删除.txt文件(php)中两个符号之间的特定行 [英] delete a specific lines between two symbols in .txt file (php)

问题描述

我如何使用php删除文本文件中两美元之间的行:

How can i delete lines in text file which are between two dollars with php :

lorem upsum  lorem upsum 
lorem upsum  lorem upsum lorem upsum
$

lorem upsum
lorem upsum
lorem upsum

$
lorem upsum
lorem upsum
lorem upsum

lorem upsum
lorem upsum
lorem upsum

谢谢

推荐答案

这不是一件容易的事，但是可行.

This wasn't an easy task, but this works.

$source_file = file_get_contents('file.txt');
$source = preg_replace('/(\$)(.*)(\$)/s',"$1 $3", $source_file);

file_put_contents('file.txt', $source);
echo $source;

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