function demo($num)
{
echo $num."<br/>";
if($num > 0 ){
demo($num -1 );
}else{
echo "--------------<br/>";
}
echo $num."<br/>";
}
demo(10);
{
echo $num."<br/>";
if($num > 0 ){
demo($num -1 );
}else{
echo "--------------<br/>";
}
echo $num."<br/>";
}
demo(10);
我之前写的 看下就明白了
http://www.blogjava.net/flysky19/articles/95785.html