PHP processing CSV---Chinese exception

Yesterday I used PHP to write a small program for processing csv files. It was processed normally on both the local and 21 servers

But after I put it on the 238 server at night, I found that the program processed abnormally and some data was missing.

After handling the exception, it was found that the missing data were all in Chinese.

At first I thought it was a file or string encoding problem

After using notepad++ to convert the csv file to utf-8, the problem still exists

Then

<span style="font-size:14px;">$date = mb_detect_encoding($content , array('UTF-8','GBK','LATIN1','BIG5')) ;  
		$content = iconv($date, "utf-8", $content);</span>

still failed to solve the problem

Then I did a little Baidu

and found that adding a line of code before processing the csv file: setlocale(LC_ALL,NULL)

setlocale() function sets regional information (regional information).

Regional information is language, currency, time and other information for a geographical area.

This function returns the current locale settings, or false if failed.

Note: The setlocale() function only changes the region information for the current script.

Tips: You can set the region information as the system default through setlocale(LC_ALL,NULL).

Record it here to avoid such problems in the future

The above introduces PHP's handling of CSV---Chinese exceptions, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.