PHP foreach()跳出本次或当前循环与终止循环方法
2019-07-23 08:40:54来源:博客园 阅读 ()
PHPforeach()跳出本次或当前循环与终止循环方法
PHP中用foreach()循环中,想要在循环的时候,当满足某个条件时,想
$arr = array('a','b','c','d','e'); $html = ''; foreach($arr as $key => $value){ if($value=='b'){ $html .= $value; continue; // 当 $value为b时,跳出本次循环 } if($value=='c'){ $html .= $value; break; // 当 $value为c时,终止循环 } $html .= $value; } echo $html; // 输出: ab
下面是自己的实际例子
//父级栏目 public function parentList($id) { //查询该栏目下所有子类数据 $categoryData = db("category")->where("id=".$id)->find(); //dump($categoryData); if(!$categoryData){ $this->error("参数错误"); }else{ $this->assign('categoryData',$categoryData); //查询该栏目下所有子类数据即 pid=$id $category = db("category")->select(); $praProductData = $this->toLayer($category); //dump($praProductData); foreach($praProductData as $k=>$v) { //如果有子类目 if (!empty($v['zilei']) && $v['id']==$id) { $praductData = Db::table("ven_article") ->alias('a') ->join('ven_category w','a.cid=w.id') ->where("a.status=1 and w.pid='".$id."'") ->field("a.id,a.title,a.faceimg,a.time_report,a.resume,a.cid,w.name") ->order('a.id DESC') ->paginate(6); //dump($praductData); break; }else{ //没有子类 if ($v['id'] == $id) { $praductData = Db::table("ven_article") ->alias('a') ->join('ven_category w','a.cid=w.id') ->where("a.status=1 and a.cid=".$id) ->field("a.id,a.title,a.faceimg,a.time_report,a.resume,a.cid,w.name") ->order('a.id DESC') ->paginate(6); //dump($praductData); break; } } } $data = $praductData->toArray()['data'];//或者$data = $praductDatas->all(); if($data){ $this->assign('a',1); } $page = $praductData->render(); $this->assign('Page',$page); $this->assign("newPraProduct",$praductData); } return view("ParentList"); }
打印$praProductData结果如下:
array(5) { [0] => array(9) { ["id"] => int(1) ["pid"] => int(0) ["path"] => string(3) "0-1" ["name"] => string(9) "风幕柜" ["status"] => int(1) ["seo_title"] => string(0) "" ["seo_keys"] => string(0) "" ["seo_desc"] => string(0) "" ["zilei"] => array(2) { [0] => array(9) { ["id"] => int(2) ["pid"] => int(1) ["path"] => string(5) "0-1-2" ["name"] => string(21) "饮料超市风幕柜" ["status"] => int(1) ["seo_title"] => string(0) "" ["seo_keys"] => string(21) "饮料超市风幕柜" ["seo_desc"] => string(21) "饮料超市风幕柜" ["zilei"] => array(0) { } } [1] => array(9) { ["id"] => int(37) ["pid"] => int(1) ["path"] => string(6) "0-1-37" ["name"] => string(15) "超市风幕柜" ["status"] => int(1) ["seo_title"] => string(0) "" ["seo_keys"] => string(15) "超市风幕柜" ["seo_desc"] => string(15) "超市风幕柜" ["zilei"] => array(0) { } } } } [1] => array(9) { ["id"] => int(33) ["pid"] => int(0) ["path"] => string(4) "0-33" ["name"] => string(15) "环岛风幕柜" ["status"] => int(1) ["seo_title"] => string(15) "环岛风幕柜" ["seo_keys"] => string(15) "环岛风幕柜" ["seo_desc"] => string(15) "环岛风幕柜" ["zilei"] => array(0) { } } [2] => array(9) { ["id"] => int(46) ["pid"] => int(0) ["path"] => string(4) "0-46" ["name"] => string(9) "点菜柜" ["status"] => int(1) ["seo_title"] => string(9) "点菜柜" ["seo_keys"] => string(9) "点菜柜" ["seo_desc"] => string(9) "点菜柜" ["zilei"] => array(0) { } } [3] => array(9) { ["id"] => int(48) ["pid"] => int(0) ["path"] => string(4) "0-48" ["name"] => string(9) "鲜花柜" ["status"] => int(1) ["seo_title"] => string(9) "鲜花柜" ["seo_keys"] => string(9) "鲜花柜" ["seo_desc"] => string(9) "鲜花柜" ["zilei"] => array(0) { } } [4] => array(9) { ["id"] => int(53) ["pid"] => int(0) ["path"] => string(4) "0-53" ["name"] => string(9) "药品柜" ["status"] => int(1) ["seo_title"] => string(0) "" ["seo_keys"] => string(0) "" ["seo_desc"] => string(0) "" ["zilei"] => array(2) { [0] => array(9) { ["id"] => int(54) ["pid"] => int(53) ["path"] => string(7) "0-53-54" ["name"] => string(15) "药品阴凉柜" ["status"] => int(1) ["seo_title"] => string(0) "" ["seo_keys"] => string(0) "" ["seo_desc"] => string(0) "" ["zilei"] => array(0) { } } [1] => array(9) { ["id"] => int(55) ["pid"] => int(53) ["path"] => string(7) "0-53-55" ["name"] => string(15) "药品冷藏柜" ["status"] => int(1) ["seo_title"] => string(0) "" ["seo_keys"] => string(0) "" ["seo_desc"] => string(0) "" ["zilei"] => array(0) { } } } } }
要跳出本次循环继续执行下次循环,或者满足某个条件的时候,终止foreach()循环,分别会用到:continue 与 break。
原文链接:https://www.cnblogs.com/zmdComeOn/p/11126011.html
如有疑问请与原作者联系
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