php explode every third instance of character
<p>How can I explode every third semicolon (;) as a piece?</p>

<p>example data:
$string = piece1;piece2;piece3;piece4;piece5;piece6;piece7;piece8;</p>

<p>example output would be:</p>

<p>$output[0] = piece1;piece2:piece3;</p>

<p>$output[1] = piece4;piece5;piece6;</p>

<p>$output[2] = piece7;piece8;</p>

<p>Thanks!</p>
