A brief analysis of php.exe running under Dos the solution of php_mbstring.dll error cannot be found

In the php.ini file, move extension= php_mbstring.dll to extension= php_exif.dll.

Because exif calls mbstring, mbstring must come first.

php_exif.dll, EXIF library, php_mbstring.dll required.

And in ES27en.ini, ES29en_ES30en.dll must be loaded after ES32en_mbstring.dll.

If not, check that the default value of extension_dir in ES37en.ini is extension_dir = "./" and change this to extension_dir = "ext/".