Home > Article > Backend Development > A brief analysis of the solution to the error php_mbstring.dll not found when running php.exe under Dos_PHP Tutorial
Move extension=php_mbstring.dll before extension=php_exif.dll in the php.ini file.
Because exif calls mbstring, mbstring must be in front.
php_exif.dll, EXIF function library, requires php_mbstring.dll.
And in php.ini, php_exif.dll must be loaded after php_mbstring.dll.
If not, check whether the default extension_dir value in php.ini is extension_dir = "./", and change this item to extension_dir = "ext/".