Question

尝试将我的php表单链接到我的数据库，但是没有识别出这些值。错误消息显示：

查询无效：您的SQL语法出错;检查与MySQL服务器版本对应的手册，以便在第4行的''附近使用正确的语法。

它还表示所有值的未识别变量。

任何人都可以找到错误吗？

<?php
$dbAddress='localhost';
$dbUsername='root';
$dbPassword='xxxxxxxx';
$dbDatabasename='Studentanswers'
?>


<?php

$link = mysql_connect($dbAddress, $dbUsername, $dbPassword);

if (!$link) {
die("Could not connect");
};

print "Connected to the database server";

$db_selected = mysql_select_db($dbDatabasename, $link);
if (!$db_selected) {
die("Could not use the database");
};

print "selected a DB";

$result = mysql_query ("INSERT INTO $dbDatabasename (`faculty`, `date`, `modulecode`, `moduletitle`, `school`, `modulebookcontent`,
`moduleorganisation`, `lrcmaterials`, `moduledifficulty`, `modulesimilarity`, `contentinteresting`, `previousknowledge`,
`understoodassessmentrequirements`, `assessmentmethod`, `markedwork`, `moduleleader`, `ML_interestforsubject`, `ML_contentclear`, 
`ML_appropriateteachingpace`, `ML_reachableforadvice`, `ML_helpfulfeedback`, `lecturer1`, `L1_interestforsubject`, 
`L1_contentclear`, `L1_appropriateteachingpace`, `L1_reachableforadvice`, `L1_helpfulfeedback`, `lecturer2`, `L2_interestforsubject`, `L2_contentclear`,
`L2_appropriateteachingpace`, `L2_reachableforadvice`, `L2_helpfulfeedback`, `hoursofindependentstudy`, `overallattendance`,
`bestfeaturesofmodule`, `improvemodule`) 
VALUES (`$faculty`, `$date`, `$modulecode`, `$moduletitle`, `$school`, `$modulebookcontent`, `$moduleorganisation`, `$lrcmaterials`, `$moduledifficulty`, 
`$modulesimilarity`, `$contentinteresting`, `$previousknowledge`, `$understoodassessmentrequirements`, `$assessmentmethod`, `$markedwork', `$moduleleader`, 
`$ML_interestforsubject`, `$ML_contentclear`, `$ML_appropriateteachingpace`, `$ML_reachableforadvice`, `$ML_helpfulfeedback`, `$lecturer1`, `$L1_interestforsubject`, 
`$L1_contentclear`, `$L1_appropriateteachingpace`, `$L1_reachableforadvice`,`$L1_helpfulfeedback`, `$lecturer2`, `$L2_interestforsubject`, `$L2_contentclear`, 
`$L2_appropriateteachingpace`, `$L2_reachableforadvice`, `$L2_helpfulfeedback`, `$hoursofindependentstudy`, `$overallattendance`, `$bestfeaturesofmodule`, `$improvemodule`)");

if (!$result) {
   die('Invalid query: ' . mysql_error());
}

print "run a query against the DB";

mysql_close($link);
?>

Answer 1

一些评论：

您需要使用单引号或双引号引用您的值（无反引号）：VALUES ('$faculty', '$date' ...,
您应该切换到PDO或mysqli并准备好语句，因为mysql_*函数已被弃用，以避免潜在的SQL注入问题。
您的变量似乎未定义。如果您依赖register_globals，请不要，它是危险的并且已弃用。

Answer 2

使用变量时，应该这样做：

"INSERT INTO `".$dbDatabasename."` ..
VALUES ('".$faculty."', '".$date."', ..

如你所知，你必须分开这样的变量：“。$ variable。”

Answer 3

修正 $ markedwork

附近的输入错误

   <?php
    $dbAddress='localhost';
    $dbUsername='root';
    $dbPassword='xxxxxxxx';
    $dbDatabasename='Studentanswers'
    ?>


    <?php

    $link = mysql_connect($dbAddress, $dbUsername, $dbPassword);

    if (!$link) {
    die("Could not connect");
    };

    print "Connected to the database server";

    $db_selected = mysql_select_db($dbDatabasename, $link);
    if (!$db_selected) {
    die("Could not use the database");
    };

    print "selected a DB";

    $result = mysql_query ("INSERT INTO $dbDatabasename (`faculty`, `date`, `modulecode`, `moduletitle`, `school`, `modulebookcontent`,
    `moduleorganisation`, `lrcmaterials`, `moduledifficulty`, `modulesimilarity`, `contentinteresting`, `previousknowledge`,
    `understoodassessmentrequirements`, `assessmentmethod`, `markedwork`, `moduleleader`, `ML_interestforsubject`, `ML_contentclear`, 
    `ML_appropriateteachingpace`, `ML_reachableforadvice`, `ML_helpfulfeedback`, `lecturer1`, `L1_interestforsubject`, 
    `L1_contentclear`, `L1_appropriateteachingpace`, `L1_reachableforadvice`, `L1_helpfulfeedback`, `lecturer2`, `L2_interestforsubject`, `L2_contentclear`,
    `L2_appropriateteachingpace`, `L2_reachableforadvice`, `L2_helpfulfeedback`, `hoursofindependentstudy`, `overallattendance`,
    `bestfeaturesofmodule`, `improvemodule`) 
    VALUES (`$faculty`, `$date`, `$modulecode`, `$moduletitle`, `$school`, `$modulebookcontent`, `$moduleorganisation`, `$lrcmaterials`, `$moduledifficulty`, 
    `$modulesimilarity`, `$contentinteresting`, `$previousknowledge`, `$understoodassessmentrequirements`, `$assessmentmethod`, `$markedwork`, `$moduleleader`, 
    `$ML_interestforsubject`, `$ML_contentclear`, `$ML_appropriateteachingpace`, `$ML_reachableforadvice`, `$ML_helpfulfeedback`, `$lecturer1`, `$L1_interestforsubject`, 
    `$L1_contentclear`, `$L1_appropriateteachingpace`, `$L1_reachableforadvice`,`$L1_helpfulfeedback`, `$lecturer2`, `$L2_interestforsubject`, `$L2_contentclear`, 
    `$L2_appropriateteachingpace`, `$L2_reachableforadvice`, `$L2_helpfulfeedback`, `$hoursofindependentstudy`, `$overallattendance`, `$bestfeaturesofmodule`, `$improvemodule`)");

    if (!$result) {
       die('Invalid query: ' . mysql_error());
    }

    print "run a query against the DB";

    mysql_close($link);
    ?>

无法将php链接到数据库

3 个答案: