Php 分析错误：语法错误，意外'；进入'；（T_字符串）在第7行

我在运行这段代码时遇到了这个错误，我用它向数据库添加了一个特定的过滤器

       <?php

//Connect to Databaseeee
    $con=mysqli_connect("127.0.0.1","root","Toom13371!","filter_database_test");
    if (mysqli_connect_errno($con))
        {
        echo "Failed to connect to MySQL: " . mysqli_connect_error();
        }

        // sql insertationerino
        $sql = INSERT INTO filterlist ('type_code', 'connector_type', 'construction_type', 'author', 'estimate_lead_time', 'last_update', 'confidence_level', 'passtype', 'start_passband', 'stop_passband', 'low_stopband', 'high_stopband', 'low_passband', 'high_passband', 'start_stopband', 'stop_stopband') VALUES ('".$_POST['type_code']."', '".$_POST['connector_type']."', '".$_POST['construction_type']."', '".$_POST['author']."', '".$_POST['estimate_lead_time']."', '".$_POST['last_update']."', '".$_POST['confidence_level']."', '".$_POST['passtype']."', '".$_POST['start_passband']."', '".$_POST['stop_passband`']."', '".$_POST['low_stopband']."', '".$_POST['high_stopband']."', '".$_POST['low_passband']."', '".$_POST['high_passband']."', '".$_POST['start_stopband']."', '".$_POST['start_stopband']."');
            if (!mysqli_query($con,$sql))
            {
            die('Error: ' . mysqli_error($con));
            }
        echo "1 Filter Added";
        mysqli_close($con);
        ?>

---

将$sql语句替换为：

$sql = "INSERT INTO filterlist ('type_code', 'connector_type', 'construction_type', 'author', 'estimate_lead_time', 'last_update', 'confidence_level', 'passtype', 'start_passband', 'stop_passband', 'low_stopband', 'high_stopband', 'low_passband', 'high_passband', 'start_stopband', 'stop_stopband') VALUES ('".$_POST['type_code']."', '".$_POST['connector_type']."', '".$_POST['construction_type']."', '".$_POST['author']."', '".$_POST['estimate_lead_time']."', '".$_POST['last_update']."', '".$_POST['confidence_level']."', '".$_POST['passtype']."', '".$_POST['start_passband']."', '".$_POST['stop_passband`']."', '".$_POST['low_stopband']."', '".$_POST['high_stopband']."', '".$_POST['low_passband']."', '".$_POST['high_passband']."', '".$_POST['start_stopband']."', '".$_POST['start_stopband']."')";

在您的
$sql=INSERT-INTO
语句中，如果您查看结尾，您有
“”；
，这应该是
“”；
。
此外，sql查询必须是字符串，不能将其作为函数调用。因此，将整个查询放在字符串中。因此，它应该是：

$sql = "INSERT INTO filterlist ('type_code', 'connector_type', 'construction_type', 'author', 'estimate_lead_time', 'last_update', 'confidence_level', 'passtype', 'start_passband', 'stop_passband', 'low_stopband', 'high_stopband', 'low_passband', 'high_passband', 'start_stopband', 'stop_stopband') VALUES ('".$_POST['type_code']."', '".$_POST['connector_type']."', '".$_POST['construction_type']."', '".$_POST['author']."', '".$_POST['estimate_lead_time']."', '".$_POST['last_update']."', '".$_POST['confidence_level']."', '".$_POST['passtype']."', '".$_POST['start_passband']."', '".$_POST['stop_passband`']."', '".$_POST['low_stopband']."', '".$_POST['high_stopband']."', '".$_POST['low_passband']."', '".$_POST['high_passband']."', '".$_POST['start_stopband']."', '".$_POST['start_stopband']."');";

首先，您需要学习php的基本知识


任何字符串都应该在引号内
您需要先转义这些值，然后再使用

试着这样做：

$sql = "INSERT INTO filterlist (`type_code`, `connector_type`, `construction_type`, 
`author`, `estimate_lead_time`, `last_update`, `confidence_level`, `passtype`, 
 `start_passband`, `stop_passband`, `low_stopband`, `high_stopband`, `low_passband`, 
 `high_passband`, `start_stopband`, `stop_stopband`) VALUES 
 ('".mysqli_real_escape_string($con,$_POST['type_code'])."', 
 '".mysqli_real_escape_string($con,$_POST['connector_type'])."', 
 '".mysqli_real_escape_string($con,$_POST['construction_type'])."', 
 '".mysqli_real_escape_string($con,$_POST['author'])."',  
 '".mysqli_real_escape_string($con,$_POST['estimate_lead_time'])."', 
 '".mysqli_real_escape_string($con,$_POST['last_update'])."', 
 '".mysqli_real_escape_string($con,$_POST['confidence_level'])."', 
 '".mysqli_real_escape_string($con,$_POST['passtype'])."', 
 '".mysqli_real_escape_string($con,$_POST['start_passband'])."', 
 '".mysqli_real_escape_string($con,$_POST['stop_passband`'])."', 
 '".mysqli_real_escape_string($con,$_POST['low_stopband'])."', 
 '".mysqli_real_escape_string($con,$_POST['high_stopband'])."', 
 '".mysqli_real_escape_string($con,$_POST['low_passband'])."', 
 '".mysqli_real_escape_string($con,$_POST['high_passband'])."', 
 '".mysqli_real_escape_string($con,$_POST['start_stopband'])."', 
 '".mysqli_real_escape_string($con,$_POST['start_stopband'])."')";


if (!mysqli_query($con,$sql)){
            die('Error: ' . mysqli_error($con));
   }
  echo "1 Filter Added";
  mysqli_close($con);

就PHP而言，SQL查询应该是一个字符串，因此引用为字符串