我很难过这个。我在PHP / MySQL的初学者水平以上,在这个网站上发布很新。 GoDaddy把我转到一个网格服务器来提高性能,并通过我编写脚本的方式解决问题。它从CSV中抓取数据并尝试插入规范化数据库。
CSV未规范化,因此需要检查是否存在某些内容。我最初打开/关闭结果集,但后来建议我使用准备好的语句,不幸的是我遇到了同样的问题。在获得广泛的“内部服务器错误”之前,我可以通过大约1200条14k记录。日志中的错误引用了一个安全功能,可以防止在短时间内过多地访问FastCGI服务器。
我想要找到并学习的是完成我想要做的事情的正确方法 - 检查是否存在某些东西;如果是,请获取记录ID。如果没有,请插入数据并获取新ID。我的代码如下。它从简单的php文件上传表单中获取文件名和隐藏属性,然后从那里开始。这只会由我使用,我插入的数据是公共记录,因此安全性不是主要问题。
<?php
if ($_POST["upload"] == "1") {
//Connect to the database
$hostname = xxx;
$username = xxx;
$dbname = xxx;
$password = xxx;
$dbh = mysqli_connect($hostname,$username,$password,$dbname) or die("Problem connecting: ".mysqli_error());
$stmt = mysqli_stmt_init($dbh);
//check for file errors
if ($_FILES["file"]["error"] > 0)
{ echo "Return Code: " . $_FILES["file"]["error"] . "<br>"; }
//No file errors
else
{
//If file already exists
if (file_exists($_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " already exists.";
exit;
}
//If it doesn't exist
else
{
move_uploaded_file($_FILES["file"]["tmp_name"],
$_FILES["file"]["name"]);
echo "Stored in: " . $_FILES["file"]["name"] . "<br><br>";
$strFileName = $_FILES["file"]["name"];
}
}
//File reporting
echo "Upload: " . $_FILES["file"]["name"] . "<br>";
echo "Type: " . $_FILES["file"]["type"] . "<br>";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>";
$row = 0;
if (($handle = fopen($strFileName, "r")) !== FALSE) {
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
$num = count($data);
$row++;
$strPermitNo = trim($data[0]);
//Check to see if the permit is already in the database
$sql = "SELECT LocID FROM tbl_TABC_Locations WHERE LocPermitNo = ?";
if (mysqli_stmt_prepare($stmt, $sql))
{
mysqli_stmt_bind_param($stmt, "s", $strPermitNo);
mysqli_stmt_bind_result($stmt, $intLocID);
mysqli_stmt_execute($stmt);
$strPermitResult = 0;
while (mysqli_stmt_fetch($stmt))
{
$strPermitResult = $intLocID;
}
}
//If no permits, insert it
if ($strPermitResult == "0")
{
//Clean Location name
$strLocName = trim($data[1]);
$strLocName = str_replace('"', "", $strLocName);
$strLocName = str_replace(";","-", $strLocName);
$strLocName = addslashes($strLocName);
$strInsertQuery = "INSERT INTO tbl_TABC_Locations (LocName,LocAddress,LocCity,LocState,LocZip,LocCounty,LocPhone,LocPermitNo) VALUES (?, ?, ?, ?, ?, ?, ?, ?)";
if (mysqli_stmt_prepare($stmt, $strInsertQuery))
{
mysqli_stmt_bind_param($stmt, 'ssssiiis', $field1, $field2, $field3, $field4, $field5, $field6, $field7, $field8);
$field1 = $strLocName;
$field2 = trim(addslashes($data[2]));
$field3 = trim(addslashes($data[3]));
$field4 = trim($data[4]);
$field5 = trim($data[5]);
$field6 = trim($data[6]);
$field7 = trim($data[7]);
$field8 = $strPermitNo;
mysqli_stmt_execute($stmt);
$intLocID = mysqli_insert_id($dbh);
}
}
else
{
$intLocID = $strPermitResult;
}
//Report dates
$strReportDate = trim($data[8]);
$aryNewDate = explode("/", $strReportDate);
$strNewYear = $aryNewDate[0];
$strNewMonth = $aryNewDate[1];
//Check to see if the report date is already in there
$sql = "SELECT ReportDateID FROM tbl_TABC_ReportDates WHERE ReportYear = ? AND ReportMonth = ?";
if (mysqli_stmt_prepare($stmt, $sql))
{
mysqli_stmt_bind_param($stmt, "ii", $strNewYear, $strNewMonth);
mysqli_stmt_bind_result($stmt, $intReportDateID);
mysqli_stmt_execute($stmt);
$strReportDateResult = 0;
while (mysqli_stmt_fetch($stmt))
{
$strReportDateResult = $intReportDateID;
}
}
if ($strReportDateResult == "0")
{
$strInsertQuery = "INSERT INTO tbl_TABC_ReportDates (ReportMonth,ReportYear) VALUES (?, ?)";
if (mysqli_stmt_prepare($stmt, $strInsertQuery))
{
mysqli_stmt_bind_param($stmt, "ii", $field1, $field2);
$field1 = $strNewMonth;
$field2 = $strNewYear;
mysqli_stmt_execute($stmt);
$intDateID = mysqli_insert_id($dbh);
}
}
else
{
$intReportDateID = $strReportDateResult;
}
//Check to see if they have reported for the month already, and if not, add the report
$sql = "SELECT ReportID FROM tbl_TABC_Reports WHERE ReportDateID = ? AND LocID = ?";
if (mysqli_stmt_prepare($stmt, $sql))
{
mysqli_stmt_bind_param($stmt, "ii", $intReportDateID, $intLocID);
mysqli_stmt_bind_result($stmt, $intReportID);
mysqli_stmt_execute($stmt);
$strReportIDResult = 0;
while (mysqli_stmt_fetch($stmt))
{
$strReportIDResult = $intReportID;
}
}
if ($strReportIDResult == "0")
{
$strInsertQuery = "INSERT INTO tbl_TABC_Reports (LocID,ReportDateID,TaxReceipts) VALUES (?, ?, ?)";
if (mysqli_stmt_prepare($stmt, $strInsertQuery))
{
mysqli_stmt_bind_param($stmt, "iid", $field1, $field2, $field3);
$field1 = $intLocID;
$field2 = $intReportDateID;
$field3 = trim($data[9]);
mysqli_stmt_execute($stmt);
echo "New report<br>\n";
}
}
else { echo "<b>Already reported</b><br>"; }
}
echo "Closing file now";
fclose($handle);
}
mysqli_close($dbh);
}
日志中的错误是:
[2436594] [fcgid:warn](104)通过对等方重置连接:[client xxx] mod_fcgid:从FastCGI服务器读取错误,引用(我的网页地址)
[fcgid:warn](104)通过对等方重置连接:[client xxx] mod_fcgid:ap_pass_brigade在handle_request_ipc函数,referer(我的网页地址)中失败
编辑12/15(在循环之外拉出准备好的语句)。现在我仍然得到“准备语句中的变量数量不匹配”错误:
$sql1 = "SELECT LocID FROM tbl_TABC_Locations WHERE LocPermitNo = ?";
$ps_ChkPermit = mysqli_stmt_prepare($stmt, $sql1);
if ($ps_ChkPermit)
{
mysqli_stmt_bind_param($stmt, "s", $strPermitNo);
mysqli_stmt_bind_result($stmt, $intLocID);
mysqli_stmt_execute($stmt);
...
}
答案 0 :(得分:2)
通常,您希望从循环内移除尽可能多的计算到循环外部。因为在循环的每次迭代期间,每行代码都会反复执行。
@MikeW建议您尽可能减少脚本的资源需求。请考虑以下示例(未经测试的代码!):
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
$sql = "SELECT LocID FROM tbl_TABC_Locations WHERE LocPermitNo = ?";
if (mysqli_stmt_prepare($stmt, $sql)) // <-- this keeps running every time.
{
mysqli_stmt_bind_param($stmt, "s", $strPermitNo);
mysqli_stmt_bind_result($stmt, $intLocID);
mysqli_stmt_execute($stmt);
...
}
}
为什么每次都要反复准备你的SQL语句?
$sql = "SELECT LocID FROM tbl_TABC_Locations WHERE LocPermitNo = ?";
// this statement gets prepped outside the loop and runs only once.
$prepared_statement = mysqli_stmt_prepare($stmt, $sql);
// loop starts...
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
if ($prepared_statement)
{
// and then you simply bind the params and execute from within the loop.
mysqli_stmt_bind_param($stmt, "s", $strPermitNo);
mysqli_stmt_bind_result($stmt, $intLocID);
mysqli_stmt_execute($stmt);
...
}
}
这样,您可以节省资源,尤其是当您必须处理CSV中的多行时。
当然,这意味着您需要为不同的查询使用不同的变量名称,以便识别每个查询。在您当前声明$stmt
他的建议的第二部分涉及更多的工作。要减少查询数,可以在数据库中创建一个包含YEAR和MONTH的新字段,并将其设置为mysql中的UNIQUE
索引。这样,如果您尝试插入现有记录,mysql将抛出并发生错误。
如果插入时出错,您可以假设您有该日期的报告。如果您没有错误,则报告是新的。
然后你没有额外的步骤准备另一个查询只是为了检查报告是否存在!
正如我上面所指出的,您还可以减少CSV文件的大小,这样就不需要太长时间才能完成。
根据@ halfer的建议,使用PHP-CLI运行此脚本可能更简单。没有内存限制超时 - 但这意味着你需要在某处保存上传的文件并使用cron任务来处理它们......
需要熟悉命令行:)
希望这会让事情变得清晰......祝你好运!