What is the difference between in php function    A parameter passage by variable A parameter pass by reference?
31080
Are PHP variables passed by value or by reference?
106804
Possible Duplicate:          Is there any major and fundamental difference between these two functions in PHP?
7923
template&lt;typename T, size_t n&gt; size_t array_size(const T (&amp;)[n]) {     return n; }   The part that I don't get is the parameters for this template function. What happens with the array when I pass it through there that gives n as the number of elements in the array?
121834
How are callbacks written in PHP?
40116
I am trying to understand when and why I should use the global $post variable. I have tried to do the following on a post page, outside the loop, and as expected it works.      &lt;?php          global $post;         echo $post-&gt;ID;     ?&gt;   If I do the same on an archive page (just wanted to see what happens), for some reason it also works, retrieving the ID of the previous post, even if I deleted the code above from the previous post page.  Is this like some kind of caching? How does this work exactly?  I understand global $post can be useful if I'm working on a fuction in functions.php. Is this the only use case?  Many thanks
9556
What is the difference between a function decorated with  and one decorated with ?
111654
I just . Namely, the C++ function:  void returnCharPtr(char * someString, int n);   cannot return any CharPtr because the someString pointer is passed by value. Also, the intent of the author was clear:      So, another option is to pass the parameter as an argument, so you process your string in a function but don't create a new copy.   But as the change was rejected (3 vs 2) the post stayed in an incorrect state (IMHO).   I left a comment to the author. Can I argue with the editors' decision?
81036
Are $_SESSION variables stored on the client or the server?
83195
Could someone give me a hint on this question, which is a past exam question:     Under what circumstances will an entering variable in the network simplex method be the same as the leaving variable?   Thank you for your help.
55008
Is there a PHP function to find out the name of the caller function in a given function?
67765
I'm looking for the name of the PHP function to build a query string from an array of key value pairs. Please note, I am looking for the built in PHP function to do this, not a homebrew one (that's all a google search seems to return). There is one, I just can't remember its name or find it on php.net. IIRC its name isn't that intuitive.
53456
What is the difference between:  some_list1 = [] some_list1.append("something")   and  some_list2 = [] some_list2 += ["something"]
3978
What's the difference between  var A = function () {     this.x = function () {         //do something     }; };   and  var A = function () { }; A.prototype.x = function () {     //do something };
46765
Take the below code:  private void anEvent(object sender, EventArgs e) {     //some code }     What is the difference between the following ?  [object].[event] += anEvent;  //and  [object].[event] += new EventHandler(anEvent);   [UPDATE]  Apparently, there is no difference between the two...the former is just syntactic sugar of the latter.
31772
Is a way to pass my own parameters to the function in add_filter or add_action. For example take a look in the following code:  function my_content($content, $my_param) { do something... using $my_param here ... return $content; } add_filter('the_content', 'my_content', 10, 1);   Can I pass my own parameter? something like:  add_filter('the_content', 'my_content($my_param)', 10, 1)   or  add_filter('the_content', 'my_content', 10, 1, $my_param)
115517
I wanted to suggest an edit for  given to , but it was denied because "Edits must be at least 6 characters."  However, given the edit I was suggesting is very important to the syntax of the solution, I think it is relevant even though it contains only 3 characters. See the answer posted by knittl and notice the variable $value is used as both function input and in the foreach loop. I simply suggested changing the function parameter's name to $values in the 3 locations it is used, but was denied, leaving the post incorrect.  Note: I do realize I could have suggested an entirely different variable name thus allowing the edit, but similar situations have arisen in the past where a simple fix of just a few characters make a significant difference. After all, Stack Overflow is a coding website and syntax is very important.
56680
I've seen both the blocks of code in use several different times, personally I have always used the first but my question is: is there a functional difference, and if there is what is it?  while (condition is true ) {     // do something }  do {     // do something } while ( condition is true);   I will be applying this to PHP but I assume this is fairly language agnostic.