PHP嵌入html代码解决思路

PHP嵌入html代码
$link = mysql_connect( '127.0.0.1', 'root', '520928' ) or die( mysql_error() );//连接数据库服务器
mysql_select_db( 'test' );//选择数据库
mysql_set_charset( 'utf8' );//设置字符编码

$sql = "SELECT * FROM wxtree";//查询分类表
$result = mysql_query( $sql );
$tree = array();//初始化一个数组
while( $row = mysql_fetch_assoc( $result ) )
{
$tree[$row['fid']][$row['id']] = $row['cat_name'];//创建分类数组
}
unset( $row );

mysql_close( $link );//关闭数据库


echo '-------------------------------------------' . "\n";

//递归函数

function for_category( $arr = array(), $arr2 )
{

echo "

";
foreach ( $arr as $k => $v )
{
if ( isset( $arr2[$k] ) && is_array( $arr2[$k] ) )
{
echo "
• $k $v" ;
  for_category( $arr2[$k], $arr2 );
  echo "
";