内存限制用完 [英] Memory limit exhausted

问题描述

在运行将大数据导入mysql的PHP脚本时，遇到以下错误:

While running a PHP script that imports large data into mysql, I encountered the following error:

memory exhausted near ''$GPGGA','130735.000','60.15751','N','24.74303','E','1','05','1.6','8.7','M','35' at line 1

我之前已经在我的PHP INI文件中分配了256M的内存限制.到目前为止，这种记忆已经足以应付我的便笺，到目前为止，我还没有遇到任何问题.我已导入文件大小为1MB和2.84MB，同时将内存限制保持为256MB.当我运行大约1MB的文本文件时，发生此错误.

I have before now, assigned a memory limit of 256M in my PHP INI file. This memory has so far been sufficient for my sripts and I have experienced no issues till now. I have imported files of size 1MB and 2.84MB while keeping the memory limit at 256MB. THis error occured when I runned a text file of about 1MB.

我假设错误所指向的内存是PHP内存限制.可以设置其他内存限制吗?对于解决此问题的一些建议，我将不胜感激.非常感谢.

I have assumed the memory the error is refering to is the PHP memory limit. Could there be any other memory limits to be set? I would appreciate some suggestions in resolving this problem. Many thanks.

新修改

...
...
if (is_array($inFile)) {

foreach($inFile as $inFileName) {

    $newFilePath = $upload_directory."/".$inFileName;

    if($inFileName != "")

    $handle = fopen($newFilePath,"r");
    $numlines =1;

    $query = "INSERT INTO gga_raw_data(device_id, gga_date,  nmea, gga_time, latitude, north, longitude, east, fixed_quality, no_of_satelites, hdop, altitude, meters, height_of_geoid, metres, check_sum, test_case_id) values";
    while (($data = fgetcsv($handle)) !== FALSE)
    {
        $numlines++;

        $myDay=substr($data[1], 0,2);
        $myMonth=substr($data[1], 2,2);
        $myYear=substr($data[1], 4,2);

        $gga_date = convertToNiceDate($myDay, $myMonth, 2000+$myYear);

        $longitude = convertToDegrees($data[6]);
        $latitude  = convertToDegrees($data[4]);


        if (!isset($data[16])) {
            $data[16] = '';
        }

        $query .="('$data[0]','$gga_date','$data[2]','$data[3]','$latitude','$data[5]','$longitude','$data[7]','$data[8]','$data[9]','$data[10]','$data[11]','$data[12]','$data[13]','$data[14]', '$data[15]', '$data[16])',";


    }

    $query = substr($query, 0,-1);

我不希望开始一个新问题，因为它仍然在这个问题上. 我已经解决了内存耗尽"问题，但是现在遇到了一个mySQL查询错误，这使我的生活变得十分痛苦，我需要帮助.

I do not wish to start a new question since it is still on this issue. I have resovled the " memory exhaustion" issue but now have a a mySQL query error has made my life quite miserable and I need help.

这是我从一个文本文件中输入的数据的示例:

This is a sample of my input data from a text file:

1,070610,$GPGGA,080323.460,6013.45368,N,02445.28396,E,1,04,4.6,18.3,M,35.0,M,,*67
1,070610,$GPGGA,080327.000,6013.44424,N,02445.31214,E,1,05,1.9,30.8,M,35.0,M,,*66

这是echo $ query的结果:

This is the result from echo $query:

INSERT INTO gga_raw_data(device_id, gga_date, nmea, gga_time, latitude, north, longitude, east, fixed_quality, no_of_satelites, hdop, altitude, meters, height_of_geoid, metres,check_sum) values('1','2010,06,07','$GPGGA','080323.460','60.22423','N','24.75473','E','1','04','4.6','18.3','M','35.0','M','')('1','2010,06,07','$GPGGA','080327.000','60.22407','N','24.7552','E','1','05','1.9','30.8','M','35.0','M','')
)('1','2010,06,07','$GPGGA','053416.000','0','','0','','0','','','','','','','')('1','2010,06,07','$GPGGA','053431.000','0','','0','','0','','','','','','','')('1','2010,06,07','$GPGGA','062929.000','0','','0','','0','','','','','','','')('1','2010,06,07','$GPGGA','080250.000','0','','0','','0','','','','','','','')('1','2010,06,07','$GPGGA','080305.000','0','','0','','0','','','','','','','')('1','2010,06,07','$GPGGA','080305.000','0','','0','','0','','','','','','','')('1','2010,06,07','$GPGGA','080320.000','0','','0','','0','','','','','','','')


You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '('1','2010,06,07','$GPGGA','080327.000','60.22407','N','24.7552','E','1','05','1' at line 1

我已经注意到，查询未解析输入数据中的最后一个变量"* 67".我不确定它是否以*.开头，因此无法识别.

I have come to notice that, the last variable "*67" from the input data is not being parsed by the query. I am not sure if it is not being recognised since it begins with *.

推荐答案

一次插入一行或将它们分批插入，例如一次插入50行...

Do the inserts one row at a time or batch them into, say 50 rows at a time...

$gen_query=$query; // keep $query as the stub

while (($data = fgetcsv($handle)) !== FALSE)
{
    $numlines++;

    ...
    $gen_query .="('$data[0]','$gga_date','$data[2]','$data[3]','$latitude','$data[5]','$longitude','$data[7]','$data[8]','$data[9]','$data[10]','$data[11]','$data[12]','$data[13]','$data[14]', '$data[15]', '$data[16])',";
   if ($numlines % 50 == 0) {
      mysql_query(substr($gen_query,0,-1));
      $gen_query=$query;
   }
}
if ($gen_query!=$query) mysql_query(substr($gen_query,0,-1));

这篇关于内存限制用完的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！