I'm writing some PHP to accept an array of numbers and names in POST and insert them into a MySQL table (named Contacts_table) Here's the version that works fine without any error:
我正在编写一些PHP来接受POST中的数字和名称数组,并将它们插入MySQL表(名为Contacts_table)这里的版本工作正常,没有任何错误:
<?php
// Includes
require_once 'Admin/Connector.php';
// Test if payload exists
if($_POST){
// Read payload into arrays
$ar = 0;
foreach($_POST as $entry){
$namenum = explode(',', $entry);
$names[$ar] = $namenum[1];
$numbers[$ar] = $namenum[0];
$ar += 1;
}
$namenum = NULL;
// Build SQL query
$sql = 'INSERT INTO Contact_table (NAME, PHONE) VALUES ';
$insertQuery = array();
$insertData = array();
$n = 0;
foreach ($numbers as $num) {
$insertQuery[] = '(?, ?)';
$insertData[] = $names[$n];
$insertData[] = $num;
$n++;
}
$sql .= implode(', ', $insertQuery);
$sql .= ' ON DUPLICATE KEY UPDATE name = COALESCE(VALUES(name), name);';
$n = NULL;
$num = NULL;
// Connect to MySQL database
$connect = dbconn(PROJHOST,PROJDB,PROJDBUSER,PROJDBPWD);
// Execute SQL query
$query = $connect->prepare($sql);
$query->execute($insertData);
$insertQuery = NULL;
$insertData = NULL;
$sql = NULL;
$query = NULL;
// Close connection to MySQL database
$connect = NULL;
}
?>
However, as you can see, I'm not using the bindParam() function here and just feeding the values directly to the execute() function. Many have recommended that I use bindParam() instead for server performance gains. Is it true or I am better off with this program as it stands? I did try writing and running a version of the above code using bindParam:
但是,正如您所看到的,我不是在这里使用bindParam()函数,只是将值直接提供给execute()函数。许多人建议我使用bindParam()代替服务器性能提升。它是真的还是我现在更喜欢这个项目?我尝试使用bindParam编写并运行上述代码的版本:
<?php
// Includes
require_once 'Admin/Connector.php';
// Test if payload exists
if($_POST){
// Read payload into arrays
$ar = 0;
foreach($_POST as $entry){
$namenum = explode(',', $entry);
$names[$ar] = $namenum[1];
$numbers[$ar] = $namenum[0];
$ar += 1;
}
$namenum = NULL;
// Build SQL query
$sql = 'INSERT INTO Contact_table (NAME, PHONE) VALUES ';
$insertQuery = array();
$insertData = array();
$n = 0;
foreach ($numbers as $num) {
$insertQuery[] = '(?, ?)';
$insertData[] = $names[$n];
$insertData[] = $num;
$n++;
}
$sql .= implode(', ', $insertQuery);
$sql .= ' ON DUPLICATE KEY UPDATE name = COALESCE(VALUES(name), name);';
$n = NULL;
$num = NULL;
// Connect to MySQL database
$connect = dbconn(PROJHOST,PROJDB,PROJDBUSER,PROJDBPWD);
// Prepare SQL query
$query = $connect->prepare($sql);
// Bind variables
foreach($insertData as $key => &$ins) {
$connect->bindParam($key+1,$ins);
}
// Execute SQL query
$query->execute();
$insertQuery = NULL;
$insertData = NULL;
$sql = NULL;
$query = NULL;
$key = NULL;
$ins = NULL;
// Close connection to MySQL database
$connect = NULL;
}
?>
But this code refuses to run and returns a fatal error – Call to undefined method PDO::bindParam(). What am I doing wrong here? I understand it's possible to write a much simpler code if I include execute() within the loop but that would spawn multiple queries which I want to avoid at all costs. My goal is a single query no matter what.
但是这段代码拒绝运行并返回致命错误 - 调用未定义的方法PDO :: bindParam()。我在这做错了什么?我理解,如果我在循环中包含execute(),那么编写一个更简单的代码是可能的,但这会生成我想要不惜一切代价避免的多个查询。无论如何,我的目标都是单一查询。
1 个解决方案
#1
You can't $connect->bindParam($key+1,$ins);. Because PDO object doesn't have such method. Only PDOStatement has. That is why you've got error message.
你不能$ connect-> bindParam($ key + 1,$ ins);.因为PDO对象没有这样的方法。只有PDOStatement有。这就是为什么你有错误信息。
You should :
你应该 :
$query->bindValue($key+1,$ins);
And you should use bindValue because if not, all your inserted values will get same value (the last one of $ins before you call execute).
您应该使用bindValue,因为如果没有,所有插入的值将获得相同的值(在调用execute之前$ ins中的最后一个)。
#1
You can't $connect->bindParam($key+1,$ins);. Because PDO object doesn't have such method. Only PDOStatement has. That is why you've got error message.
你不能$ connect-> bindParam($ key + 1,$ ins);.因为PDO对象没有这样的方法。只有PDOStatement有。这就是为什么你有错误信息。
You should :
你应该 :
$query->bindValue($key+1,$ins);
And you should use bindValue because if not, all your inserted values will get same value (the last one of $ins before you call execute).
您应该使用bindValue,因为如果没有,所有插入的值将获得相同的值(在调用execute之前$ ins中的最后一个)。