本地主机和服务器在内存分配和利用方面的区别 - PHP

Question

我有一个 PHP 脚本，我从 csv 读取数据并将值导入到数组中进行计算。我已经使用 WAMP 在 localhost 上构建了这个大型脚本，并且一切正常。我现在已将其放入网络服务器，并且大约在中途收到内存错误（我没有在本地主机中收到）

为了排除故障，我在我的代码段中加入了以下代码：

echo memory_get_usage();

并已注释掉所有部分并继续工作，直到出错为止。

在第一段，我为本地主机分配了 2.16 MB 的内存，为网络服务器分配了 1.29 MB。 在第二段，我为本地主机分配了 2.32 MB 的内存，为网络服务器分配了 1.57 MB。

但是在第三段我得到 localhost 3.32 MB 但对于服务器我得到以下错误：

致命错误：内存不足（分配326631424）（试图分配71 字节）在/home/blablabla

有人知道是什么原因造成的吗？该文件来自同一目录，下面是代码。这是一个足球计算器，可以读取历史数据来计算梦幻足球积分，只有 194 行

无论如何，我都不是一个优秀的程序员，我正在使用这个项目来学习我的第一门语言。这是我写的第一段代码，所以我确定它需要重做（我可能会），但我没有看到导致这种情况的错误。是我正在创建的数组数量吗？为什么它可以在 localhost 但不能在网络服务器中工作？使用siteground作为主机

感谢您抽出宝贵时间

$file_handle = fopen("football/Historical/QBHIST.csv", "r");    //opens historical csv file of qb

    while (!feof($file_handle) ) {                      //while the end of file is not reached, populate arrays as listed below. 

        $line_of_text = fgetcsv($file_handle, 1024);        //line of text[n] is the value after each comma delimeter in the handle file 
        $PName = $line_of_text[0];                          //player name
        $PTeam = $line_of_text[1];                          //team
        $PPlays = $line_of_text[2];                         //plays played
        $PGamesPlayed = $line_of_text[3];                   //games played
        $PRushAtt = $line_of_text[4];                       //rush attempts
        $PRushYd = $line_of_text[5];                        //rush yards
        $PRushTD = $line_of_text[6];                        //rush td
        $PPassAtt = $line_of_text[7];                       //pass attempts
        $PPassComp = $line_of_text[8];                      //pass completions
        $PPassYard = $line_of_text[9];                      //pass yards
        $PPassTD = $line_of_text[10];                       //pass td
        $PFumbLst = $line_of_text[11];                      //fumbles lost
        $PIntThr = $line_of_text[12];                       //interceptions thrown
        $PYear = $line_of_text[13];                         //season year
        $PPos = $line_of_text[14];                          //player position
        $PRecTD = $line_of_text[15];                        //receiving td
        $PRecYd = $line_of_text[16];                        //receiving yards
        $PRecCat = $line_of_text[17];                       //receptions
        $PRecTar = $line_of_text[18];                       //targets
        $PRecDrp = $line_of_text[19];                       //drops
        $PIncThr = $PPassAtt - $PPassComp;                  //pass incompletions

        if ($PGamesPlayed <= 0){                            //in case the CSV is wrong - Zeroes create weird results (but only have an effect in SUPER SUPER SUPER deep leagues (like 300+ players)
            $PGamesPlayed = 1;
        }   



        if ($PassYdValue == 0){                     //these are to prevent n/0 errors.
            $PassYdValue = 100000000000000000;
        }

        if ($RushYdValue == 0){
            $RushYdValue = 100000000000000000;      //these are to prevent n/0 errors.
        }

        if ($RecYdValue == 0){
            $RecYdValue = 100000000000000000;       //these are to prevent n/0 errors.
        }

        //points scored formula
        $QBPoints = 
        ($PPassTD * $PassTdValue) +
        ($PPassYard / $PassYdValue) +
        ($PPassComp * $PassCompValue) +
        ($PIntThr * $PassIntValue) +
        ($PIncThr * $PassIncValue) +
        ($PPassAtt * $PassAttValue) +
        ($PRushAtt * $RushAttValue) +
        ($PRushTD * $RushTdValue) +
        ($PRushYd / $RushYdValue) +
        ($RushFumbValue * $PFumbLst)  +
        ($PRecTD * $RecTdValue) +
        ($PRecYd / $RecYdValue) +   
        ($PRecTar * $RecTarValue) +
        ($PRecCat * $RecCatValue) + 
        ($ArrayKey / 10000000)* -1;                 //this arraykey/billion is to prevent duplicate scores that might have an effect. each player = unique score

        $PointsArray[$ArrayKey] = $QBPoints;                        //populates arrays for calc'd points to remain UNSORTED 
        $NamesArray[$ArrayKey] = $PName;                            //populates array for player name
        $YearArray[$ArrayKey] = $PYear;                             //populates array for year
        $GamesArray[$ArrayKey] = $PGamesPlayed;                     //populates array for games played
        $PTDArray[$ArrayKey] = $PPassTD;                            //populates array for pass td 
        $RTDArray[$ArrayKey] = $PRushTD;                            //populates array for rush td 
        $PYdArray[$ArrayKey] = $PPassYard;                          //populates array for pass yards
        $RYdArray[$ArrayKey] = $PRushYd;                            //populates array for rush yards
        $PPGArray[$ArrayKey] = $QBPoints / $PGamesPlayed;           //populates array for Points per game to remain UNSORTED
        $PPGSortArray[$ArrayKey] = $QBPoints / $PGamesPlayed;       //populates array for Points per game to be SORTED
        $PosArray[$ArrayKey] = "QB";                                //populates array for position

        $PAttArray[$ArrayKey] = $PPassAtt;                          //populates array for PassATT
        $PCompArray[$ArrayKey] = $PPassComp;                        //populates array for PassComp
        $RAttArray[$ArrayKey] = $PRushAtt;                          //populates array for RushATT
        $PIntArray[$ArrayKey] = $PIntThr;                           //populates array for interceptions thrown

        $CatArray[$ArrayKey] = $PRecCat;                            //populates array for Catches
        $CYdArray[$ArrayKey] = $PRecYd;                             //populates array for receiving yards
        $CTDArray[$ArrayKey] = $PRecTD;                             //populates array for receiving TD

        $FumbArray[$ArrayKey] = $PFumbLst;                          //populates array for fumbles

        $ArrayKey = $ArrayKey + 1;
    }   

    array_pop($PointsArray);
    array_pop($NamesArray);
    array_pop($YearArray);
    array_pop($GamesArray);
    array_pop($PTDArray);
    array_pop($RTDArray);
    array_pop($PYdArray);
    array_pop($RYdArray);
    array_pop($PPGArray);
    array_pop($PPGSortArray);
    array_pop($PosArray);
    array_pop($PAttArray);
    array_pop($RAttArray);
    array_pop($PIntArray);
    array_pop($CatArray);
    array_pop($CYdArray);
    array_pop($CTDArray);
    //array_pop($GamesArray);

    fclose($file_handle);                           //close your csv silly!

    echo "<br>";
    echo "made it to QB";
    echo memory_get_usage();

Answer 1

不完全确定代码本身，但内存分配不是静态的。仅仅因为您本地机器上的 WAMP 设置为处理内存使用并不意味着您的网络服务器上安装了 php。

我建议设置一个 phpinfo 文件并将您的 WAMP 版本的 php 与您的托管版本进行比较。您应该能够快速看到两者之间的差异。您可以设置本地 WAMP 安装以匹配您的托管版本，或要求您的虚拟主机更改他们的。

如果您在共享服务器上，您在托管端可能不会有太多运气，但值得一试。

希望对一些人有所帮助。