PHP查询代码禁用其他查询

时间:2013-12-21 15:54:53

标签: php html forms mysqli

我有两个查询,一个用于填充我的表,另一个用于控制每行的删除按钮。当我在代码中有删除按钮查询时,它会禁用该表并使其为空。关于为什么会发生这种情况的任何想法?

以下是代码:

// Queries

$delquery = "DELETE FROM mods WHERE id = '$id'";
$delete = $conn->query($delquery) or die(mysqli_error($conn));

// Run queries and actions

if (isset($_POST['delete'])) {
   echo $delete;
}

// Table population

$query = "SELECT * FROM mods";
$result = $conn->query($query) or die(mysqli_error($conn));

2 个答案:

答案 0 :(得分:5)

因为无论条件如何都清空表格。

如果语句,请将前两行代码放在中。

答案 1 :(得分:2)

您的if (isset($_POST['delete'])) {条件应该包含整个删除查询逻辑 - 尤其是MySQL查询 - 而不仅仅是echo语句。否则,无论何时加载该代码,您都将始终删除该表。试试这个:

if (isset($_POST['delete'])) {
  // Queries
  $delquery = "DELETE FROM mods WHERE id = '$id'";
  $delete = $conn->query($delquery) or die(mysqli_error($conn));

  // Run queries and actions
  echo $delete;
}

// Table population
$query = "SELECT * FROM mods";
$result = $conn->query($query) or die(mysqli_error($conn));

我还建议重新处理if逻辑,这样除了$_POST['delete']之外array_key_exists没有设置isset时,它不会在运行时抛出索引未设置错误{1}}:

if (array_key_exists('delete', $_POST) && isset($_POST['delete'])) {
  // Queries
  $delquery = "DELETE FROM mods WHERE id = '$id'";
  $delete = $conn->query($delquery) or die(mysqli_error($conn));

  // Run queries and actions
  echo $delete;
}

// Table population
$query = "SELECT * FROM mods";
$result = $conn->query($query) or die(mysqli_error($conn));