Placing a space before and after a char that is not in a-to-z and 0-9
<p>This is for analyzing a string... in need to explode a string to get all chars. Basically:</p>

<pre><code>$string = "This is (1990-2002) some, text [after] this.";
</code></pre>

<p>What do i need to do to get this:</p>

<pre><code>$string = "This is ( 1990 - 2002 ) some , text [ after ] this .";
</code></pre>

<p>This can be something like:</p>

<pre><code>$string = str_replace('','',$string);
</code></pre>

<p>Note: It is not a problem if double spaces get inserted ill remove it...</p>
