我在尝试同时使用下拉菜单插入和删除时遇到问题
<div id="blabla">
<div style="position: relative;">
<p style="position: absolute; top: 185px; left: 58px;">
<select name="lista">
<option selected="selected"></option>
<optgroup label="Selecciona">
<option> Option 1</option>
<option> Option 2</option>
<option> Option 3</option>
<option> Option 4</option>
<option> Option 5</option>
</optgroup>
</select>
这是 ADD.php 代码
<html>
<head>
</head>
<body>
<?php
if(isset($_POST['justifica']) && !empty($_POST['justifica']) &&
isset($_POST['si']) && !empty($_POST['si']) &&
isset($_POST['lista']) && !empty($_POST['lista']))
{
mysql_connect("123", "123", "p123") or die(mysql_error()) ;
mysql_select_db("123") or die(mysql_error()) ;
mysql_query("INSERT INTO dos (lista,justifica,si) VALUES ('$_POST[lista]','$_POST[justifica]','$_POST[si]')");
mysql_query("DELETE FROM dos2 WHERE lista5='$_POST[lista]')");
if ($_POST['value'] === '') {
$_POST['value'] = null; // null en mayuscula si es SQL
}
echo "<img src=imagenes/Satisf.jpg>";
}else{
echo "<img src=imagenes/Error.jpg>";
}
?>
</body>
</html>
我想INSERT到表名“dos”中，同时在按下“提交”按钮时从表名“dos2”中DELETE
在表单“Option1”上，将在表“dos”上插入“Option1”，同时从表“dos2”中删除“Option1”。
最佳答案
我会使用 MySQLi 来完成此操作，并且我更喜欢 OOP...
<?php
class MyDBHandle
{
public $objDB;
//Creates the DB Object
public function Init($strHost, $strUsername, $strPassword, $strDB)
{
$this->objDB = new mysqli($strHost, $strUsername, $strPassword, $strDB);
}
//SQL Query 1
public function Dos($strLista, $strJustifica, $strSi)
{
$objStatement = $this->objDB->prepare("INSERT INTO dos ('lista', 'justifica', 'si') VALUES (?, ?, ?)");
$objStatement->bind_param("sss",
$strLista,
$strJustifica,
$strSi);
$objStatement->execute();
$objStatement->free_result();
}
//SQL Query 2
public function Dos2($strLista)
{
$objStatement = $this->objDB->prepare("DELETE FROM dos2 WHERE lista2=?");
$objStatement->bind_param("s",
$strLista);
$objStatement->execute();
$objStatement->free_result();
}
//disconnect from the db
public function Disconnect()
{
$this->objDB->Close();
}
}
//db variables
$dbHost = "xxx";
$dbUser = "xxx";
$dbPass = "xxx";
$dbDB = "xxx";
//initialize and connect to the DB
$objDB = new MyDBHandle();
$objDB->Init($dbHost, $dbUser, $dbPass, $dbDB);
//here is a moded version of your code to execute the new methods
if(isset($_POST['justifica']) && !empty($_POST['justifica']) &&
isset($_POST['si']) && !empty($_POST['si']) &&
isset($_POST['lista']) && !empty($_POST['lista']))
{
$objDB->Dos($_POST['lista'], $_POST['justifica'], $_POST['si']);
$objDB->Dos2($_POST['lista']);
}
$objDB->Disconnect();
?>
关于php - 如何在 PHP 和 MySQL 上使用下拉菜单同时删除和插入，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23352915/