Linux+Apache 2.4+PHP 5.4+达梦数据库
2021/8/3 2:05:53
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环境说明
操作系统:Centos 7
Apache:2.4.6
PHP:5.4.16
达梦数据库:DM V8 1-2-38
php7版本连接达梦数据库参考:
PHP | 达梦技术社区文档 (eco.dameng.com)
达梦E学公众号:php7.4连接DM数据库环境搭建
环境安装
Apache和PHP可以采用源码安装,也可以使用yum直接安装。这里使用yum直接安装。
防火墙和SELINUX,可以提前放开相应策略或者关闭。
配置本地yum源
备份移除所有自带的repo文件,创建本地yum仓库文件
/etc/yum.repos.d/cdrom.repo
[Centos7.8] name= Centos 7.8 baseurl=file:///cdrom enabled=1 gpgcheck=0
安装Apache环境
yum install -y httpd
[root@localhost ~]# yum install -y httpd Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile Centos7.8 | 3.6 kB 00:00:00 Resolving Dependencies --> Running transaction check ---> Package httpd.x86_64 0:2.4.6-93.el7.centos will be installed --> Processing Dependency: httpd-tools = 2.4.6-93.el7.centos for package: httpd-2.4.6-93.el7.centos.x86_64 --> Processing Dependency: /etc/mime.types for package: httpd-2.4.6-93.el7.centos.x86_64 --> Processing Dependency: libaprutil-1.so.0()(64bit) for package: httpd-2.4.6-93.el7.centos.x86_64 --> Processing Dependency: libapr-1.so.0()(64bit) for package: httpd-2.4.6-93.el7.centos.x86_64 --> Running transaction check ---> Package apr.x86_64 0:1.4.8-5.el7 will be installed ---> Package apr-util.x86_64 0:1.5.2-6.el7 will be installed ---> Package httpd-tools.x86_64 0:2.4.6-93.el7.centos will be installed ---> Package mailcap.noarch 0:2.1.41-2.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ========================================================================================================= Package Arch Version Repository Size ========================================================================================================= Installing: httpd x86_64 2.4.6-93.el7.centos Centos7.8 2.7 M Installing for dependencies: apr x86_64 1.4.8-5.el7 Centos7.8 103 k apr-util x86_64 1.5.2-6.el7 Centos7.8 92 k httpd-tools x86_64 2.4.6-93.el7.centos Centos7.8 92 k mailcap noarch 2.1.41-2.el7 Centos7.8 31 k Transaction Summary ========================================================================================================= Install 1 Package (+4 Dependent packages) Total download size: 3.0 M Installed size: 10 M Downloading packages: --------------------------------------------------------------------------------------------------------- Total 10 MB/s | 3.0 MB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : apr-1.4.8-5.el7.x86_64 1/5 Installing : apr-util-1.5.2-6.el7.x86_64 2/5 Installing : httpd-tools-2.4.6-93.el7.centos.x86_64 3/5 Installing : mailcap-2.1.41-2.el7.noarch 4/5 Installing : httpd-2.4.6-93.el7.centos.x86_64 5/5 Verifying : apr-1.4.8-5.el7.x86_64 1/5 Verifying : httpd-tools-2.4.6-93.el7.centos.x86_64 2/5 Verifying : mailcap-2.1.41-2.el7.noarch 3/5 Verifying : httpd-2.4.6-93.el7.centos.x86_64 4/5 Verifying : apr-util-1.5.2-6.el7.x86_64 5/5 Installed: httpd.x86_64 0:2.4.6-93.el7.centos Dependency Installed: apr.x86_64 0:1.4.8-5.el7 apr-util.x86_64 0:1.5.2-6.el7 httpd-tools.x86_64 0:2.4.6-93.el7.centos mailcap.noarch 0:2.1.41-2.el7 Complete!
[root@localhost ~]# httpd -v Server version: Apache/2.4.6 (CentOS) Server built: Apr 2 2020 13:13:23
[root@localhost ~]# systemctl start httpd
安装PHP
Centos 7 中自带的PHP版本为5.4(Centos 8中自带的PHP版本为7.2)
安装php和php-pdo
php -v
php -m
[root@localhost yum.repos.d]# yum install -y php php-pdo Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package php.x86_64 0:5.4.16-48.el7 will be installed --> Processing Dependency: php-common(x86-64) = 5.4.16-48.el7 for package: php-5.4.16-48.el7.x86_64 --> Processing Dependency: php-cli(x86-64) = 5.4.16-48.el7 for package: php-5.4.16-48.el7.x86_64 ---> Package php-pdo.x86_64 0:5.4.16-48.el7 will be installed --> Running transaction check ---> Package php-cli.x86_64 0:5.4.16-48.el7 will be installed ---> Package php-common.x86_64 0:5.4.16-48.el7 will be installed --> Processing Dependency: libzip.so.2()(64bit) for package: php-common-5.4.16-48.el7.x86_64 --> Running transaction check ---> Package libzip.x86_64 0:0.10.1-8.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================== Package Arch Version Repository Size ============================================================================================== Installing: php x86_64 5.4.16-48.el7 Centos7.8 1.4 M php-pdo x86_64 5.4.16-48.el7 Centos7.8 99 k Installing for dependencies: libzip x86_64 0.10.1-8.el7 Centos7.8 48 k php-cli x86_64 5.4.16-48.el7 Centos7.8 2.7 M php-common x86_64 5.4.16-48.el7 Centos7.8 565 k Transaction Summary ============================================================================================== Install 2 Packages (+3 Dependent packages) Total download size: 4.8 M Installed size: 17 M Downloading packages: ---------------------------------------------------------------------------------------------- Total 55 MB/s | 4.8 MB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : libzip-0.10.1-8.el7.x86_64 1/5 Installing : php-common-5.4.16-48.el7.x86_64 2/5 Installing : php-cli-5.4.16-48.el7.x86_64 3/5 Installing : php-5.4.16-48.el7.x86_64 4/5 Installing : php-pdo-5.4.16-48.el7.x86_64 5/5 Verifying : php-5.4.16-48.el7.x86_64 1/5 Verifying : php-pdo-5.4.16-48.el7.x86_64 2/5 Verifying : libzip-0.10.1-8.el7.x86_64 3/5 Verifying : php-cli-5.4.16-48.el7.x86_64 4/5 Verifying : php-common-5.4.16-48.el7.x86_64 5/5 Installed: php.x86_64 0:5.4.16-48.el7 php-pdo.x86_64 0:5.4.16-48.el7 Dependency Installed: libzip.x86_64 0:0.10.1-8.el7 php-cli.x86_64 0:5.4.16-48.el7 php-common.x86_64 0:5.4.16-48.el7 Complete!
[root@localhost ~]# php -v PHP 5.4.16 (cli) (built: Apr 1 2020 04:07:17) Copyright (c) 1997-2013 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies [root@localhost lib64]# php -m [PHP Modules] bz2 calendar Core ctype curl date dm ereg exif fileinfo filter ftp gettext gmp hash iconv json libxml mhash openssl pcntl pcre PDO pdo_sqlite Phar readline Reflection session shmop SimpleXML sockets SPL sqlite3 standard tokenizer xml zip zlib [Zend Modules]
Apache和PHP安装完成后,需要检查Apache配置文件是否已加载php库文件,默认是已自动配置加载。
测试PHP环境
创建php测试页面:
[root@localhost ~]# echo "<?php phpinfo();?>" >/var/www/html/index.php
测试:IP/index.php
安装达梦数据库软件
参考:达梦技术社区:Linux 达梦数据库安装
只需要安装软件,或者将已安装达梦数据库软件的bin目录拷贝到服务器上。
使用达梦php驱动时需要应用相关依赖库。
配置PHP加载达梦驱动
(1)首先拷贝达梦数据库PHP接口驱动文件到php服务器上,达梦数据库PHP驱动存放在数据库安装目录下drivers/php_pdo目录下
需要注意,如果PHP版本是TS版,需要选择对应的TS版本的达梦数据库dm php和dm pdo驱动库文件。拷贝对应驱动文件到php默认的扩展模块路径下。
使用yum安装的自带的PHP,默认扩展模块的路径为/usr/lib64/php/modules,可以将对应版本的驱动文件拷贝到/usr/lib64/php/modules下。也可以在php.ini中指定扩展模块的路径。
默认扩展模块路径查看: php -i|grep -i extension_dir
(2)修改PHP配置文件php.ini,添加达梦数据库模块库文件
方式1:
php.ini文件中添加:
extension=libphp54_dm.so
/etc/php.d/pdo.ini文件中添加:
extension=php54_pdo_dm.so ##不要添加在最上面
方式2:
在/etc/php.d目录下,创建两个达梦驱动配置文件dm8.ini和pdo_dm8.ini,分别配置达梦php驱动扩展和pdo驱动扩展。
[root@localhost php.d]# pwd /etc/php.d [root@localhost php.d]# cat dm8.ini extension=libphp54_dm.so [root@localhost php.d]# cat pdo_dm8.ini extension=php54_pdo_dm.so
(3)配置LD_LIBRARY_PATH环境变量
##临时生效: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/dmdbms/bin ##永久生效,添加到/etc/profile配置文件中
(4)检查dm扩展模块
方法1:通过php -m命令查看
方法2:重启httpd服务,然后通过前面的index.php测试页面查看
测试连接达梦数据库
新建一个测试php页面:
[root@localhost html]# pwd /var/www/html [root@localhost html]# cat test.php <?php try { $link = dm_connect("192.168.15.35", "SYSDBA", "SYSDBA") or die("Could not connect : " . dm_error()); print "Connected successfully!数据库版本为\n"; $query = "select *,id_code from v\$version where rownum=1;"; $result = dm_query($query) or die("Query failed : " . dm_error()); while ($line = dm_fetch_array($result, DM_ASSOC)) { foreach ($line as $col_value) { print_r ($col_value); } } dm_free_result($result); dm_close($link); } catch(PDOException $e){ print( "Error: " . $e->getMessage())."\n"; } ?>
通过访问IP/test.php,测试是否连接数据库成功
问题处理
报错1 PHP Startup: Unable to load dynamic library
pdo模块加载失败
[root@localhost ~]# php -v PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/php54_pdo_dm.so' - /usr/lib64/php/modules/php54_pdo_dm.so: undefined symbol: php_pdo_register_driver in Unknown on line 0 PHP 5.4.16 (cli) (built: Apr 1 2020 04:07:17)
处理办法:
方法1:在php 5.4版本中,pdo扩展配置文件在/etc/php.d/pdo.ini,将dm php pdo驱动添加到pdo.ini文件中
[root@localhost php.d]# cat pdo.ini ; Enable pdo extension module extension=pdo.so extension=php54_pdo_dm.so ##注意extension=pdo.so要放到最上面
方法2:在/etc/php.d目录下,创建两个达梦驱动配置文件dm8.ini和pdo_dm8.ini,分别配置达梦php驱动扩展和pdo驱动扩展。
[root@localhost php.d]# cat pdo_dm8.ini extension=php54_pdo_dm.so
报错2 PHP Fatal error:Unable to start dm module
[root@localhost php.d]# php -m PHP Fatal error: Unable to start PDO_DM module in Unknown on line 0 或者 [root@localhost lib64]# php -m PHP Fatal error: Unable to start dm module in Unknown on line 0
处理办法:
方法1:LD_LIBRARY_PATH环境变量,指定为达梦数据库软件安装目录下的bin目录
##临时生效: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/dmdbms/bin ##永久生效,添加到/etc/profile配置文件中
方法2:见报错3的处理办法。
报错3 PHP正常,httpd服务启动报错
某些环境下(php 5.*)php -m可以看到已正常加载dm和PDO_DM扩展模块,但是重启httpd服务时报错,httpd的error_log中报错信息如下:
[root@localhost bin]# systemctl start httpd Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and "journalctl -xe" for details. ###httpd error_log报错信息: PHP Fatal error: Unable to start dm module in Unknown on line 0
这个很奇怪,因为单独使用php查看相关扩展模块的情况都是成功的,而且使用php测试连接数据库也是正常的,但是启动httpd服务就会报错。
初步判断可能是httpd服务启动时用户环境变量加载动态链接库出现问题。
处理办法:
(1)在/etc/ld.so.conf.d目录下创建dm8.conf配置文件:
[root@localhost ld.so.conf.d]# cat dm8.conf /opt/dmdbms/bin
(2)root执行ldconfig命令生效
[root@localhost ld.so.conf.d]# ldconfig ldconfig: /opt/dmdbms/bin/libxerces-c-3.1.so is not a symbolic link ##这个报错可以忽略
(3)然后启动httpd服务
[root@localhost ld.so.conf.d]# systemctl restart httpd [root@localhost ld.so.conf.d]# netstat -ntlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1180/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1186/cupsd tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1437/master tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 3614/sshd: root@pts tcp 0 0 127.0.0.1:6011 0.0.0.0:* LISTEN 3916/sshd: root@pts tcp 0 0 127.0.0.1:6012 0.0.0.0:* LISTEN 4809/sshd: root@pts tcp 0 0 127.0.0.1:6013 0.0.0.0:* LISTEN 4954/sshd: root@pts tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 700/rpcbind tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 1433/dnsmasq tcp6 0 0 :::22 :::* LISTEN 1180/sshd tcp6 0 0 ::1:631 :::* LISTEN 1186/cupsd tcp6 0 0 ::1:25 :::* LISTEN 1437/master tcp6 0 0 ::1:6010 :::* LISTEN 3614/sshd: root@pts tcp6 0 0 ::1:6011 :::* LISTEN 3916/sshd: root@pts tcp6 0 0 ::1:6012 :::* LISTEN 4809/sshd: root@pts tcp6 0 0 ::1:6013 :::* LISTEN 4954/sshd: root@pts tcp6 0 0 :::111 :::* LISTEN 700/rpcbind tcp6 0 0 :::80 :::* LISTEN 53798/httpd ---->已启动
报错4 页面访问报错 Create SOCKET connection failure
页面访问报错:
Error: SQLSTATE[HY000] dpi_login: -70028 Create SOCKET connection failure
处理办法:
分析日志可以发现系统开启了selinux策略,关闭selinux即可。
(1)修改/etc/selinux/config ,将SELINUX设置为disabled,重启生效。
SELINUX=disabled
(2)执行setenforce 0 设置为Permissive模式
[root@localhost ~]# setenforce 0 [root@localhost ~]# getenforce Permissive
更多资讯请上达梦技术社区了解:https://eco.dameng.com
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