No, you can&#39;t.

But you could declare it as a static property.

    public static $MYARRAY = array(&#39;123&#39;, &#39;234&#39;);

*---------------Update-----------------------------*

**Array const is available from PHP 5.6.** 

 [php.net/manual/en/migration56.new-features.php][1]


  [1]: http://php.net/manual/en/migration56.new-features.php

UPDATE:

This is now available in PHP 5.6 https://php.net/manual/en/migration56.new-features.php


-----------

No you can&#39;t assign an Array to PHP constant.

In http://www.php.net/manual/en/language.constants.syntax.php
&gt; Constants may only evaluate to scalar values

This is the reason.

Scalar values for examples are `int`, `float`, `string`

I was looking to using the [Twitter Bootstrap Modal windows][1] as a partial view.  However, I do not really think that it was designed to be used in this fashion; it seems like it was meant to be used in a fairly static fashion.  Nevertheless, I think it&#39;d be cool to be able to use it as a partial view.

So for example, let&#39;s say I have a list of Games.  Upon clicking on a link for a given game, I&#39;d like to request data from the server and then display information about that game in a modal window &quot;over the top of&quot; the present page.

I&#39;ve done a little bit of research and found [this post](https://stackoverflow.com/questions/10626885/passing-data-to-a-bootstrap-modal) which is similar but not quite the same.  

Has anyone tried this with success or failure?  Anyone have something on jsFiddle or some source they&#39;d be willing to share?

Thanks for your help.


  [1]: http://twitter.github.com/bootstrap/javascript.html

Using Bootstrap Modal window as PartialView

I&#39;m using pymongo and I can&#39;t figure out how to execute the mongodb interactive shell equivalent of &quot;show dbs&quot;.

how to issue a &quot;show dbs&quot; from pymongo

&gt; **Possible Duplicate:**  
&gt; [Is it possible to declare an array as constant](https://stackoverflow.com/questions/3803349/is-it-possible-to-declare-an-array-as-constant)  

&lt;!-- End of automatically inserted text --&gt;

Is it possible to use an array as a class constant in [PHP][1]?

I.e 

    const MYARRAY = array(&#39;123&#39;, &#39;234&#39;);

If not why?


  [1]: http://www.php.net/

PHP - use array as class constant

> Possible Duplicate: 
> <a href="https://stackoverflow.com/questions/3803349/is-it-possible-to-declare-an-array-as-constant" target="_blank" rel="noopener noreferrer">Is it possible to declare an array as constant</a>

Is it possible to use an array as a class constant in <a href="http://www.php.net/" target="_blank" rel="noopener noreferrer">PHP</a>?
I.e
<pre><code class="hljs language-ini">const MYARRAY = array('123', '234');
</code></pre>
If not why?

I have the following array in PHP:

    Array
    (
        [0] =&gt; Array
            (
                [id] =&gt; 0
                [name] =&gt; name1
                [short_name] =&gt; n1
            )
    
        [2] =&gt; Array
            (
                [id] =&gt; 2
                [name] =&gt; name2
                [short_name] =&gt; n2
            )
    )

I want to JSON encode it as a JSON array, producing a string like the following:

    [  
        {  
            &quot;id&quot;:0,
            &quot;name&quot;:&quot;name1&quot;,
            &quot;short_name&quot;:&quot;n1&quot;
        },
        {  
            &quot;id&quot;:2,
            &quot;name&quot;:&quot;name2&quot;,
            &quot;short_name&quot;:&quot;n2&quot;
        }
    ]

But when I call [`json_encode`][1] on this array, I get the following:

    {  
        &quot;0&quot;:{  
            &quot;id&quot;:0,
            &quot;name&quot;:&quot;name1&quot;,
            &quot;short_name&quot;:&quot;n1&quot;
        },
        &quot;2&quot;:{  
            &quot;id&quot;:2,
            &quot;name&quot;:&quot;name2&quot;,
            &quot;short_name&quot;:&quot;n2&quot;
        }
    }

Which is an object instead of an array.

How can I get `json_encode` to encode my array as an array, instead?

  [1]: http://uk3.php.net/json_encode

json_encode PHP array as JSON array not JSON object

From my controllers, I access the application parameters (those in `/app/config`) with

    $this-&gt;container-&gt;getParameter(&#39;my_param&#39;)

But I don&#39;t know how to access it from a service (I imagine my service class is not supposed to extend `Symfony\Bundle\FrameworkBundle\Controller\Controller`).

Should I map needed parameters into my service registration like this:

    #src/Me/MyBundle/Service/my_service/service.yml
    parameters:
        my_param1: %my_param1%
        my_param2: %my_param2%
        my_param3: %my_param3%

or something similar? How should I access to my application parameters from a service?

---

[This question](https://stackoverflow.com/q/13901256/305189) seems like the same but mine actually answers to it (parameters from a controller), I&#39;m talking about accessing from a service.

How to access an application parameters from a service?

Quickie...

Is there a way to retrieve the path of a file created by `tmpfile()`?

Or do I need to do it myself with `tempnam()`?

Retrieve path of tmpfile()

&gt; **Possible Duplicate:**  
&gt; [Check if a variable is empty](https://stackoverflow.com/questions/2659837/check-if-a-variable-is-empty)  

&lt;!-- End of automatically inserted text --&gt;

Simple PHP question:

I have this stement:

    if (isset($_POST[&quot;password&quot;]) &amp;&amp; ($_POST[&quot;password&quot;]==&quot;$password&quot;)) {
    ...//IF PASSWORD IS CORRECT STUFF WILL HAPPEN HERE
    }

Somewhere above this statement I use the following line in my JavaScript to set the username as a variable both in my JavaScript and in my PHP:

    uservariable = &lt;?php $user = $_POST[&#39;user&#39;]; print (&quot;\&quot;&quot; . $user . &quot;\&quot;&quot;)?&gt;;

What I want to do is add a condition to make sure $user is not null or an empty string (it doesn&#39;t have to be any particular value, I just don&#39;t want it to be empty. What is the proper way to do this?

I know this is a sill question but I have no experience with PHP. Please advise, Thank you!



What is the PHP syntax to check &quot;is not null&quot; or an empty string?

My array looks like this:

    array(
      0 =&gt; &#39;val&#39;,
      2 =&gt; &#39;val&#39;,
      3 =&gt; &#39;val&#39;,
      5 =&gt; &#39;val&#39;,
      7 =&gt; &#39;val&#39;
    );

How can I reset the keys so it will go like `0, 1, 2, 3, 4`?

How to reindex an array?

Is there any way to find a size of an array?

For Example,

    CREATE TABLE example (id integer[]) ;
    
    INSERT INTO example VALUES ( &#39;{}&#39;);
    
    INSERT INTO example VALUES ( &#39;{5,6,7}&#39;);

From this, is there any possibilities to get a result like following,


    size
    
    0
    
    3


How to find the size of an array in postgresql

I have to store some constant values (UUIDs) in byte array form in java, and I&#39;m wondering what the best way to initialize those static arrays would be. This is how I&#39;m currently doing it, but I feel like there must be a better way.

    private static final byte[] CDRIVES = new byte[] { (byte)0xe0, 0x4f, (byte)0xd0,
        0x20, (byte)0xea, 0x3a, 0x69, 0x10, (byte)0xa2, (byte)0xd8, 0x08, 0x00, 0x2b,
        0x30, 0x30, (byte)0x9d };
    private static final byte[] CMYDOCS = new byte[] { (byte)0xba, (byte)0x8a, 0x0d,
        0x45, 0x25, (byte)0xad, (byte)0xd0, 0x11, (byte)0x98, (byte)0xa8, 0x08, 0x00,
        0x36, 0x1b, 0x11, 0x03 };
    private static final byte[] IEFRAME = new byte[] { (byte)0x80, 0x53, 0x1c,
        (byte)0x87, (byte)0xa0, 0x42, 0x69, 0x10, (byte)0xa2, (byte)0xea, 0x08,
        0x00, 0x2b, 0x30, 0x30, (byte)0x9d };
    ...
    and so on

Is there anything I could use that may be less efficient, but would look cleaner?
for example:

    private static final byte[] CDRIVES =
        new byte[] { &quot;0xe04fd020ea3a6910a2d808002b30309d&quot; };

How do I initialize a byte array in Java?

In my recent [work][1] with `Gibbs sampling`, I&#39;ve been making great use of the [`RVar`][2] which, in my view, provides a near ideal interface to random number generation.  Sadly, I&#39;ve been unable to make use of Repa due to the inability to use monadic actions in maps.

While clearly monadic maps can&#39;t be parallelized in general, it seems to me that `RVar` may be at least one example of a monad where effects can be safely parallelized (at least in principle; I&#39;m not terribly familiar with the inner workings of `RVar`). Namely, I want to write something like the following,

    drawClass :: Sample -&gt; RVar Class
    drawClass = ...

    drawClasses :: Array U DIM1 Sample -&gt; RVar (Array U DIM1 Class)
    drawClasses samples = A.mapM drawClass samples

where `A.mapM` would look something like,

    mapM :: ParallelMonad m =&gt; (a -&gt; m b) -&gt; Array r sh a -&gt; m (Array r sh b)

While clearly how this would work depends crucially on the implementation of `RVar` and its underlying `RandomSource`, in principle one would think that this would involve drawing a new random seed for each thread spawned and proceeding as usual.

Intuitively, it seems that this same idea might generalize to some other monads.

So, my question is: Could one construct a class `ParallelMonad` of monads for which effects can be safely parallelized (presumably inhabited by, at the least, `RVar`)? 

What might it look like? What other monads might inhabit this class? Have others considered the possibility of how this might work in Repa?

Finally, if this notion of parallel monadic actions can&#39;t be generalized, does anyone see any nice way to make this work in the specific case of `RVar` (where it would be very useful)? Giving up `RVar` for parallelism is a very difficult trade-off.


  [1]: https://github.com/bgamari/mixture-model
  [2]: http://hackage.haskell.org/packages/archive/rvar/0.2.0.1/doc/html/Data-RVar.html


Parallel mapM on Repa arrays

Using Postgres 9.0, I need a way to test if a value exists in a given array. So far I came up with something like this:

    select &#39;{1,2,3}&#39;::int[] @&gt; (ARRAY[]::int[] || value_variable::int)

But I keep thinking there should be a simpler way to this, I just can&#39;t see it. This seems better:
   
    select &#39;{1,2,3}&#39;::int[] @&gt; ARRAY[value_variable::int]

I believe it will suffice. But if you have other ways to do it, please share!

Check if value exists in Postgres array

On my Linux (and OS X) machines, the `iconv()` function has this prototype:

    size_t iconv (iconv_t, char **inbuf...

while on FreeBSD it looks like this:

    size_t iconv (iconv_t, const char **inbuf...

I would like my C++ code to build on both platforms. With C compilers, passing a `char**` for a `const char**` parameter (or vice versa) typically emits a mere warning; however in C++ it&#39;s a fatal error. So if I pass a `char**`, it won&#39;t compile on BSD, and if I pass a `const char**` it won&#39;t compile on Linux / OS X. How can I write code that compiles on both, without resorting to trying to detect the platform?

One (failed) idea I had was to provide a local prototype that overrides any provided by the header:

    void myfunc(void) {
        size_t iconv (iconv_t, char **inbuf);
        iconv(foo, ptr);
    }

This fails because `iconv` needs C linkage, and you cannot put `extern &quot;C&quot;` within a function (why not?)

The best working idea I&#39;ve come up with is to cast the function pointer itself:

    typedef void (*func_t)(iconv_t, const char **);
    ((func_t)(iconv))(foo, ptr);

but this has the potential to mask other, more serious errors.

How can I portably call a C++ function that takes a char** on some platforms and a const char** on others?

&gt; **Possible Duplicate:**  
&gt; [Does a const reference prolong the life of a temporary?](https://stackoverflow.com/questions/2784262/does-a-const-reference-prolong-the-life-of-a-temporary)  

&lt;!-- End of automatically inserted text --&gt;

My compiler doesn&#39;t complain about assigning temporary to const reference:

    string foo() {
      return string(&quot;123&quot;);
    };
    
    int main() {
      const string&amp; val = foo();
      printf(&quot;%s\n&quot;, val.c_str());
      return 0;
    }

Why? I thought that string returned from `foo` is temporary and val can point to object which lifetime has finished. Does C++ standard allow this and prolongs the lifetime of returned object?

Returning temporary object and binding to const reference

I do not understand the difference between these two statements in my C++ class:

    class MyClass {
      public:
      private:
         static const int var = 0;            // Option 1
         const static int var = 0;            // Option 2
    };

What is the difference b/w Option 1 and Option 2?? They both compile. 


static const vs. const static

A program I am working on has many constants that apply throughout all classes. I want to make one header file &quot;Constants.h&quot;, and be able to declare all the relevant constants. Then in my other classes, I can just include `#include &quot;Constants.h`. 

I got it to work fine using `#ifndef ` ... `#define ...` syntax. However, I would prefer to use the `const int...` form of constants. I&#39;m not quite sure how to though. 

Define constant variables in C++ header

We always write: 

    public static final int A = 0;  

Question:  
  
1. Is `static final` the only way to declare a **constant** in a class?  
2. If I write `public final int A = 0;` instead, is `A` still a **constant** or just an **instance field**?  
3. What is an **instance variable**? What&#39;s the difference between an **instance variable** and an **instance field**?

Content Type	Original Author	Original Content on Stackoverflow
Question	Martin	View Question on Stackoverflow
Solution 1 - Php	xdazz	View Answer on Stackoverflow
Solution 2 - Php	Alvin Wong	View Answer on Stackoverflow

PHP - use array as class constant

Php Problem Overview

Php Solutions

Solution 1 - Php

Solution 2 - Php

how to issue a "show dbs" from pymongo

Using Bootstrap Modal window as PartialView

Attributions