PHP：在文本文件中的每个 $num 单词后插入换行符

Question

我想通过在每 4 个单词后插入换行符来清理 .txt 文件以使其更具可读性。该文件已被数组中的数据填充。

这是我目前通过查看this 和this 得出的结论：

<?php
require "simple_html_dom.php";

$html = file_get_html("http://www.lipsum.com/");

$data = array();
$counter = 0;


foreach($html->find("div") as $tr){
    $row = array();
    foreach($tr->find("div") as $td){
        $row[] = $td->plaintext;
    }
     $data[] = $row;

    }


ob_start();
var_dump($data);

$data = preg_replace('~((\w+\s){4})~', '$1' . "\n", $data);
file_put_contents('new_text_file.txt', $data);


//$handlefile = fopen("newfile.txt", "w") or die("Unable to open file!");
//file_put_contents('newfile.txt', $data);
//$output = ob_get_clean();
//$outputFile = "newfile.txt";


//fwrite($handlefile, $output);
//fclose($handlefile);



?>

如您所见，我创建了一个 for 循环和两个 if 语句来“计算”单词之间的间距，当 counter 变量达到 3 时，插入一个换行符。但它不起作用，因为首先没有将网站上的数据打印到文本文件中。但是，如果我删除了 for 循环和 if 语句，当然没有排序，它就可以工作。 任何类型的帮助都可以得到！

编辑：更新代码。

编辑 2：最终工作版本。原始问题留待进一步参考。

这是最终的工作版本：

<?php
require "simple_html_dom.php";

$html = file_get_html("http://www.lipsum.com/");
$data = array();
$counter = 0;


foreach($html->find("div") as $tr){
    $row = array();
    foreach($tr->find("div") as $td){
        $row[] = $td->plaintext;
    }
     $data[] = $row;

    }


ob_start();
var_dump($data);
$handlefile = fopen("newfile.txt", "w") or die("Unable to open file!");
file_put_contents('newfile.txt', $data);
$output = ob_get_clean();
$outputFile = "newfile.txt";
fwrite($handlefile, $output);
fclose($handlefile);

function MakeFileReadable($source , $export) {

    $content = file_get_contents($source);
    $x = explode (" " , $content);

    $newx = "";
    $count = 1;
    foreach ($x as $word) {
        $newx .= $word . " ";
        if ($count %12 ==0) $newx .= "\r\n";
        $count ++;
    }

    $fp = fopen("file-export.txt" , 'w');
    if (!$fp) die("There is a problem with opening file...");
    fwrite($fp , $newx);
    fclose($fp);

}

MakeFileReadable("newfile.txt" , "file-export.txt");

?>

Answer 1

使用一些数组函数

$string = "one two three four five six seven eight nine ten eleven tweleve thirteen fourteen";

$arr = explode (" " , $string);
$lines = array_chunk($arr,4);
foreach($lines as $line) 
   echo implode (" ", $line)."\r\n";

结果

one two three four
five six seven eight
nine ten eleven tweleve
thirteen fourteen

Answer 2

这是一个正则表达式解决方案。

<?php
$test = 'one two three four five six seven eight nine ten eleven tweleve thirteen fourteen';
echo preg_replace('~((\w+\s){4})~', '$1' . "\n", $test);

输出：

one two three four 
five six seven eight 
nine ten eleven tweleve

\w 是一个单词字符（字母数字字符加“_”，http://en.wikipedia.org/wiki/Regular_expression），如果您只想要A-Z，请使用[a-z] 并使用i 修饰符使其不区分大小写，~((\w+\s){4})~i . \s 是一个空格，{4} 需要出现 4 次 \w+\s。

根据您的代码...

$data = preg_replace('~((\w+\s){4})~', '$1' . "\n", $data);
file_put_contents('new_text_file.txt', $data);

http://php.net/manual/en/function.file-put-contents.php

每个更新的代码：

<?php
require "simple_html_dom.php";
$html = file_get_html("http://www.lipsum.com/");
$data = array();
$counter = 0;
foreach($html->find("div") as $tr){
    $row = array();
    foreach($tr->find("div") as $td){
        $row[] = $td->plaintext;
    }
    $data[] = $row;
}
$data = preg_replace('~((\w+\s){4})~', '$1' . "\n", implode(' ', $data));
file_put_contents('new_text_file.txt', $data, FILE_APPEND | LOCK_EX);

Answer 3

最终测试代码：

    <?php
function MakeFileReadable($source , $export) {

    $content = file_get_contents($source);
    $x = explode (" " , $content);

    sort($x);
    $newx = "";
    $count = 1;
    foreach ($x as $word) {
        $newx .= $word . " ";
        if ($count %4 ==0) $newx .= "\r\n";
        $count ++;
    }

    $fp = fopen($export , 'w');
    if (!$fp) die("There is a problem with opening file...");
    fwrite($fp , $newx);
    fclose($fp);

}

MakeFileReadable("file-input.txt" , "file-export.txt");