You could use the [`substr`](http://php.net/manual/en/function.substr.php) function to return a substring starting from the 5th character:

    $str = &quot;The quick brown fox jumps over the lazy dog.&quot;
    $str2 = substr($str, 4); // &quot;quick brown fox jumps over the lazy dog.&quot;

If you’re using a multi-byte character encoding and do not just want to remove the first four *bytes* like `substr` does, use the multi-byte counterpart [`mb_substr`](http://php.net/mb_substr). This does of course will also work with single-byte strings.

Is there a &#39;standard&#39; way to specify that a task continuation should run on the thread from which the initial task was created?

Currently I have the code below - it is working but keeping track of the dispatcher and creating a second Action seems like unnecessary overhead.

    dispatcher = Dispatcher.CurrentDispatcher;
    Task task = Task.Factory.StartNew(() =&gt;
    {
    	DoLongRunningWork();
    });
    
    Task UITask= task.ContinueWith(() =&gt;
    {
    	dispatcher.Invoke(new Action(() =&gt;
    	{
    		this.TextBlock1.Text = &quot;Complete&quot;; 
    	}
    });

Task continuation on UI thread

I&#39;m using Visual Studio 2010 and when I do a &quot;Find in Files&quot; the results are returned to the &quot;Find Results 1&quot; window which is docked below my code editor window.

Before, I would double click on one of the results in the Find Results window and the file I clicked on would open in the code editor panel.

The problem is now when I click on one of the results, it opens in the same panel as the Find Results window which happens to be much smaller than the code editor window which is annoying.

Does anyone know how to make it so that when I double click on the search results they open up in the code editor window again?

Thanks!

Visual Studio Clicking Find Results Opens Code in Wrong Window

How can I remove the first 4 characters of a string using PHP?

Remove first 4 characters of a string with PHP

<p>How can I remove the first 4 characters of a string using PHP?</p>


I&#39;m looking for the best way to check and see if any results were returned in a query. I feel like I write this part of code a lot and sometimes I get errors, and sometimes I don&#39;t.

For example, I run this query to check if a username exists before inserting a new one into the database.

    $result = mysql_query(&quot;SELECT * FROM ...&quot;);

Then I want to check and see if any results were returned. Here is one way I do it:

    if (!$result) { PERFORM ACTION }

If the first way doesn&#39;t work, then sometimes this will:

    if (mysql_num_rows($result)==0) { PERFORM ACTION }

Then I even saw that I could do it this way the other day:

    list($total) = mysql_fetch_row($result);
    if ($total==0) { PERFORM ACTION }


What is the best way to do this?

Best way to check if mysql_query returned any results?

how can I display an image retrieved using file_get_contents in php?

Do i need to modify the headers and just echo it or something?

Thanks!

Show image using file_get_contents

There is one very bad limit in PHP: if you call some function a1() that calls a2(), that calls a3... so when `a99()` will call `a100()` you will see

&gt; Fatal error: Maximum function nesting level of &#39;100&#39; reached, aborting!

Is there any way to increase the limit of 100 nesting calls to 500 or 10000?

This is critical for me because I&#39;m developing an event-based system with a lot of callbacks.

Increasing nesting function calls limit

In PHP, is there any difference between the `!=` and `&lt;&gt;` operators?

In the [manual][1], it states:

    $a != $b	Not equal	TRUE if $a is not equal to $b after type juggling.
    $a &lt;&gt; $b	Not equal	TRUE if $a is not equal to $b after type juggling.

I guess there are no huge differences but I&#39;m curious.

  [1]: http://php.net/manual/en/language.operators.comparison.php

Difference between &quot;not equal&quot; operators &lt;&gt; and != in PHP

I&#39;m trying to implement PayPal on my website.

I use this class: http://www.micahcarrick.com/php-paypal-ipn-integration-class.html

Right now I&#39;m testing using the PayPal sandbox. 

Here is the problem:

1. User makes payment  - ok
2. User returns to my website succesfully - ok
3. After a few seconds PayPal calls my website using IPN - ok
4. My class successfully validate incoming IPN data.
5. PayPal returns &quot;payment_status: Pending&quot; 

I don&#39;t know why PayPal IPN calls back with the payment status of &quot;pending&quot;?

Does anyone know what I&#39;m doing wrong?

Paypal IPN always return &quot;payment_status: Pending&quot; on sandbox?

I would like to extract all the numbers contained in a string. Which is better suited for the purpose, regular expressions or the `isdigit()` method?

Example:

    line = &quot;hello 12 hi 89&quot;

Result:

    [12, 89]


How to extract numbers from a string in Python?

I noticed that there was (at least on Mac OS X) both a `&lt;string.h&gt;` header and a `&lt;strings.h&gt;` header. [`man 3 string`](http://man7.org/linux/man-pages/man3/string.3.html) reveals that they contain different functions. Is there any reason for this?

Difference between &lt;string.h&gt; and &lt;strings.h&gt;

If I want to make my formatted string dynamically adjustable, I can change the following code from

    print &#39;%20s : %20s&#39; % (&quot;Python&quot;, &quot;Very Good&quot;)

to

    width = 20
    print (&#39;%&#39; + str(width) + &#39;s : %&#39; + str(width) + &#39;s&#39;) % (&quot;Python&quot;, &quot;Very Good&quot;)

However, it seems that string concatenation is cumbersome here. Any other way to simplify things?

Format string dynamically

How should I convert a post title to a slug in Ruby?

The title can have any characters, but I only want the slug to allow `[a-z0-9-_]` (Should it allow any other characters?).

So basically:

* downcase all letters
* convert spaces to hyphens
* delete extraneous characters

Ruby post title to slug

How can I insert a string at a specific index of another string? 

     var txt1 = &quot;foo baz&quot;

Suppose I want to insert &quot;bar &quot; after the &quot;foo&quot; how can I achieve that?

I thought of `substring()`, but there must be a simpler more straight forward way.

Insert a string at a specific index

I can use this:

    String str = &quot;TextX Xto modifyX&quot;;
    str = str.replace(&#39;X&#39;,&#39;&#39;);//that does not work because there is no such character &#39;&#39;


Is there a way to remove all occurrences of character `X` from a String in Java?

I tried this and is not what I want: `str.replace(&#39;X&#39;,&#39; &#39;); //replace with space`

Remove all occurrences of char from string

The following code will print 2

    String word = &quot;bannanas&quot;;
    String guess = &quot;n&quot;;
    int index;
    System.out.println(	
        index = word.indexOf(guess)
    );
I would like to know how to get all the indexes of &quot;n&quot; (&quot;guess&quot;) in the string &quot;bannanas&quot;

The expected result would be: `[2,3,5]`

Indexes of all occurrences of character in a string

For example, there is a string val `s = &quot;Test&quot;`. How do you separate it into `t, e, s, t`?

How to split strings into characters in Scala

I want to display a Unicode character in Java.  If I do this, it works just fine:
		
`String symbol = &quot;\u2202&quot;;`

symbol is equal to &quot;∂&quot;.  That&#39;s what I want.

The problem is that I know the Unicode number and need to create the Unicode symbol from that.  I tried (to me) the obvious thing:

    int c = 2202;
    String symbol =  &quot;\\u&quot; + c;

However, in this case, symbol is equal to &quot;\u2202&quot;.  That&#39;s not what I want.

How can I construct the symbol if I know its Unicode number (but only at run-time---I can&#39;t hard-code it in like the first example)?


Creating Unicode character from its number

For example I have a user input a phone number.

    cout &lt;&lt; &quot;Enter phone number: &quot;;
    INPUT: (555) 555-5555
    cin &gt;&gt; phone;

I want to remove the &quot;(&quot;, &quot;)&quot;, and &quot;-&quot; characters from the string. I&#39;ve looked at the string remove, find and replace functions however I only see that they operate based on position.

Is there a string function that I can use to pass a character, &quot;(&quot; for example, and have it remove all instances within a string?


Content Type	Original Author	Original Content on Stackoverflow
Question	Belgin Fish	View Question on Stackoverflow
Solution 1 - Php	Daniel Vandersluis	View Answer on Stackoverflow
Solution 2 - Php	Gumbo	View Answer on Stackoverflow

Remove first 4 characters of a string with PHP

Php Problem Overview

Php Solutions

Solution 1 - Php

Solution 2 - Php

Visual Studio Clicking Find Results Opens Code in Wrong Window

Task continuation on UI thread

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