php 工作中的小技巧

1.循环遍历不同样式时可以加一个变量进行区分

　　<?$k=1;?>
            <? foreach ($this->jobs as $job):?>            
              <div class="col-xs-12 col-sm-4 col-lg-4 marb15
              "
              <?if($k==1):?>
              style="padding-left:0px;"
              <?$k++;?>
              <?elseif($k==2): $k++?>
              <?elseif($k==3):?>
              style="padding-right:0px;"
              <?$k=1;?>
              <?endif;?>
              >

　　　</div>

　　　<?endforeach;?>

2.数据随机调取，利用分页原理

<?
$mfpro = new manufacturer_product();
//$pros = $mfpro->fetchAll(null,'dateline desc',16,0);
$total = $mfpro->getRowCount();
$page = ceil($total/16);
//var_dump(mt_rand(1,$page));
$pros = $mfpro->limitPage(null, "dateline DESC", mt_rand(1,$page), 16);

;?>