Bug #79118 [Com]: mb_ereg_replace function cannot replace strings

Edit report at https://bugs.php.net/bug.php?id=79118&edit=1 ID: 79118 Comment by: minhlt82 at gmail dot com Reported by: minhlt82 at gmail dot com Summary: mb_ereg_replace function cannot replace strings Status: Feedback Type: Bug Package: mbstring related Operating System: Linux PHP Version: 7.4.1 Block user comment: N Private report: N New Comment: @Requinix: Thank you for the super fast support. For the replacement of the binary string, following your link https://3v4l.org/ofV7G I am still facing a problem that the hex value of binary string before and after the conversion (by mb_convert_encoding)is changed from f8f7 to 3fc3b7. Could you please help me to check here https://3v4l.org/JE5r8 Thank you so much. Previous Comments: ------------------------------------------------------------------------ [2020-01-15 02:22:22] requinix@php.net Seems to be working fine. https://3v4l.org/Z575v https://3v4l.org/ofV7G Because you can't pass raw binary data to something that operates on characters. ------------------------------------------------------------------------ [2020-01-15 02:00:31] minhlt82 at gmail dot com Description: ------------ The mb_ereg_replace function cannot replace strings that contain some characters with the SJIS encoding. In these cases, the result is NULL. It works well with PHP versions < 7.1 but fails with PHP 7.1 and above. Test script: --------------- mb_regex_encoding('SJIS'); $string = "hello ここに文を入れる。"; $pattern = "hello"; $replacement = 'hi'; //expected result: hi ここに文を入れる。 //but it returns NULL var_dump(mb_ereg_replace($pattern, $replacement, $string)); //Similar error for binary strings, you can test more here. //http://sandbox.onlinephpfunctions.com/code/1a741afb48b299c6f335d9175be730a5ec3854d5 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79118&edit=1