PHP Post Data会覆盖以前的文本

Question

This is the code I am using to post data to txt file on server. I got this from another question on Stackoverflow:

file_put_contents('test.txt', file_get_contents('php://input'));

The code overwrites all previous text in test.txt everytime. How can I make it insert? I know that if I use fopen, I can make it insert by adding a+

$file=fopen(date("Y-m-d").".txt","a+")

Where should I add a+ in file_put_contents?

Answer 1

file_put_contents() supports an optional third parameter: $flags. Pass the flag FILE_APPEND to file_put_contents() to make it append to the file rather than overwriting it:

file_put_contents('test.txt', file_get_contents('php://input'), FILE_APPEND);