Question

我是编码方面的初学者，我一直在从事此类项目，在该项目中我想使用PHP将数据插入SQL服务器，所以我一直在努力的是要插入的部分数据，并且我想将选择标签对象放入变量中，所以我一直在获取未定义索引，因此，如果您能帮助我，将不胜感激。

HTML代码：

<form action="" method="POST">
    <input type="text" class="puo" id="modeloPU" name="Nmod" style="width: 
9.6%">
    <select class="puo" id="familiaSPU" name="Nfam">
        <option value="-1   "></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>
        <option value="1">ENFRIADORES</option>
        <option value="2">FROSTER</option>              
        <option value="3">CONGELADORES</option>             
        <option value="4">MIRAGE</option></select>
    <select class="puo puh" id="odpSPU" name="Nodp">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>
        <option value="1">HORIZONTAL</option>
        <option value="2">VERTICAL</option></select>
    <select class="puo puh" id="tdcSPU" name="Ntdc">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>
        <option value="1">CLIENTE PARTICULAR</option>
        <option value="2">VALIDADOS</option>
        <option value="3">DEFINIDOS</option>
        <option value="4">ESTÁNDAR</option></select>
    <select class="puo puh" id="clienteSPU" name="Ncliente">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>                            
        <option value="1">CBC</option>
        <option value="2">COCA-COLA</option>
        <option value="3">FASA</option>
        <option value="4">FLORIDA</option>
        <option value="5">HOSHISAKI</option>
        <option value="6">JALEEL</option></select>
    <select class="puo puh" id="voltajeSPU" name="Nvoltaje">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>                
        <option value="1">110V(50Hz - 60Hz)</option>
        <option value="2">140V(50Hz - 60Hz)</option>
        <option value="3">220V(50Hz - 60Hz)</option></select>
    <select class="puo puh" id="gradoSPU" name="Ngrado">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>                
        <option value="1">C°</option>
        <option value="2">F°</option></select>
    <select class="puo puh" id="termostatoSPU" name="Ntermostato">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>
        <option value="1">CAREL</option>
        <option value="2">COEL</option>
        <option value="3">ELSTAT</option>
        <option value="4">FULL GAUGE</option>
        <option value="5">SOLLATEK</option>
        <option value="6">WELLINGTON</option></select>
    <select class="puo puh" id="tdpSPU" name="Ntdp">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>                
        <option value="1">PVP</option>
        <option value="2">PVPH</option>
        <option value="3">PS</option></select>
    <select class="puo puh" id="paisSPU" name="Npais">
        <option value="-1"></option>
        <option value="0" style="font-style: italic; color:grey">indefinido</option>                
        <option value="1">USA</option>
        <option value="2">Puerto Rico</option>
        <option value="3">Latino America</option></select>          
    <input type="submit" class="Boton" name="submit" id="AddButton" 
value="Agregar" style="box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 
50px 0 rgba(0,0,0,0.19); cursor: pointer;">
</form>

PHP代码：

<?php   
include 'conn.php';
$myDate         = date('Y/m/d');    
$model          = $_POST['Nmod'];
$fam            = $_POST['Nfam'];
$orientacion    = $_POST['Nodp'];
$tdcliente      = $_POST['Ntdc'];
$cli            = $_POST['Ncliente'];
$volt           = $_POST['Nvoltaje'];
$grad           = $_POST['Ngrado'];
$termo          = $_POST['Ntermostato'];
$tdpuerta       = $_POST['Ntdp'];
$pai            = $_POST['Npais'];

$SQL = "INSERT INTO usuario (modelo ,familia ,odp ,tdc ,cliente ,voltaje ,
                            grado ,termostato, tdp, pais, fecha) 
                VALUES ('$model', '$fam', 
                        '$orientacion', '$tdcliente', '$cli', '$volt', 
                        '$grad', '$termo', '$tdpuerta', '$pai','$myDate')";
if ($conn->query($SQL) == TRUE) {
    echo "New record created successfully";
} 
else {
    echo "Error: " . $SQL . "<br>" . $conn->error;
}
$conn->close();                                 
?>

Answer 1

您会收到 未定义的索引错误 ，因为尚未创建第一次加载表单$_POST，因为尚未提交表单，但您仍然运行引用$_POST的代码。在尝试使用$_POST

之前，您必须检查该表单是否已实际提交。

有很多方法可以做到这一点，

<?php   
include 'conn.php';

// has the form been submitted
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $myDate         = date('Y/m/d');    
    $model          = $_POST['Nmod'];
    $fam            = $_POST['Nfam'];
    $orientacion    = $_POST['Nodp'];
    $tdcliente      = $_POST['Ntdc'];
    $cli            = $_POST['Ncliente'];
    $volt           = $_POST['Nvoltaje'];
    $grad           = $_POST['Ngrado'];
    $termo          = $_POST['Ntermostato'];
    $tdpuerta       = $_POST['Ntdp'];
    $pai            = $_POST['Npais'];

    $SQL = "INSERT INTO usuario (modelo ,familia ,odp ,tdc ,cliente ,voltaje ,
                                grado ,termostato, tdp, pais, fecha) 
                    VALUES ('$model', '$fam', 
                            '$orientacion', '$tdcliente', '$cli', '$volt', 
                            '$grad', '$termo', '$tdpuerta', '$pai','$myDate')";
    if ($conn->query($SQL) == TRUE) {
        echo "New record created successfully";
    } 
    else {
        echo "Error: " . $SQL . "<br>" . $conn->error;
    }
    $conn->close();                                 
}
?>

我还必须提到，您的脚本可以向SQL Injection Attack开放甚至if you are escaping inputs, its not safe! 在MYSQLI_或PDO API中使用prepared parameterized statements

如何使用PHP使选择标签将数据上传到SQL

1 个答案: