价格格式化有关问题

<br />header("Content-type: text/html; charset=utf-8");<br />function removeAfterZero($str) {<br />    $s = $str;<br />    $r = '';<br />    for ($i = strlen($s)-1; $i > 0; $i--) {<br />        if ($s[$i] == 0)  {<br />            $s = substr($s, 0, $i);<br />            $r = $s;<br />        } else {<br />            break;<br />        }<br />    }<br />    return $r;<br />}<br /><br />$num = 1000100;<br />if (strlen(strlen($num) < 5))<br />    echo $num;<br />else if (strlen($num) >= 5 && strlen($num) < 6) {    <br />    if (removeAfterZero(substr($num, 1, strlen($num)-1)) == 0)<br />        echo  substr($num, 0, 1) . "万";<br />    else     <br />        echo  substr($num, 0, 1) . '.' .  removeAfterZero(substr($num, 1, strlen($num)-1)) . "万";<br />}else if (strlen($num) >= 6 && strlen($num) < 7) {<br />     if (removeAfterZero(substr($num, 2, strlen($num)-2)) == 0)<br />        echo  substr($num, 0, 2) . "万";<br />    else     <br />        echo  substr($num, 0, 2) . '.' .  removeAfterZero(substr($num, 2, strlen($num)-2)) . "万";<br />}else if (strlen($num) >= 7 && strlen($num) < 8) {<br />    if (removeAfterZero(substr($num, 3, strlen($num)-3)) == 0)<br />        echo  substr($num, 0, 3) . "万";<br />    else     <br />        echo  substr($num, 0, 3) . '.' .  removeAfterZero(substr($num, 3, strlen($num)-3)) . "万";<br />}<br />

$num = 100000;<br />echo $num < 10000 ? $num : $num/10000 . '万';