PHP - [rookie] Terminology - Need Advice As To What This Is

can you guys help with this a little bit?  i've been in so many companies.  I get so sick of this.  people throw terms around all the time and a lot of times, at least what I've noticed, is that a lot of people don't even really know what they're talking about.  take for instance, this:

https://www.php.net/manual/en/class.iterator.php

if you consider the link, it is calling the iterator a class.  but, in the article it is described as an interface.  to me, that's just ridiculous.  you see, what's going to happen with that, is that I'm going to go into a meeting next week and some person from india is going to argue with me about ""well, no, a class is not an interface.....yada yada..."", and on and on and on.  obviously this is extremely simple, and most CEOs understand that.  I've never understood why engineers do not.  it's nothing more than a hierarchy.  everything is.  sooooo.....to start here, does anyone reading this understand what I'm trying to say?  This is nothing more than information management, as everything is anyway.  That's why it's very simple.  at this point, I would think that no one should have to write code anymore, even if the concepts of low code and no code did not exist.  code is so patternized anyway, and there are only so many objects on Earth to mimic in the electronic world, is that not why frameworks were created in the first place?  let us start there.  comments anyone?  thanks.

Adam

Perhaps a slight trouble, but I can not solve it:   Match only path like: Trainings/1/test.pdf   but dont match one more directory like this: Trainings/1/4/other.pdf   Any suggestions?

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I know this is a rookie question but whats actually happening with a progress bar what is it actually monitoring.

I figure the only way to understand it is to get this answer.

when i run a piece off php code how can i get a progress bar to monitor it while it runs untill completion off the code??

most progressbars i have seen are file upload and download. is it monitoring the amount off requests the browser sends when upload the file so its monitoring the bytes that are being transfer?

Can someone please give me a better understanding off whats going on?

I just want a simple progress bar to monitor progress while my php code is running so say if i am running this simple code to backup a websites files and folders, how could i do this???

Code: [Select]
<?php if ( isset($_POST['backup']) ) {
      if(exec("cd {$_SERVER['DOCUMENT_ROOT']}/wp-content/plugins/s3bk/files;tar -cvpzf backup.tar ".get_option(    'isd-server')."")) { echo "done"; } 
}
<form id="backup" method='post' action=''>
<input type='submit' class="button" name='backup' value='backup'>
sorry for the rookie question just really want to get my head around whats actually happening???

Thanks

Hi everybody

I am a PHP rookie for now, and
I want to reload the same dynamic page - it's content in several languages - by clicking little flags which are located at some point on the page - AND ITS NOT WORKING.

Clicking on the flag triggers a PHP script which basically says

Code: [Select]

]$_SESSION['lang'] = <Some_language>;
require ('webpage.php');


where webpage.php is the dynamic page, in different languages, with it's content drawn out from a database (which contains the content in all languages I chose to display, blah, blah)
Funny thing - when I look at the page html (View Page Source) - it seems OK (identical from one page to the next) ! But WHAT is displayed after the first attempt to change the language is not.
Is something fundamentally wrong with my approach ?

Mike

I'm a little confused with the use of absolute paths in PHP.  I've always used relative paths but it's becoming an issue with some of the apps I'm working with and absolute would solve the problem.

The thing is, I'm getting different results in different places and I'm a little confused.

With regular HTML I seem to be able to use / as the root of my site.  So if I do the following...

Code: [Select]
<img src="/images/name.jpg" />
That works fine no matter what page it's called from in the site and no matter what directory that page is in.  I need to be able to do that same thing with PHP.

Now, in my custom 404 page I have the following...

Code: [Select]
if($AddressURL == 'http://www.domain.com/blog/files/filename.zip')
{
header('HTTP/1.1 301 Moved Permanently');
header('Location: /download/filename.zip');
exit();
}

That actually works just fine. If I go to the /blog/files/filename.zip (which doesn't exist) in a web browser it winds up downloading the file at www.domain.com/download/filename.zip as expected. 

Now where I get confused is that include files don't seem to work like that with PHP.  If I do this...

Code: [Select]
require_once('/includes/config.php');

That winds up looking for an /includes folder all the way back at the local server root, not just the web root.  so it's looking for /var/includes instead of /var/www/includes and of course that doesn't end up working.

So, how come the include file paths work differently than regular HTML paths or header redirects in PHP?  Is there any simple way I can always refer to the SITE root no matter what server it's running from?  I've tried playing with $_SERVER['DOCUMENT_ROOT'] but it only seems to return the root of the current document, not the root of the whole site.  So if I use it within a php file located in /var/www/includes/test.php it considers /includes the root which is not what I want.

Any information would be greatly appreciated.  Thanks!