这是一个结果页面，它接收有关用户在上一页的表单中选中的框的一些信息。它根据用户名的选择采用该信息并更新数据库中的值。我在底部遇到问题，我的if / else if / else语句中的条件永远不会被激活，即使我认为它应该。你能帮我找一下我的逻辑错误吗？
它发生在靠近底部的行
else if($iceli && !$icleiDB){
这是不对的。如果该语句的计算结果为true，则会在数据库的表中插入一个新行。相反，如果$ iclei为真并且$ icleiDB为false（这应该使语句成立为真），我得到“iclei仍为真”的结果，这只应该在$ iclei为真且$ icleiDB为真时发生
注意：我正在使用一个名为MySqlConnection.php的PHP文件，它简化了与数据库的连接，所以无论何时你看到$ mySqlConnection-＆gt; doQuery（）或$ mySqlConnection-＆gt; doNonQuery（），这都是对数据库，括号中的任何内容都是查询。
以下是所有代码：
<?php
require_once 'MySqlConnection.php';
$server = 'localhost';
$dataBase = 'ise_programs';
$userName = 'root';
$password = 'root';
$mySqlConnection = new MySqlConnection($server,
$dataBase,
$userName,
$password);
$townName = $_POST["townName"];
//$townName = addslashes($townName); //To pevent SQL Injection, but make sure magic quotes are off
$townidQuery = "SELECT townid
FROM tbltowns
WHERE townname = '$townName'";
$townidArray = $mySqlConnection->doQuery($townidQuery);
$townid = $townidArray[0][0];
//grab values the user selected in the form
$iclei = $_POST["ICLEI"];
$ccef = $_POST["CCEF"];
$ise = $_POST["ISE"];
$ceef = $_POST["CEEF"];
$epacc = $_POST["EPACC"];
$k12ise = $_POST["K12ISE"];
$kctc = $_POST["KCTC"];
$mbbpm = $_POST["MBBPM"];
$n2n = $_POST["N2N"];
$sbpm = $_POST["SBPM"];
?>
<html>
<body>
<p>HTML works.</p>
<p>
townName = <?php echo($townName) ?>
<br />
townid = <?php echo($townid) ?>
</p>
<p>Values selected by the user: </p>
<ul>
<li>ICLEI = <?php echo($iclei) ?></li>
<li>CCEF = <?php echo($ccef) ?></li>
<li>ISE = <?php echo($ise) ?></li>
<li>CEEF = <?php echo($ceef) ?></li>
<li>EPACC = <?php echo($epacc) ?></li>
<li>K12ISE = <?php echo($k12ise) ?></li>
<li>KCTC = <?php echo($kctc) ?></li>
<li>MBBPM = <?php echo($mbbpm) ?></li>
<li>N2N = <?php echo($n2n) ?></li>
<li>SBPM = <?php echo($sbpm) ?></li>
</ul>
<p>Values from the database:</p>
<?php
$enabledProjectsListQuery = "SELECT projectid
FROM tblenabledprojects
WHERE townid = $townid";
$enabledProjectsList = $mySqlConnection->doQuery($enabledProjectsListQuery);
//convert enabled projects list into an array of single values
$enabledProjects = array();
for($i = 0; $i < count($enabledProjectsList); $i++){
$enabledProjects[] = $enabledProjectsList[$i][0];
}
//print the values in the enabledProjects array
echo('enabledProjects = ');
foreach($enabledProjects as $i){
echo($i . ", ");
}
//declare variables outside if statements
$icleiDB = false;
$ccefDB = false;
$iseDB = false;
$ceefDB = false;
$epaccDB = false;
$k12iseDB = false;
$kctcDB = false;
$mbbpmDB = false;
$n2nDB = false;
$sbpmDB = false;
//determine whether values were enabled in the database (and print them)
echo("<p>");
if(in_array(1, $enabledProjects)){
echo "in first if 108 ".$icleiDB."<br>";
echo('iclei is ENABLED. <br />');
$icleiDB = true;
}
else{
echo "in else 113 ".$icleiDB."<br>";
echo('iclei is not enabled. <br />');
$icleiDB = false;
}
if(in_array(2, $enabledProjects)){
echo('ccef is ENABLED. <br />');
$ccefDB = true;
}
else{
echo('ccef is not enabled. <br />');
$ccefDB = false;
}
if(in_array(3, $enabledProjects)){
echo('ise is ENABLED. <br />');
$iseDB = true;
}
else{
echo('ise is not enabled. <br />');
$iseDB = false;
}
if(in_array(4, $enabledProjects)){
echo('ceef is ENABLED. <br />');
$ceefDB = true;
}
else{
echo('ceef is not enabled. <br />');
$ceefDB = false;
}
if(in_array(5, $enabledProjects)){
echo('epacc is ENABLED. <br />');
$epaccDB = true;
}
else{
echo('epacc is not enabled. <br />');
$epaccDB = false;
}
if(in_array(6, $enabledProjects)){
echo('k12ise is ENABLED. <br />');
$k12iseDB = true;
}
else{
echo('k12ise is not enabled. <br />');
$k12iseDB = false;
}
if(in_array(7, $enabledProjects)){
echo('kctc is ENABLED. <br />');
$kctcDB = true;
}
else{
echo('kctc is not enabled. <br />');
$kctcDB = false;
}
if(in_array(8, $enabledProjects)){
echo('mbbpm is ENABLED. <br />');
$mbbpmDB = true;
}
else{
echo('mbbpm is not enabled. <br />');
$mbbpmDB = false;
}
if(in_array(9, $enabledProjects)){
echo('n2n is ENABLED. <br />');
$n2nDB = true;
}
else{
echo('n2n is not enabled. <br />');
$n2nDB = false;
}
if(in_array(10, $enabledProjects)){
echo('sbpm is ENABLED. <br />');
$sbpmDB = true;
}
else{
echo('sbpm is not enabled. <br />');
$sbpmDB = false;
}
echo("</p>");
if($icleiDB){
echo "determined to be true 193 ".$icleiDB."<br>";
echo('icleiDB is true.');
}
elseif(!$icleiDB){
echo "determined to be false 197 ".$icleiDB."<br>";
echo('icleiDB is false.');
}
//compare selections with DB values and decide what needs to change
if(!$iclei && $icleiDB){ //user says iclei = false, DB says true. delete from DB
$mySqlConnection->doNonQuery(
"DELETE FROM tblenabledprojects
WHERE townid = '$townid' AND projectid = '1'"
);
echo("Values deleted from database: ICLEI true -> false");
}
//echo "******iceli = ".$iceli." and icleiDB = ".$icleiDB."******<br>";
else if($iceli && !$icleiDB){ //user says iceli = true, DB says false. add to DB
$mySqlConnection->doNonQuery(
"INSERT INTO tblenabledprojects
VALUES ('$townid', '1')"
);
echo("Value added to database: ICLEI false -> true");
}
else{
if($iclei){
echo("iclei remains true");
}
elseif(!$iclei){
echo('iclei remains false');
}
else{
echo('Who knows?');
}
}
?>
</body>
</html>
答案 0 :(得分：0)
我没有看到错误，但有些事情可以帮助你解决问题：
答案 1 :(得分：0)
您设置的变量名为$iclei，但if条件中的变量名为$iceli。注意拼写差异。为了让PHP警告你这样的错误，你可能想看一下this question的答案。