PHP - Preg_match An Array As Pattern

I am using preg_match() to perform a url regular expression match for a video embed function. I have provided the third parameter of preg_match ($matches) therefore $matches[0] should contain the text that matched the full pattern, however I have noticed in the code example below, that the space after the query component of the specified url together with the first word after the space is captured and stored in $matches[0] as well.

$UserInput = "This is my video embed,  http://www.youtube.com/watch?v=GXHijTS9_2g check it out .";
preg_match('@http:\/\/(?:www.)?(\w*).com\/watch\?v=(\w*\W?\w*)@', $UserInput, $matches);

var_dump($matches) provides the output below:

array (size=4)
  0 => string 'http://www.youtube.com/watch?v=GXHijTS9_2g check' (length=48)
  1 => string '' (length=0)
  2 => string 'youtube' (length=7)
  3 => string 'GXHijTS9_2g check' (length=17)

What am I missing in the regex?   Thanks.
Edited by terungwa, 23 August 2014 - 05:41 AM.

Hey guys.  So I'm trying to write a script that replaces footnote citations in one format with footnote citations in another format.

For example, the text will read:   "Then he went down the street.[1] That is where the police found him [2].  They immediately arrested him at the house. [3]"

And I would like the script to find the [ #] strings and replace them with {#} ... so that the string reads:
"Then he went down the street.{1} That is where the police found him {2}.  They immediately arrested him at the house. {3}"

Note that there will be double, and even tripple, digit footnotes, so the script has to be able to recognize [##] or [###] and replace the brackets with {} accordingly.

I'm not really sure how to do this, since the "pattern" is constantly changing depending on the number between the brackets.  Ideas?

Thanks!

Hello, I am a bit confused on the preg_match subject.

here is a snippet where I use the preg_match func:

Code: [Select]
<?php 
foreach ($bans as $ban){

$curbans = $ban["user_steamid"];

if(isset($_POST['submit2'])) {
$_SESSION['isbanned'] = preg_match('/'.$_SESSION['inputid'].'/i', $curbans)
}
};
?>

The array, $curbans, looks like this

Code: [Select]
STEAM_0:1:25941882STEAM_0:1:37863673STEAM_0:0:49096012STEAM_0:0:31113930
How would I get it to match something like "STEAM_0:0:49096012" with a value in the array?

I have a questions regarding Singleton Pattern in this video: http://www.youtube.com/watch?v=-uLbG7nJCJw&feature=plcp&context=C49f92beVDvjVQa1PpcFMxdGEHDoxYON2LEGpH0krK5UV1HfoVHGM=

Using the singleton pattern, isn't possible to have methods that aren't static? In this video it shows nothing but static methods. Also, after creating the class object like so:

$database = Database:Connect();

How would I go about using normal functions with that object? Say I had a query function. I can't do this:

$database->query();

So what would I do? :/ - Thanks for any help regarding this.

So I was stumbling around with Repositories and Interfaces and got a decent grasp on it. However, I started running into abstraction and started to implement a little bit of the Factory design.   How often is this typically used? It seems like I should be using  Factory with 90% of my Repositories since there are different types of Items, Tutorials, Random Events, etc.   Items - Food - Weapon - Toy   Tutorials - Newbie - Farming   Random Events - Coin Giving - Item Giving - Item Draining   Things like this... so all of them have similar methods involved. So they each have a base method, for example.. an Item child class would always have the use() method and a factory would determine which kind of object to initiate from your controller just from the item model being passed through. So therefore you can call use() on the repository instance it returns. Then I was moving onto my tutorials and random events and it just seemed very similar.   So in most cases, will factories be a huge plus? Just wanted some general opinions from the PHP developers =) Thanks!