Description:
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---
From manual page: http://www.php.net/function.file-get-contents
---
in php 5.x upto 7.0.x

file_get_contents('merge.json', false, null, -1); 

returns complete file content

in PHP 7.2.3-1ubuntu1 (cli) (built: Mar 14 2018 22:03:58) ( NTS )

file_get_contents('merge.json', false, null, -1);

return only last character (\n)

This breaks backward compatibility for me


Test script:
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<?php

print file_get_contents('some_file.txt', false, null, -1);