从特定行读取文件，直到laravel中的另一个特定行

I have file like this

#####
....
....
.....
###one
... 
...
...
###two
.... 
....
##### 

I want read from ###one until ###two
I don't want to read line by line

Just tested, this works perfectly:

preg_match('/###one(.*?)###two/s', $fileContents, $output);

echo $output[1];

Alternative way for consideration but also need to read the entire file:

<?php
$s = file_get_contents('the_file'); 
$ans = explode('###two', explode('###one', $s, 2)[1], 2)[0]; 
echo $ans;