php smarty 循环遍历数组实现代码

作者：袖梨 2022-06-25

在用循环的时候，加入二位数组中有空的数据。要怎么样才能在循环的时候过滤掉空的数据

在循环体内判断，为空就跳过本次循环不显示数据继续之后的循环

例如：

foreach ($数组 as $value){

if (empty($value))

continue;

}

PHP代码如下
/**
@ 文章分类含二级分类
@ param int $rootnum -- 一级分类数量
@ param int $childnum -- 二级分类数量
@ 返回值 array
@ date 2011.2.24
*/
function temp_articletreecate($rootnum,$childnum){
if(!isnumber($rootnum)){
$rootnum = 10;
}
if(!isnumber($childnum)){
$childnum = 10;
}
$category = array();
$parent_sql = "SELECT cateid,catename FROM ".TABLE_PREFIX."articlecate WHERE

parentid=0 AND depth=0 AND flag=1 ORDER BY orders ASC";
if(intval($rootnum)>0){
$parent_sql.=" LIMIT $rootnum";
}
$parent_cate = $GLOBALS['db']->getall($parent_sql);
foreach($parent_cate as $parent_key => $parent_value){
//子类数组名为 childcategory 根据情况自定义名称
$category[] = array('cateid'=>$parent_value['cateid'],'catename'=>$parent_value

['catename'],'childcategory'=>array());

//读取子类
$child_sql = "SELECT cateid,catename FROM ".TABLE_PREFIX."articlecate WHERE

parentid=".$parent_value['cateid']." AND flag=1 ORDER BY orders ASC";
if(intval($childnum)>0){
$child_sql.=" LIMIT $childnum";
}
$child_cate = $GLOBALS['db']->getall($child_sql);
foreach($child_cate as $child_key => $child_value){
$category[count($category)-1]['childcategory'][] = array('cateid'=>$child_value

['cateid'],'catename'=>$child_value['catename']);
}
}
return $category;
}

php教程 smarty foreach 函数**/

$tpl = new Smarty();
$tpl->template_dir   = $cfg['path']['template'];
$tpl->compile_dir    = $cfg['path']['root'] . 'www.111com.net/111cn/';

$tpl->compile_check   = $cfg['debug'];
$tpl->debugging      = false;
$tpl->caching       = 0;
$tpl->cache_lifetime = 6000;

$tpl->left_delimiter = '';

//配置smarty

$Db = new Db();
try{
   $query = $Db->query($sql);
   if( $Db->rows( $query ) )
   {
    $array = $Db->fetch( $query,0 );
    foreach( $array as $v =>$_v )
    {
     $List[$v]['id'] = $_v[0];
     $List[$v]['cntitle'] = $_v[2];
     $List[$v]['i'] = $i++;
    }

   }

}catch( Execption $e ){
   MessAge('调用参失败!');
}