fgets/fwrite循环php

我的循环有问题

我有一个文本文件，看起来像这样

<?php
$file = "cities.txt";
$file_w = "cities.sql";
$f = fopen($file, "r");
$nf = fopen($file_w, "w+");

for($l = 0; $l<2; $l++){


$line = fgets($f);
$ex = preg_split('/\s+/', $line);

foreach($ex as $k => $v){

    echo $ex[0].' '. $ex[1];
    echo '<br>';

    $fw = fwrite($nf, "('" . $ex[0] . "','"  . $ex[1] . "')\r\n");

}
}






fclose($f);
fclose($nf);
?>

安克瑟雷拉

维拉

索纳斯

索尔德

小马

独奏曲

艾尔塔特酒店

圣朱莉娅·德洛里亚酒店

圣女贞德卡塞勒斯酒店

除了我有超过200万行之外

我需要将其放入sql请求中进行插入

在过去的12个小时里，我一直在尝试，但没有成功

我试过这样做

<?php
$file = "cities.txt";
$file_w = "cities.sql";
$f = fopen($file, "r");
$nf = fopen($file_w, "w+");

for($l = 0; $l<2; $l++){


$line = fgets($f);
$ex = preg_split('/\s+/', $line);

foreach($ex as $k => $v){

    echo $ex[0].' '. $ex[1];
    echo '<br>';

    $fw = fwrite($nf, "('" . $ex[0] . "','"  . $ex[1] . "')\r\n");

}
}






fclose($f);
fclose($nf);
?>

---

因为您在while循环中嵌套了foreach循环，所以您不必要地将行分成了太多的部分，并且您的逻辑存在缺陷

<?php
$infile = "cities.txt";
$outfile = "cities.sql";
$rh = fopen($infile, "r");
$wh = fopen($outfile, "w+");

//this has to change because a blank line or a line that is simply '0' will break the loop
while( ($line = fgets($rh, 4096000)) !== false ) {
    $parts = preg_split('/\s+/', $line, 2); //limit to splitting into TWO parts, state and city.
    $state = $parts[0];
    $city = preg_replace("/'/", '&#39;', $parts[1]); //replace stray apostrophes
    $output = sprintf("('%s','%s')\r\n", $state, $city)
    fwrite($wh, $output)
}

fclose($rh);
fclose($wh);