title: Split string into array regex php
body: <p>I need to split the string bellow into array keys like in this format:</p>
  
  <p>string = <code>"(731) some text here with number 2 (220) some 54 number other text here"</code> convert into:</p>
  
  <pre><code>array( 
    '731' =&gt; 'some text here with number 2', 
    '220' =&gt; 'some 54 number other text here' 
  );
  </code></pre>
  
  <p>I have tried: </p>
  
  <pre><code>preg_split( '/\([0-9]{3}\)/', $string ); 
  </code></pre>
  
  <p>and got: </p>
  
  <pre><code>array ( 
    0 =&gt; 'some text here', 
    1 =&gt; 'some other text here' 
  ); 
  </code></pre>