PHP和CSV文件+增量

-1

我需要的代码是创建一个新的CSV并将其称为output_1.csv，将100行写入该CSV，然后保存它，创建output_2.csv并写入100行，并继续创建100行文件，直到所有信息都用尽。有人可以帮我弄这个吗？PHP和CSV文件+增量

这是我必须与之合作。目前，它只是写入1个文件，直到所有内容都用完为止。实际上，我需要一次做10万行，但为了测试目的，100行很好，我可以改变它。

<?php 

include "base.php"; 

//$result1 = mysql_query("SELECT * FROM pts_ultd , scrape_data WHERE pts_ultd.B == scrape_data.R"); 

$a = "4"; 

$result1 = mysql_query("SELECT * FROM scrape_data , pts_ultd WHERE pts_ultd.P_B = scrape_data.S_R && pts_ultd.P_E != '".$a."' "); 

//grab all the content 
while($r=mysql_fetch_array($result1)) 
{ 
$A = $r["S_A"]; 
$B = $r["S_B"]; 
$C = $r["S_C"]; 
$D = $r["S_D"]; 
$E = $r["S_E"]; 
$F = $r["S_F"]; 
$G = $r["S_G"]; 
$H = $r["S_H"]; 
$I = $r["S_I"]; 
$J = $r["S_J"]; 
$K = $r["S_R"]; 
$L = $r["S_L"]; 
$M = $r["S_M"]; 
$N = $r["S_N"]; 
$O = $r["S_O"]; 
$P = $r["S_P"]; 
$Q = $r["S_Q"]; 
$R = $r["S_R"]; 
$S = $r["P_D"]; 

//this is where the intering of the data takes place currently.. 
$cvsData = $A . "," . $B . "," . $C . "," . $D . "," . $E . "," . $F . "," . $G . "," . $H . "," . $I . "," . $J . "," . $K . "," . $L . "," . $M . "," . $N . "," . $O . "," . $P . "," . $Q . "," . $R . "," . $S ."\n"; 


$fp = fopen("feed_output.csv","a"); // $fp is now the file pointer to file $filename 

if($fp){ 
fwrite($fp,$cvsData); // Write information to the file 
fclose($fp); // Close the file 



} // end if 



}//end while 


?>

来源

2011-04-04 Mitch

如果您提出具体问题，而不是要求人们为您编写代码，您将会有更多的运气。 – 2011-04-04 01:05:58

您可以通过保持计数器变量做到这一点很容易。

$i++; 
$file_index = floor($i/100); 

file_put_contents("output.$file_index.csv", $cvsData, 
        FILE_APPEND|LOCK_EX);

最后一行代替你的fopen/fwrite/fclose构造。

来源

2011-04-04 01:08:23 mario

这是非常基本的东西。一个简单的“状态机”会为你做这件事：

$lines = 0; 
$repeats = 0; 
$fh = fopen("feed_output-{$repeats}", "wb"); 
while(... generate a row...) { 
    fwrite($fh, $row); 
    if ($lines % 100 = 0) { 
     fclose($fh); 
     $repeats++; 
     fopen("feed_output-{$repeats}", "wb"); 
    } 
    $lines++; 
} 
fclose($fh);

基本上，打开一个文件，然后开始写出行。如果写入的行数是100的倍数，请关闭前一个文件，打开一个新文件，然后继续使用新文件名。重复直到完成，然后关闭最后一个文件。

来源

2011-04-04 01:09:00

PHP和CSV文件+增量

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