Select from string till next char is English char
<p>I have a simple question, I'm newbie in PHP. </p>

<p>I have this sample string in PHP: </p>

<pre><code>this is a test sample thing 
text @INEEDTOCHANGEHERE blah blah blah 
this is a test sample thing 
text @INEEDTOCHANGEHERE blah blah blah 
this is a test sample thing 
text @INEEDTOCHANGEHERE blah blah blah 
...
</code></pre>

<p>I need to change all the "<strong>INEEDTOCHANGEHERE</strong>" from the string.</p>

<p>It's not depended to the space char that comes after this.</p>

<p>So, I have to find "@" then every English char (a-z) must selected.</p>

<p>How can i do that ?</p>