PHP独立编译安装扩展（mysqli,pdo-mysql）
1.环境说明：系统：CentOS 6.3 64位 Linux
PHP版本：5.3.13
Mysql版本：5.5.26
PHP安装目录：/usr/local/php
PHP配置文件：/usr/local/php/etc/php.ini
PHP扩展目录：/usr/local/php/lib/php/extensions/no-debug-non-zts-20090624/
MySQL安装目录：/usr/local/mysql
php.ini:
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; Directory in which the loadable extensions (modules) reside.
extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20090624/"
2.编译安装扩展：
PHP扩展安装pdo_mysql模块，在Linux系统下进行，按以下步骤即可完成模块安装：
# tar -zxvf php-5.3.13.tgz
# cd php-5.3.13/ext/pdo_mysql
# /usr/local/php/bin/phpize
#cp /usr/local/mysql/bin/mysql_config /usr/bin/mysql_config
# ./configure --with-php-config=/usr/local/php/bin/php-config --with-mysql-config=/usr/bin/mysql_config --with-pdo-mysql=/usr/local/mysql --enable-pdo=shared
# make && make install
备注：make test的时候会报错，但不影响编译安装的正常进行，可以忽略：
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=====================================================================
PHP : /usr/local/php/bin/php
PHP_SAPI : cli
PHP_VERSION : 5.3.13
ZEND_VERSION: 2.2.0
PHP_OS : Linux - CentOS 6.3 Linux X64
INI actual: /usr/local/php/etc/php.ini
More .INIs:
CWD : /usr/local/src/php/php-5.3.13/ext/pdo_mysql
Extra dirs:
=====================================================================
Running selected tests.
SKIP PDO MySQL Bug #33689 (query() execute() and fetch() return false on valid select queries) reason: SQLSTATE Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
SKIP PDO MySQL Bug #37445 (Premature stmt object destruction) reason: SQLSTATE Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
SKIP PDO MySQL Bug #39483 (Problem with handling of \ char in prepared statements) reason: SQLSTATE Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
SKIP PDO MySQL Bug #41698 (float parameters truncated to integer in prepared statements) reason: SQLSTATE Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
PHP Warning:opendir(ext/pdo/tests): failed to open dir: No such file or directory in /usr/local/src/php/php-5.3.13/ext/pdo_mysql/run-tests.php on line 597
ERROR: cannot open directory: ext/pdo/tests
make: Error 1 (ignored)
PHP扩展安装mysqli模块，在Linux系统下进行，按以下步骤即可完成模块安装：
# tar -zxvf php-5.3.13.tgz# cd php-5.3.13/ext/mysqli# /usr/local/php/bin/phpize# ./configure --with-php-config=/usr/local/php/bin/php-config--with-mysqli= /usr/bin/mysql_config# make && make install
配置过程报错：
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checking for mysql_set_server_option in -lmysqlclient... no
configure: error: wrong mysql library version or lib not found. Check config.log for more information.
configure: failed program was:
| /* confdefs.h.*/
|
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.*/
|
| /* Override any gcc2 internal prototype to avoid an error.*/
| #ifdef __cplusplus
| extern "C"
| #endif
| /* We use char because int might match the return type of a gcc2
| builtin and then its argument prototype would still apply.*/
| char mysql_set_server_option ();
| int
| main ()
| {
| mysql_set_server_option ();
| ;
| return 0;
| }
configure:3473: result: no
configure:3801: error: wrong mysql library version or lib not found. Check config.log for more information.
没有找到mysql库文件，说明mysql环境变量设置不正确或者mysql-devel库未安装。
yum -y install mysql-devel或 源码编译安装mysql-devel
3.修改PHP配置文件
sed -i '/pdo_mysql.so/d' /usr/local/php/etc/php.ini
sed -i '/^extension_dir/a extension = "pdo_mysql"' /usr/local/php/etc/php.ini
sed -i '/mysqli.so/d' /usr/local/php/etc/php.inised -i '/^extension_dir/a extension = "mysqli"' /usr/local/php/etc/php.ini
4.重启apache或nginx，让配置生效：
/usr/local/apache/bin/apachectl -k restart 或 /etc/init.d/httpd restart
/usr/local/nginx/sbin/nginx -s reload 或 /etc/init.d/nginx restart
备注：
在编译 php 的时候加上了 这个--with-mysqli=/usr/local/mysql/bin/mysql_config
所报错误是 configure: error: wrong mysql library version or lib not found
在编译的时候 直接 写--with-mysqli 不在添加路径，因为php本身有这个模块，不用再添加mysql 的配置文件路径。
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