以下安裝mongo-php-driver 也許會遇到

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mongodb.so' - /usr/lib64/php/modules/mongodb.so: undefined symbol: bson_decimal128_from_string in Unknown on line 0

問題。

[[email protected] mongo-php-driver]# git clone https://github.com/mongodb/mongo-php-driver          

Initialized empty Git repository in /home/.../mongo-php-driver/.git/

remote: Counting objects: 9821, done.

remote: Compressing objects: 100% (10/10), done.

remote: Total 9821 (delta 2), reused 0 (delta 0), pack-reused 9811

Receiving objects: 100% (9821/9821), 3.25 MiB | 642 KiB/s, done.

Resolving deltas: 100% (6883/6883), done.

[[email protected] mongo-php-driver]# cd mongo-php-driver

[[email protected] mongo-php-driver]# phpize

遇到如下問題：

Configuring for:

PHP Api Version:         20131106

Zend Module Api No:      20131226

Zend Extension Api No:   220131226

/usr/bin/m4:config.m4:482: cannot open `src/libmongoc/build/autotools/WeakSymbols.m4': No such file or directory

/usr/bin/m4:config.m4:483: cannot open `src/libmongoc/build/autotools/m4/ax_pthread.m4': No such file or directory

/usr/bin/m4:config.m4:517: cannot open `src/libbson/build/autotools/CheckAtomics.m4': No such file or directory

/usr/bin/m4:config.m4:518: cannot open `src/libbson/build/autotools/FindDependencies.m4': No such file or directory

/usr/bin/m4:config.m4:519: cannot open `src/libbson/build/autotools/m4/ac_compile_check_sizeof.m4': No such file or directory

/usr/bin/m4:config.m4:520: cannot open `src/libbson/build/autotools/m4/ac_create_stdint_h.m4': No such file or directory

/usr/bin/m4:config.m4:565: cannot open `src/libmongoc/build/autotools/Versions.m4': No such file or directory

/usr/bin/m4:config.m4:579: cannot open `src/libbson/build/autotools/Versions.m4': No such file or directory

autom4te: /usr/bin/m4 failed with exit status: 1

解決問題使用如下：

[[email protected] mongo-php-driver]# git submodule update --init

引數 init前面是 ‘--’，兩個半形減號，坑死自己了

Submodule 'src/libbson' (https://github.com/mongodb/libbson.git) registered for path 'src/libbson'

Submodule 'src/libmongoc' (https://github.com/mongodb/mongo-c-driver.git) registered for path 'src/libmongoc'

Initialized empty Git repository in /home/.../mongo-php-driver/src/libbson/.git/

remote: Counting objects: 9019, done.

remote: Compressing objects: 100% (4/4), done.

remote: Total 9019 (delta 0), reused 0 (delta 0), pack-reused 9015

Receiving objects: 100% (9019/9019), 6.32 MiB | 60 KiB/s, done.

Resolving deltas: 100% (6258/6258), done.

Submodule path 'src/libbson': checked out '82b3cb4d89fdb590cdda4d2bb591d0062ccc765e'

Initialized empty Git repository in /home/.../mongo-php-driver/src/libmongoc/.git/

remote: Counting objects: 26396, done.

remote: Compressing objects: 100% (147/147), done.

remote: Total 26396 (delta 79), reused 0 (delta 0), pack-reused 26249

Receiving objects: 100% (26396/26396), 14.34 MiB | 2.23 MiB/s, done.

Resolving deltas: 100% (19745/19745), done.

Submodule path 'src/libmongoc': checked out ‘62e680aa26754ef8dbdb2709aac4d2488507872a'

[[email protected] mongo-php-driver]# phpize

Configuring for:

PHP Api Version:         20131106

Zend Module Api No:      20131226

Zend Extension Api No:   220131226

[[email protected] mongo-php-driver]# ./configure

checking for grep that handles long lines and -e... /bin/grep

checking for egrep... /bin/grep -E

checking for a sed that does not truncate output... /bin/sed

..........

checking whether to build shared libraries... yes

checking whether to build static libraries... no

configure: creating ./config.status

mongodb was configured with the following options:

Build configuration:

  CFLAGS                                           : -g -O2

  Extra CFLAGS                                     :  -pthread 

  Developers flags (slow)                          : 

  Code Coverage flags (extra slow)                 : 

  System mongoc                                    : no

  System libbson                                   : no

  LDFLAGS                                          : 

  EXTRA_LDFLAGS                                    : 

  MONGODB_SHARED_LIBADD                            :  -lssl -lcrypto -lrt  

Please submit bugreports at:

  https://jira.mongodb.org/browse/PHPC

config.status: creating ./src/libmongoc/src/mongoc/mongoc-config.h

config.status: creating ./src/libmongoc/src/mongoc/mongoc-version.h

config.status: creating ./src/libbson/src/bson/bson-config.h

config.status: creating ./src/libbson/src/bson/bson-version.h

config.status: creating config.h

config.status: executing libtool commands

[[email protected] mongo-php-driver]# make

……

/bin/sh /home/markboo/mongo-php-driver/libtool --mode=install cp ./mongodb.la /home/.../mongo-php-driver/modules

libtool: install: cp ./.libs/mongodb.so /home/.../mongo-php-driver/modules/mongodb.so

libtool: install: cp ./.libs/mongodb.lai /home/.../mongo-php-driver/modules/mongodb.la

libtool: finish: PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/sbin" ldconfig -n /home/.../mongo-php-driver/modules

----------------------------------------------------------------------

Libraries have been installed in:

   /home/.../mongo-php-driver/modules

If you ever happen to want to link against installed libraries

in a given directory, LIBDIR, you must either use libtool, and

specify the full pathname of the library, or use the `-LLIBDIR'

flag during linking and do at least one of the following:

   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable

     during execution

   - add LIBDIR to the `LD_RUN_PATH' environment variable

     during linking

   - use the `-Wl,-rpath -Wl,LIBDIR' linker flag

   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for

more information, such as the ld(1) and ld.so(8) manual pages.

----------------------------------------------------------------------

Build complete.

Don't forget to run 'make test’.

[[email protected] mongo-php-driver]# make install

Installing shared extensions:     /usr/lib64/php/modules/

[[email protected] mongo-php-driver]# echo "extension=mongodb.so" > /etc/php.d/mongo.ini

[[email protected] mongo-php-driver]# cat /etc/php.d/mongo.ini 

extension=mongodb.so

apache error_log裡出現：

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mongodb.so' - /usr/lib64/php/modules/mongodb.so: undefined symbol: bson_decimal128_from_string in Unknown on line 0

這個c-driver的問題，mongo也還沒暫時沒有解決，連結如下：https://jira.mongodb.org/browse/CDRIVER-1173

描述如下：

Since bson_decimal128_from_string () requires a null terminated string, the BSON to JSON conversion for bson_decimal128_t allocates a new string+1 since the input isn't null terminated.

We should be able to avoid that extra malloc, either though stack allocation or passing the length to the bson_decimal128_from_string () function.

---------------------------------------------------------------------------------------

所以變更驅動，使用PECL驅動

# wget https://pecl.php.net/get/mongo-1.6.13.tgz

# tar zxvf mongo-1.6.13.tgz

# cd mongo-1.6.13

# phpize

# make

# make install

# echo "extension=mongo.so" > /etc/php.d/mongo.ini

# wget https://pecl.php.net/get/mongodb-1.1.6.tgz

# tar -xzf mongodb-1.1.6.tgz

# cd mongodb-1.1.6

# phpize

# make

# make install

# echo "extension=mongo.1.1.6.so" > /etc/php.d/mongodb.ini

# httpd -k restart

# php -i 

mongo

MongoDB Support => enabled

Version => 1.6.13

Streams Support => enabled

SSL Support => enabled

                   Supported Authentication Mechanisms                   

MONGODB-CR => enabled

SCRAM-SHA-1 => enabled

MONGODB-X509 => enabled

GSSAPI (Kerberos) => disabled

PLAIN => disabled

Directive => Local Value => Master Value

mongo.allow_empty_keys => 0 => 0

mongo.chunk_size => 261120 => 261120

mongo.cmd => $ => $

mongo.default_host => localhost => localhost

mongo.default_port => 27017 => 27017

mongo.is_master_interval => 15 => 15

mongo.long_as_object => 0 => 0

mongo.native_long => 1 => 1

mongo.ping_interval => 5 => 5

mongodb

mongodb support => enabled

mongodb version => 1.1.6

mongodb stability => stable

libmongoc version => 1.3.5

libbson version => 1.3.5

Directive => Local Value => Master Value

mongodb.debug => no value => no value

後一種沒有報錯誤，程式執行也沒有問題！