以下脚本引发此错误：
SQLSTATE[HY093]：无效的参数编号：未定义参数
错误来自以下行：
$query .= "WHERE username1=:un1";
$binValues["un1"] = $_POST['username1'];
php语法有问题吗？
我的完整脚本：
<?php
require_once "config.inc.php";
$query = "UPDATE customer SET ";
$binValues = [];
if(!empty($_POST['eidosmetaf1'])) {
$query .= "eidosmetaf1 = :e1";
$binValues["e1"] = $_POST['eidosmetaf1'];
}
if(!empty($_POST['weight1'])) {
$query .= ",weight1 = :w1";
$binValues["w1"] = $_POST['weight1'];
}
if(!empty($_POST['startNomos1'])){
$query .= ",startNomos1 = :sn1";
$binValues["sn1"] = $_POST['startNomos1'];
}
if(!empty($_POST['startPoli1'])) {
$query .= ",startPoli1 = :sc1";
$binValues["sc1"] = $_POST['startPoli1'];
}
if(!empty($_POST['start_lat'])) {
$query .= ",start_lat = :slat1";
$binValues["slat1"] = $_POST['start_lat'];
}
if(!empty($_POST['start_lng'])) {
$query .= ",start_lng = :slng1";
$binValues["slng1"] = $_POST['start_lng'];
}
if(!empty($_POST['finalNomos1'])) {
$query .= ",finalNomos1 = :fn1";
$binValues["fn1"] = $_POST['finalNomos1'];
}
if(!empty($_POST['finalPoli1'])) {
$query .= ",finalPoli1 = :fc1";
$binValues["fc1"] = $_POST['finalPoli1'];
}
if(!empty($_POST['final_lat'])) {
$query .= ",final_lat = :flat1";
$binValues["flat1"] = $_POST['final_lat'];
}
if(!empty($_POST['final_lng'])) {
$query .= ",final_lng = :flng1";
$binValues["flng1"] = $_POST['final_lng'];
}
if(!empty($_POST['depDate1'])) {
$query .= ",depDate1 = :dD1";
$binValues["dD1"] = $_POST['depDate1'];
}
if(!empty($_POST['depTime1'])) {
$query .= ",depTime1 = :dT1";
$binValues["dT1"] = $_POST['depTime1'];
}
if(!empty($_POST['specialservices1'])) {
$query .= ",specialservices1 = :ex1";
$binValues["ex1"] = $_POST['specialservices1'];
}
if(!empty($_POST['comments1'])) {
$query .= ",comments1 = :c1";
$binValues["c1"] = $_POST['comments1'];
}
//error here
$query .= "WHERE username1=:un1";
$binValues["un1"] = $_POST['username1'];
$query .= "and comments1=:c1_old";
$binValues["c1_old"] = $_POST['comments2_old'];
try {
$stmt = $db->prepare($query);
$stmt->execute($binValues);
} catch (PDOException $ex) {
$response["success"] = 0;
$response["message"] = "Database Error2. Please Try Again!";
echo $ex->getMessage();
die(json_encode($response));
}
$response["success"] = 1;
$response["message"] = "..............!";
echo json_encode($response);
?>
由于我已经修复了您以前的代码，我建议您使用我的答案中的代码：https://stackoverflow.com/a/29354781/3933332因为阅读和理解起来要简单得多。
如果你使用我的代码，你可以像这样添加WHERE子句：
<?php
//...
foreach($checkedValues as $k => $v) {
$query .= "$v = :$k,";
$bindValues[$k] = $_POST[$v];
}
$query = rtrim($query, ",");
//fixed code here
if(isset($_POST['username1'])) {
$query .= " WHERE username1=:un1";
$bindValues["un1"] = $_POST["username1"];
}
if(isset($_POST['comments1'])) {
$query .= " AND comments1=:c1_old";
$bindValues["c1_old"] = $_POST["comments1"];
}
try {
$stmt = $db->prepare($query);
$stmt->execute($binValues);
} catch (PDOException $ex) {
$response["success"] = 0;
$response["message"] = "Database Error2. Please Try Again!";
echo $ex->getMessage();
die(json_encode($response));
}
//...
?>
$binValues[":un1"] = $_POST['username1']