配置好php,mysql,phpmyadmin，用phpmyadmin登录数据库管理的时候，出现错误“PHP Fatal error: Call to undefined function mb_detect_encoding() in”，原因是还没有配置好php,用记事本打开php.ini,按下列代码比照着去掉前面的;即可，然后重启iis。（下列配置文件，来源于wamp，不太明白每项具体什么意思，但大体上这么配置没错）

extension=php_bz2.dll
extension=php_curl.dll
extension=php_com_dotnet.dll
extension=php_fileinfo.dll
extension=php_gd2.dll
extension=php_gettext.dll
extension=php_gmp.dll
extension=php_intl.dll
extension=php_imap.dll
;extension=php_interbase.dll
extension=php_ldap.dll
extension=php_mbstring.dll
extension=php_exif.dll      ; Must be after mbstring as it depends on it
extension=php_mysql.dll
extension=php_mysqli.dll
;extension=php_oci8.dll      ; Use with Oracle 10gR2 Instant Client
;extension=php_oci8_11g.dll  ; Use with Oracle 11gR2 Instant Client
extension=php_openssl.dll
;extension=php_pdo_firebird.dll
extension=php_pdo_mysql.dll
;extension=php_pdo_oci.dll
;extension=php_pdo_odbc.dll
;extension=php_pdo_pgsql.dll
extension=php_pdo_sqlite.dll
;extension=php_pgsql.dll
extension=php_shmop.dll

; The MIBS data available in the PHP distribution must be installed. 
; See http://www.php.net/manual/en/snmp.installation.php 
;extension=php_snmp.dll

extension=php_soap.dll
extension=php_sockets.dll
extension=php_sqlite3.dll
;extension=php_sybase_ct.dll
;extension=php_tidy.dll
extension=php_xmlrpc.dll
extension=php_xsl.dll