Yes, [use a closure][1]:

    functionName($someArgument, function() use(&amp;$variable) {
      $variable = &quot;something&quot;;
    });

Note that in order for you to be able to modify `$variable` and retrieve the modified value outside of the scope of the anonymous function, it must be referenced in the closure using `&amp;`.


  [1]: http://php.net/closure

If your function is short and one-linear, you can use [arrow functions](https://wiki.php.net/rfc/arrow_functions_v2), as of PHP 7.4:

```
$variable = &quot;nothing&quot;;
functionName($someArgument, fn() =&gt; $variable = &quot;something&quot;);
```


Xcode has stopped being able to run my app, it started directly after I deleted it from the device and attempted to re-install by rerunning it in Xcode (something I&#39;ve done hundreds of times before).

It says

&gt;&quot;Could not launch XXX.app&quot;
&gt;
&gt;&quot;No such file or directory (/Users/Mylaptop/Library/Developer/Xcode/DerivedData/MyApp-ekxcbebfpzkahtfkujyqkcwprzia/Build/Products/Debug-iphoneos/MyApps.app/MyApp).&quot;

I&#39;ve rebooted the phone, relaunched Xcode, cleaned everything, rebuilt everything. This error message won&#39;t go away.

This is with Xcode 4.5 which I&#39;ve been using since it became available, if I revert to 4.3.2 then Xcode says &quot;Finished running app&quot; but it doesn&#39;t actually do anything - the app is neither installed nor run.

I&#39;m completely stuck - unable to run anything on the device anymore.

Any suggestions?


Xcode suddenly stopped running project on hardware: &quot;Could not launch xxx.app: .. No such file..&quot;

I was under the impression that accessing a `union` member other than the last one set is UB, but I can&#39;t seem to find a solid reference (other than answers claiming it&#39;s UB but without any support from the standard).

So, is it undefined behavior?

Accessing inactive union member and undefined behavior?

I was playing around with anonymous functions in PHP and realized that they don&#39;t seem to reach variables outside of them.
Is there any way to get around this problem?

Example:

    $variable = &quot;nothing&quot;;

    functionName($someArgument, function() {
      $variable = &quot;something&quot;;
    });

    echo $variable;  //output: &quot;nothing&quot;

This will output &quot;nothing&quot;. Is there any way that the anonymous function can access the `$variable`?


PHP variables in anonymous functions

I was playing around with anonymous functions in PHP and realized that they don't seem to reach variables outside of them.
Is there any way to get around this problem?
Example:
<pre><code class="hljs language-ini">$variable = "nothing";

functionName($someArgument, function() {
 $variable = "something";
});

echo $variable; //output: "nothing"
</code></pre>
This will output "nothing". Is there any way that the anonymous function can access the <code>$variable</code>?

**Without foreach**, 
how can I turn an array like this

    array(&quot;item1&quot;=&gt;&quot;object1&quot;, &quot;item2&quot;=&gt;&quot;object2&quot;,.......&quot;item-n&quot;=&gt;&quot;object-n&quot;);

to a string like this

    item1=&#39;object1&#39;, item2=&#39;object2&#39;,.... item-n=&#39;object-n&#39;

I thought about `implode()` already, but it doesn&#39;t implode the key with it.

If foreach it necessary, is it possible to not nest the foreach? 

**EDIT:** I&#39;ve changed the string


----------


**EDIT2/UPDATE:** 
This question was asked quite a while ago. At that time, I wanted to write everything in one line so I would use ternary operators and nest built in function calls in favor of foreach. That was not a good practice! Write code that is readable, whether it is concise or not doesn&#39;t matter that much.

In this case: putting the foreach in a function will be much more readable and modular than writing a one-liner(Even though all the answers are great!).


How to implode array with key and value without foreach in PHP

I have a description field in my MySQL database, and I access the database on two different pages, one page I display the whole field, but on the other, I just want to display the first 50 characters.  If the string in the description field is less than 50 characters, then it won&#39;t show ... , but if it isn&#39;t, I will show ... after the first 50 characters.

Example (Full string):

    Hello, this is the first example, where I am going to have a string that is over 50 characters and is super long, I don&#39;t know how long maybe around 1000 characters. Anyway this should be over 50 characters now ...
Exmaple 2 (first 50 characters):

    Hello, this is the first example, where I am going ...


Add ... if string is too long PHP

Is it possible to concatenate strings, as follows? And if not, what is the alternative of doing so?

    while ($personCount &lt; 10) {
        $result += $personCount . &quot;person &quot;;
    }

    echo $result;

It should appear like `1 person 2 person 3` person, etc.

You can’t use the `+` sign in concatenation, so what is the alternative?





PHP string concatenation

I am encoding the URL suffix of my application:

    $url = &#39;subjects?_d=1&#39;;
    echo base64_encode($url);

    // Outputs
    c3ViamVjdHM/X2Q9MQ==

Notice the slash before &#39;X2&#39;.

Why is this happening?  I thought base64 only outputted A-Z, 0-9 and &#39;=&#39; as padding?

Why is base64_encode() adding a slash &quot;/&quot; in the result?

Below query I&#39;m executing in Ubuntu 12, MySQL 5.1 version and receiving error as mentioned:

    CREATE TABLE mantis_config_table (
        config_id VARCHAR(64) NOT NULL,
        project_id INTEGER NOT NULL DEFAULT 0,
        user_id INTEGER NOT NULL DEFAULT 0,
        access_reqd INTEGER DEFAULT 0,
        type INTEGER DEFAULT 90,
        value LONGTEXT NOT NULL,
        PRIMARY KEY (config_id, project_id, user_id)
    ) TYPE=MyISAM;

&gt; You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near &#39;TYPE=MyISAM&#39; at line 9

Can anyone suggest what&#39;s wrong? 

mysql error &#39;TYPE=MyISAM&#39;

How do I show the definition of a function in zsh? `type foo` doesn&#39;t give the definition.&lt;p&gt;
In bash:

    bash$ function foo() { echo hello; }

    bash$ foo
    hello

    bash$ type foo
    foo is a function
    foo () 
    { 
        echo hello
    }

In zsh:

    zsh$ function foo() { echo hello; }

    zsh$ foo
    hello

    zsh$ type foo
    foo is a shell function

How to show zsh function definition (like bash &quot;type myfunc&quot;)?

The problem is that `!=` does not work as a function in excel vba.

I want to be able to use 

`If strTest != &quot;&quot; Then` instead of `If strTest = &quot;&quot; Then`

Is there another approach to do this besides `!=`?


My function to mimic `!=` is 


    Sub test()
    
    Dim intTest As Integer
    Dim strTest As String
    
    intTest = 5
    
    strTest = CStr(intTest) &#39; convert
    
    Range(&quot;A&quot; + strTest) = &quot;5&quot;
    
    
    
        For i = 1 To 10
            Cells(i, 1) = i
            
            If strTest = &quot;&quot; Then
                Cells(i, 1) = i
            End If
    
        Next i
    
    
    End Sub







What is the equivalent of &quot;!=&quot; in Excel VBA?

In python I can do this:

&lt;!-- language: lang-py --&gt;

    def f((a, b)):
        return a + b

    d = (1, 2)
    f(d)

Here the passed in tuple is being decomposed while its being passed to `f`.

Right now in scala I am doing this:

&lt;!-- language: lang-scala --&gt;

    def f(ab: (Int, Int)): Int = {
        val (a, b) = ab
        a + b
    }

    val d = (1, 2)
    f(d)

Is there something I can do here so that the decomposition happens while the arguments are passed in? Just curious.


Decomposing tuples in function arguments

I&#39;ve been trying Vim for any text editing work for almost a week now. I want to know the fastest way to select a C function definition.

For example, if I have a function like this:

```c
void helloworlds( int num )
{
    int n;
    for ( n = 0; n &lt; num; ++n ) {
        printf( &quot;Hello World!\n&quot; );
    }
}
```

How would I be able to delete the whole definition including the function name?

Selecting entire function definition in Vim

I find the named parameters feature in C# quite useful in some cases.

    calculateBMI(70, height: 175);

What can I use if I want this in JavaScript? 

---

What I don’t want is this:

    myFunction({ param1: 70, param2: 175 });

    function myFunction(params){
      // Check if params is an object
      // Check if the parameters I need are non-null
      // Blah blah
    }

That approach I’ve already used. Is there another way?

I’m okay using any library to do this.

Is there a way to provide named parameters in a function call in JavaScript?

Is defining JavaScript variables inside if-statements correct?

    if(a==1){
        var b = 1;
    } else {
        var b = 0;
    }

I know the code above will work, however, WebMatrix highlights the variables.

Should I define the variables outside the if-statement? Or the first option&#39;s correct? Or it doesn&#39;t really matter?

    var b = &#39;&#39;;
    if(a==1){
        b = 1;
    } else {
        b = 0;
    }

Defining JavaScript variables inside if-statements

I have this code(which doesn&#39;t give me expected result)

    #subject_content.html
    {% block main-menu %}
    	{% include &quot;subject_base.html&quot; %}
    {% endblock %}
    

    #subject_base.html
    ....
    ....
    	&lt;div id=&quot;homework&quot; class=&quot;tab-section&quot;&gt;
    		&lt;h2&gt;Homework&lt;/h2&gt;
    			{% include &quot;subject_file_upload.html&quot; %}
    	&lt;/div&gt;
child template:
    
    #subject_file_upload.html
    	&lt;form action=&quot;.&quot; method=&quot;post&quot; enctype=&quot;multipart/form-data&quot;&gt;{% csrf_token %}
    		{{ form.as_p }}
    		&lt;input type=&quot;submit&quot; value=&quot;submit&quot;&gt;
    	&lt;/form&gt;

and my view

    #views.py
    @login_required
    def subject(request,username, subject):
        if request.method == &quot;POST&quot;:
            form = CarsForm(request.POST, request.FILES)
            if form.is_valid():
                form.save()
                return HttpResponseRedirect(&quot;/&quot;)
        form = CarsForm()
        return render_to_response(&#39;subject_content.html&#39;, {&#39;form&#39;:form}, context_instance=RequestContext(request))

The above code creates HTML in the way I want it to be, however the form does not update database.

BUT,

If I skip the middle template and go directly to the uploading form, it works fine:

    #subject_content.html
    {% block main-menu %}
    	{% include &quot;subject_file_upload.html&quot; %}
    {% endblock %}

Help me please to make it work with middle template. 
I want to do this, because I don&#39;t wan&#39;t to type the same code more than once. 



Assign variables to child template in {% include %} tag Django

How can I assign the same value for multiple variables in PHP at once ?

I have something like:

    $var_a = &#39;A&#39;;
    $var_b = &#39;A&#39;;
    $same_var = &#39;A&#39;;
    $var_d = &#39;A&#39;;
    $some_var =&#39;A&#39;;

In my case, I can&#39;t rename all variables to have the same name (that would make things more easy), so is there any way to assign the same value to all variables in a much more compact way?

Assign same value to multiple variables at once?

I&#39;m trying to pass a variable into an *include* file. My host changed PHP version and now whatever solution I try doesn&#39;t work.

I think I&#39;ve tried every option I could find. I&#39;m sure it&#39;s the simplest thing!

The variable needs to be set and evaluated from the calling first file (it&#39;s actually `$_SERVER[&#39;PHP_SELF&#39;]`, and needs to return the path of that file, not the included `second.php`).


**OPTION ONE**

In the first file:

    global $variable;
    $variable = &quot;apple&quot;;
    include(&#39;second.php&#39;);

In the second file:

    echo $variable;


**OPTION TWO**

In the first file:

    function passvariable(){
        $variable = &quot;apple&quot;;
        return $variable;
    }
    passvariable();


**OPTION THREE**

    $variable = &quot;apple&quot;;
    include &quot;myfile.php?var=$variable&quot;; // and I tried with http: and full site address too.
 

    $variable = $_GET[&quot;var&quot;]
    echo $variable

None of these work for me. PHP version is 5.2.16.

What am I missing?

Thanks!

PHP pass variable to include

I want to execute a stored procedure in SQL Server and assign the output to a variable (it returns a single value) ?

How to return the output of stored procedure into a variable in sql server

JSLint is not passing this as a valid code:

    /* global someVar: false */
    if (typeof someVar === &quot;undefined&quot;) {
        var someVar = &quot;hi!&quot;;
    }

What is the correct way?

What is the correct way to check if a global variable exists?

I have a problem where i&#39;m initialising a variable on the scope in a controller. Then it gets changed in another controller when a user logs in. This variable is used to control things such as the navigation bar and restricts access to parts of the site depending on the type of user, so its important that it holds its value. The problem with it is that the controller that initialises it, gets called again by angular some how and then resets the variable back to its initial value. 

I assume this is not the correct way of declaring and initialising global variables, well its not really global, so my question is what is the correct way and is there any good examples around that work with the current version of angular?

Global variables in AngularJS

I&#39;m developing a package in R. I have a bunch of functions, some of them need some global variables. How do I manage global variables in packages?

I&#39;ve read something about environment, but I do not understand how it will work, of if this even is the way to go about the things.

Global variables in packages in R

What is the reason of having globals() function in Python? It only returns dictionary of global variables, which are already global, so they can be used anywhere... I&#39;m asking only out of curiosity, trying to learn python.

    def F():
        global x
        x = 1

    def G():
        print(globals()[&quot;x&quot;]) #will return value of global &#39;x&#39;, which is 1

    def H():
        print(x) #will also return value of global &#39;x&#39;, which, also, is 1

    F()
    G()
    H()

I can&#39;t really see the point here? Only time I would need it, was if I had local and global variables, with same name for both of them

    def F():
        global x
        x = 1

    def G():
        x = 5
        print(x) #5
        print(globals()[&quot;x&quot;]) #1
    
    F()
    G()

But you should never run into a problem of having two variables with same name, and needing to use them both within same scope.

Reason for globals() in Python?

I have a third party Java library which an object with interface like this:

    public interface Handler&lt;C&gt; {
      void call(C context) throws Exception;
    }

How can I concisely implement it in Kotlin similar to Java anonymous class like this:

    Handler&lt;MyContext&gt; handler = new Handler&lt;MyContext&gt; {
       @Override
       public void call(MyContext context) throws Exception {
          System.out.println(&quot;Hello world&quot;);
       }
    }

    handler.call(myContext) // Prints &quot;Hello world&quot;

Content Type	Original Author	Original Content on Stackoverflow
Question	einord	View Question on Stackoverflow
Solution 1 - Php	nickb	View Answer on Stackoverflow
Solution 2 - Php	MAChitgarha	View Answer on Stackoverflow

PHP variables in anonymous functions

Php Problem Overview

Php Solutions

Solution 1 - Php

Solution 2 - Php

Accessing inactive union member and undefined behavior?

Xcode suddenly stopped running project on hardware: "Could not launch xxx.app: .. No such file.."

Attributions