使用PHP编写程序问题

Question

Answer 1

帮你写好了，记得点击此回答右上角采纳按钮，谢谢
1

for($i=100;$i>=1;$i--){
  if($i%2==1){echo $i." ";}
}
?>

2

function fun($a,$b,$c){
  if($a<$b)$a=$b;
  if($a<$c)$a=$c;
  return $a;
}
echo fun(11,21,9);
?>

3

<?php
$arr=array(3,1,5,7,3);
foreach($arr as $v)echo $v."<BR>";
?>

5

<meta charset="utf-8"/>
<table border="1"><tr><td>编号</td><td>商品名称</td><td>价格</td></tr>
<?php
$conn=mysqli_connect("localhost","root","Admin_123","test"); 
$sql="select * from goods";
$result=$conn->query($sql);
while($row=$result->fetch_assoc()){
echo "<tr><td>".$row["id"]."</td><td>".$row["name"]."</td><td>".$row["price"]."</td></tr>";
}
?>
</table>