从文本文件中删除空白行 [英] Remove blank lines from a text file

问题描述

我有一个文本文件，其中有一些空白行.意思是没有任何内容的行仅占用空间.

I have a text file that has some blank lines in it. Meaning lines that have nothing on them and are just taking up space.

它看起来像这样:

The

quick
brown

fox jumped over
the

lazy dog

我需要它看起来像这样:

and I need it to look like this:

The
quick
brown
fox jumped over
the
lazy dog

我如何删除那些空白行，只取包含内容的行并将其写入新文件?

How can I remove those blank lines and take only the lines with the content and write them to a new file?

这是我知道该怎么做:

$file = fopen('newFile.txt', 'w');
$lines = fopen('tagged.txt');
foreach($lines as $line){
    /* check contents of $line. If it is nothing or just a \n then ignore it.
    else, then write it using fwrite($file, $line."\n");*/
}

推荐答案

如果文件不是太大:

file_put_contents('newFile.txt',
                  implode('', file('tagged.txt', FILE_SKIP_EMPTY_LINES)));

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