Question

I m 寻求一种非常快的方法,读到一只纸上。我的数据结构就是这样:

timestamp ,float     , string    ,ip          ,string
1318190061,1640851625, lore ipsum,84.169.42.48,appname

并且用植被图五将这一数据输入阵列。

问题:业绩。文字必须经常阅读(和处理)超过10 000个条目。

我的第一次尝试非常简单:

//Performance: 0,141 seconds / 13.5 MB

while(!feof($statisticsfile)) 
    {
    $temp = fgetcsv($statisticsfile);
    $timestamp[] = $temp[0];
    $value[] = $temp[1];
    $text[] = $temp[2];
    $ip[] = $temp[3];
    $app[] = $temp[4];
    }

我的第二个尝试:

//Performance: 0,125 seconds / 10.8 MB

while (($userinfo = fgetcsv($statisticsfile)) !== FALSE) {
   list ($timestamp[], $value[], $text, $ip, $app) = $userinfo;
}

Is there any way to improve performance even further, or is my method as fast as it could get?
Probably more important: Is there any way to define what columns are read, e.g. sometimes only the timestamp, float columns are needed. Is there any better way than my way (have a look at my second attempt :)

感谢:

Answer 1

时间最长? 顺便提一下,作为第二参数,你看到了最大的改善。

Answer 2

Check time that PHP read this file:

如果是大宗移案,则将案卷移至斜线或SSD

[..]sometimes only the timestamp

类似情况

preg_match_all( #d{10},d{10}, (.*?),d.d.d.d,appname# ,$f,$res);

print_r($res);

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