_thread.php?thread=3
The php would look like
if(isset($_GET['thread'])){
$data = $db>query("SELECT thread_title,thread_text FROM threads WHERE thread_id = $_GET['thread']");
print($data);
}
*Warning: do not use this exact code, it is an example, not secure, etc
Then the database would look like
thread_id thread_title thread_text
1 kngwihywoihwy kngwihywoihwykngwihywoihwy
2 vyfngoieyoiehyon ieonuwrtoi hunwrmt jirwyji
3 nuoaiefguneoihn eoithneiotheo
and the page would show
nuoaiefguneoihn eoithneiotheo
POSTing data is for sending it to the server, and doing something with it. Just like GET. However, GET is helpful for passing things around as they are accessible in links. Like this example.
This is kinda confusing, so forgive me if you don't understand what I am asking. I'm trying to develop my skills and I wanted to move onto images as a next step. I did a bit of searching and I thought a good way to try this would maybe be to generate military ribbon racks depending on the options the user selects.
(See something like this as an example: http://www.ribbon-rack-builder.com/ribbons/build/4)
Now, from looking at the source code I can see that the creator of that website creates a form with all of the different ribbons and allows the user to select the ones they want with checkboxes. This form is then posted to some PHP on the page somewhere.
Being new to the image concept I have no idea what kind of PHP this would be. Could anyone give me an idea of how this website could do this and where I should start should I want to create something similar?
Thanks very much!
First, you'll need to get which checkboxes were checked:
Set the name in the form to check_list[] and you will be able to
access all the checkboxes as an array($_POST['check_list'][])
Second, you'll most likely want to use the GD and Image Functions built into PHP.
There is a lot there, and it can be confusing, so I suggest you do some reading through questions on SO on the subject: https://stackoverflow.com/search?q=merge+image+[php]
Okay. So I don't have any example code to show, but after doing a bit of research and learning the basics of PHP, I think the answer to my question should be pretty simple.
Here is the scenario, as I would like it to be:
On the homepage there will be several team names, with scores next to them. Like "house-points" in Harry Potter.
Below the score is a small text-field. Below that is a submit button.
The user will put a number in the text-field, press submit, and that number will be added to the team's total score.
NOW. I know how to achieve all of that with JavaScript. Easy. What I want to know IS:
How do I make that new number (the new score total) STAY there. I need to permanently alter the HTML when that submit button is pressed.
All I know is that I need to use PHP. I know the basics of PHP, so whatever the answer is, just throw it at me and I'll figure it out.
Sounds like what you want to do is submitting forms. First drop the JavaScript, you won't need it. What you need is to put your text fields in a form and when you submit you can fetch your values with $_<GET|POST|REQUEST>['<name_of_field>'].
Then you will need to store it somehow. The best way to do it is to use a database like MySQL or MongoDB to store it, but it could be a bit tricky if you are just learning this, so maybe you would like to stick to files. You could do this with INI files and PHP's INI functions.
Lastly you will need to print out the correct values to the website. Now this is easy: Just edit your HTML file to do something like
<?php echo $score['team1']; ?>
for each team after retrieving the correct values at the top or something. (Don't forget to rename the HTML file to .php as well).
Now you should be all set to save your scores. =)
If you mean really permanent you'll have to send it to a database via Ajax (combination of PHP and Javascript). OR write it to a text-document, which is less good.
I'm designing a website for a small indie record label and they've dropped a bombshell asking if I could implement a function where a user can enter a code to receive a digital download.
Is there a simple solution to doing this? I was thinking all I would need is an input field where the user can enter a code, it gets verified and then allows a download but it sounds too simple. Is this even possible with something like .php (complete beginner)?
I'm willing to learn or I would've packed it in already so any advice would be great. Thanks.
Edit:
Thanks to some great advice I was able to create this!
If you wanted to do it at a very simple level, it is not much more than you describe it to be. You would need to familiarize with PHP and MySQL or some other database, but it isn't too difficult to create.
You need to figure a few things out, such as how do you want to limit the codes, 3 downloads in the first 24 hours to allow for failed downloads, restrict it to IP, or strictly one full download. Since you have the list of the 1000 codes given, you will probably want to base your system around having codes pre-generated and inserted in the database, rather than having an algorithm that can validate the codes on the fly and then check for already used codes.
You would want to store the download(s) in a directory that is not accessible from the web, and the php script would validate the code, and if valid serve the download to the user.
You can probably look to the wordpress plugin's database structure for other ideas, but I think at the very least you would need:
download_code (the code itself, probably primary key or at least index)
download_file (optional, the name/path of the file this code allows them to download)
redeemed (0 if not redeemed, 1 if redeemed)
redemption_time (timestamp of the first, or last redemption based on your requirements)
download_count (how many times downloaded if allowing more than 1)
ip_address (ip address of the redeemer)
email_address (email address if you want to collect it, or give user the option)
download_url (the unique string for the download url. this could be one way to implement download verification beyond the code, but is not necessary)
You would then need to create an html page with the text box for entering the code, and any other optional data you wish to collect. The form would submit to your PHP script.
When the PHP script receives a form post, it would validate all of the data (i.e. email address if you were collecting it). Once all data is valid, you read from the database looking for a code matching what the user entered.
If no data was found with the code, send them back to the form to try re-entering it. If a record is found, you can check the redeemed value from the database and see if the code has been used or not. If it has, this is where you can use custom logic to decide if they are still within their download window, the ip address is the same, or whatever criteria you want to use to allow re-downloads.
If it has been redeemed, show an error message. If it is still okay to download, you can serve a download by reading the file and sending it to the browser see example #1 here.
At some point you will have to update your database to set the redeemed flag to 1 and update the other values such as timestamp and download count. You can either run this code before you serve the download, or you can run it after the download is served. In some cases if the download was cut off, the last portion of your script won't run and therefore won't update redeemed or download_count. This may or may not be what you want, so you can decide where you want to do the updating.
Eventually you can update it to include an administration panel, but in the beginning all configuration could be done within the php script or config file. And eventually you could update it to use flash or some other technology to download the file and show progress bars etc.
Hopefully that will give you some idea on whether or not you want to try to implement it. Otherwise you could always search php on Hotscripts to see if there is an already rolled standalone version of what you want.
I'm trying to think of a way to create a list of items that I can display on a webpage that my visitors can tick off, without ever having to log in.
The list may be like so:
[ ] Buy potatoes
[ ] Pickup kids
[x] Drink more water
[ ] Go for a Run
If User A visits the site, and clicks "Drink More Water" I want that to save in a database so that when User B visits, "Drink More Water" is already ticked.
Is there any simple ways to do that:
in PHP?
with Javascript?
or even as a WordPress plugin?
Do you know if there's any existing code around that does this?
TaDa List by 37Signals comes very close, but only allows specific people to tick things off.
Any suggestions would be greatly appreciated.
Thanks
Turgs
If you want to create this yourself you should learn PHP and MySQL (and possibly Javascript (for AJAX)), and HTML and CSS (maybe you already know some of these). After you know these it will become clear how to create this.
You should first learn HTML
then PHP
then MySQL (or any SQL that works with PHP)
then CSS
Then Javascript
We can't really answer your question like this, because it involves big amounts of code. Adn won't really help you if you don't know these languages.
I'll tell you what you need to do, but you're going to have to research most of the things.
You need html to create the list.
You need php to query sql and check if one of them should be checked or not.
Load the page with the data you got from your database server (set the checked ones as checked).
When the user checks one of them you need to store it in the database, so that when another user loads the page he can then get the changes from the database.
Hope this is clear enough.
Just store that information in cookies.
$_COOKIE['ticket'] = 3;
when he visit the page next time just check if $_COOKIE['ticket'] is not empty.
You could do this kind of thing with a file instead of a database. So when the user checks off a box, it loads a PHP file that reads an XML file with the tasks and check-status, then re-writes that file with the modified value.
It's quick, dirty, and doesn't need a database.
You could use a REST like url that defines a list. i.e.: http://ticklist.com/list/145
People can share this common list.
Something like the logic of http://friendpaste.comTo let people share and edit source codes.