PHP develops si...LOGIN

PHP develops simple voting system administrator function module (2)

In this section we introduce the administrator to modify voting items and delete voting items.

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Query the database through the SQL statement SELECT and loop out all voting items

<?php
$SQL="SELECT * FROM vote order by count desc";
$rs=mysqli_query($link,$sql);
while($rows=mysqli_fetch_assoc($rs))
{
?>
  <tr>
    <td align="center" bgcolor="#FFFFFF"><input type="checkbox" name="itm" value="<?php echo $rows["id"]?>" /><?php echo $rows["id"]?></td>
    <td align="center" bgcolor="#FFFFFF"><?php echo $rows["item"]?></td>
    <td align="center" bgcolor="#FFFFFF"><?php echo $rows["count"]?></td>
    <td align="center" bgcolor="#FFFFFF"><input type="button" value="修改" onclick="location.href='?type=modify&id=<?php echo $rows["id"]?>'" /></td>
    <td align="center" bgcolor="#FFFFFF"><input type="button" value="删除" onclick="location.href='?type=del&id=<?php echo $rows["id"]?>'"  /></td>
  </tr>
<?php  
}
?>

Use <input type="checkbox"/> to select the required The one that was modified and deleted.

<input type="checkbox" name="itm" value="<?php echo $rows["id"]?>" />

The modification and deletion here are given to the id, and the current content is modified through the obtained id, and the data in the database is modified.

<?php
$type = isset($_GET["type"])?$_GET["type"]:"";
if($type =="modify"){

$id=$_GET["id"];

  $item=$_POST["itm"];
  $count=$_POST["count"];
  $SQL="UPDATE vote SET item='$item',count=$count WHERE id=$id";
  mysqli_query($link,$sql);
  echo "<script language=javascript>alert('修改成功!');window.location='admin.php'</script>";
}
?>

Delete the current project and delete the data in the database by obtaining the id value.

<?php
$type = isset($_GET["type"])?$_GET["type"]:"";
if($type =="del"){
  $id=$_GET["id"];
  $SQL="DELECT FROM vote WHERE id in ($id)";
  mysqli_query($link,$sql);
  echo "<script language=javascript>alert('删除成功!');window.location='admin.php'</script>";
}
?>


Next Section
<?php $sql="select * from vote order by count desc"; $rs=mysqli_query($link,$sql); while($rows=mysqli_fetch_assoc($rs)) { ?> <tr> <td align="center" bgcolor="#FFFFFF"><input type="checkbox" name="itm" value="<?php echo $rows["id"]?>" /><?php echo $rows["id"]?></td> <td align="center" bgcolor="#FFFFFF"><?php echo $rows["item"]?></td> <td align="center" bgcolor="#FFFFFF"><?php echo $rows["count"]?></td> <td align="center" bgcolor="#FFFFFF"><input type="button" value="修改" onclick="location.href='?type=modify&id=<?php echo $rows["id"]?>'" /></td> <td align="center" bgcolor="#FFFFFF"><input type="button" value="删除" onclick="location.href='?type=del&id=<?php echo $rows["id"]?>'" /></td> </tr> <?php } ?>
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