PHP iconv encoding conversion in file

Convert utf-8 to GBK

$data = iconv("utf-8","GBK//IGNORE",$data);

Convert GBK to utf-8

$data = iconv("GBK","utf-8//IGNORE",$data);

IGNORE, let the iconv() function ignore the error and continue execution.

Simple use in file_put_contents and file_get_contents

    <?php
    $str = '少时诵诗书所所';
    $filename = '文件名.txt';
    file_put_contents($filename, $str);
    $st = file_get_contents($filename);
    echo $st;

The following error will be reported

Warning: file_put_contents(文件名.txt): failed to open stream

Warning: file_get_contents(文件名.txt): failed to open stream

The file name is Chinese garbled. Convert the encoding of non-GBK character set to GBK.
Generally, the file is encoded in utf-8, but the system defaults to gbk. So first convert the file name to gbk and then read it.

    <?php
    $str = '少时诵诗书所所';
    $filename = '文件名.txt';
    file_put_contents(@iconv('UTF-8','GBK',$filename),$str);
    $st = file_get_contents(@iconv('UTF-8','GBK',$filename));
    echo $st;

Normal execution---convert Chinese file name encoding to GBK without garbled characters

Of course, the content can also be forced to be converted to utf-8 to prevent garbled characters.