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PHPz批改状态：合格
老师批语：
—图例
<?php/*循环for foreach while do ..while*/$cities = ['合肥','南京','苏州','上海','杭州','东莞'];/*echo current($cities);next ($cities);echo current($cities);next($cities);echo current($cities);*/while ( $city=current($cities)):echo current($cities).'<br>';//前移针针next($cities);endwhile;//var_dump(current($cities));reset($cities);var_dump($cities);var_dump(count($cities));//do .. while出口循环$i=0;do{echo $cities[$i];$i++;}while($i<count($cities));echo '<hr>';//for计算循环 for(初始条件;循环条件;更新条件){满足循环条件所执行的代码块}for ($i=0;$i<count($cities);$i++){//break提前结束循环if($i == 2 ) continue;echo $cities[$i],'<br>';}ob_clean();/** foreach 用于遍历数组* foreach($array as $value){* 处理数组成员 $value}*/$cities = ['合肥','南京','苏州','上海','杭州','东莞'];foreach($cities as $vlues ) {echo "<h1 style='color:pink'><center>$vlues</center></h1>";};$info=[['create_time'=>1321657471,'name'=>'peter'],['create_time'=>1321341451,'name'=>'chloe'],['create_time'=>1322312471,'name'=>'mile']];foreach($info as $k =>$v){$info[$k]['create_time']=date("Y-m-d H:m:s",$v['create_time']);}echo '<pre>';print_r($info);$info1=[['贵州'=>'贵阳'],['贵州'=>'遵义'],['贵州'=>'安顺']];foreach($info as $k=>$value){;}print_r($info1);//作业1 $arr = [23,3,45,6,78,8,34],$arr = [23,3,45,6,78,8,34];for($i=0;$i<count($arr);$i++){if(($arr[$i])%2==0){$a= "$arr[$i]".',';}}
—- 计算机器
— 图例
—- 代码区
<!doctype html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport"content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Document</title></head><body><form method="post"><input type="text" name="first" /><select name="s" id=""><option value="+">+</option><option value="-">-</option><option value="*">*</option><option value="%">%</option><option value="/">/</option></select><input type="text" name="second"><input type="submit" value="结果"></form></body></html><?php//判断是否PHP的得到值$first=$_POST["first"]; //获得name为first的值$v=$_POST["s"]; //获取name为s的值$second=$_POST["second"]; //获取name为second的值if($v=="+"){echo $first."+".$second."结果为".($first+$second);}elseif($v== "-"){echo $first."-".$second."结果为".($first-$second);}elseif($v== "*"){echo $first."*".$second."结果为".($first-$second);}elseif($v=="/"){if($second ==0){echo "除数不能为0";}else{echo $first."/".$second."结果为".($first/$second);}}elseif($v == "%"){if($second ==0){echo "除数不能为0";}else{echo $first."%".$second."结果为".($first%$second);}}
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