我正在使用工厂(类)来呈现来自目标数据库表的表单 - 正如在类实例中定义的那样。然后在提交时,创建该类的新实例,然后将新记录插入数据库。$_POST 键名与表列名匹配。
我的问题是在类实例中确定变量时动态分配绑定参数。无论我使用反射方法还是内联,我都会得到以下信息。
Warning: mysqli_stmt::bind_param() [mysqli-stmt.bind-param]: Number of elements in type definition string doesn't match number of bind variables
在构建后数组并分配给类属性 $array 后,在子类中调用以下方法。
private function addrecord($array,$tbl,$_conn){
//define field name array for query statement
foreach ($array as $key=>$value){
$keyarr[]=$key;
}
//BUILD THE QUERY STATEMENT
$query = "INSERT INTO $tbl SET ";
foreach ($keyarr as $key){
$query .= ($key."=?, "); //clone and add next element
}
$query = rtrim($query,", "); //remove EOL whitespace and comma
//done
/*
//Hard code bind parameters works as expected
if (self::$_conn = new mysqli(DB_HOST,DB_UNAME,DB_UPWORD,DB_NAME)){
$stmt=self::$_conn->prepare($query);
$stmt->bind_param("sssss",$array['user_id'],$array['user_name'],$array['user_email'],$array['user_date'],$array['user_active']);
$stmt->execute();
$insertid=$stmt->insert_id;
$stmt->close();
echo "The record was created with id ".$insertid;
}
*/
//Tried re assigning post array as reference
//same error as just passing $array
//$array = $this->refValues($array);
//Binding params using Reflections, same error
self::$_conn = new mysqli(DB_HOST,DB_UNAME,DB_UPWORD,DB_NAME);
$stmt = self::$_conn->prepare($query);
$ref = new ReflectionClass('mysqli_stmt');
$method = $ref->getMethod("bind_param");
$method->invokeArgs($stmt,$array);
$stmt->execute();
$stmt->close();
self::$_conn->close();
}
//Pass By Reference required for PHP 5.3+, dev server 5.3.17
function refValues($arr){
if (strnatcmp(phpversion(),'5.3') >= 0){
$refar = array();
foreach($arr as $key => $value)
$refar[$key] = &$arr[$key];
return $refar;
}
return $arr;
}
在此先感谢并非常感谢。