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HomeBackend DevelopmentPHP Tutorialwindwos下使用php连接oracle数据库的过程分享_php实例

要使用php连接oracle,基本条件是
1.需要你安装了php、
2.安装了oracle、
3.配置了tnsname.ora。
本地命令行使用sqlplus能够连接到oracle。

根据你机器的版本选对64bit或者32bit的php程序,我们使用php的oci8扩展连接oracle

安装好php后,打开oci8扩展,

写一段连接oracle的ora.php代码

复制代码 代码如下:

$conn = oci_connect('hr', 'welcome', 'MYDB');
if (!$conn) {
    $e = oci_error();
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

// Prepare the statement
$stid = oci_parse($conn, 'SELECT * FROM departments');
if (!$stid) {
    $e = oci_error($conn);
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

// Perform the logic of the query
$r = oci_execute($stid);
if (!$r) {
    $e = oci_error($stid);
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

// Fetch the results of the query
print "

\n";
while ($row = oci_fetch_array($stid, OCI_ASSOC+OCI_RETURN_NULLS)) {
    print "\n";
    foreach ($row as $item) {
        print "    \n";
    }
    print "\n";
}
print "
" . ($item !== null ? htmlentities($item, ENT_QUOTES) : " ") . "
\n";

oci_free_statement($stid);
oci_close($conn);

?>

说明:
oci_connect('hr', 'welcome', 'MYDB')
第一个参数是oracle的用户名,
第二个参数是oracle的密码
第三个参数是tnsnames.ora里的连接串名

命令行下执行

复制代码 代码如下:
php ora.php

提示如下错误

复制代码 代码如下:

PHP Warning: PHP Startup: Unable to load dynamic library 'C:\php\php_oci8.dll'- %1 不是有效的 Win32 应用程序。 in Unknown on line 0
PHP Parse error: syntax error, unexpected '"user"' (T_CONSTANT_ENCAPSED_STRING) in C:\Users\nginx\Desktop\oraclephpoci\oci.php on line 3

开始以为是没有选对版本,我是64位的机器,结果说是win32的程序,一看字面提示,我就重新安装了新的32bit程序还是报错。

仔细查了查发现在32位像64位迁移的问题,出现如下问题时,我们需要安装Oracle Instant Client。

复制代码 代码如下:

Unable to load dynamic library 'C:\Program Files (x86)\PHP\ext\php_oci8_11g.dll' - %1 is not a valid Win32 application.
Warning oci_connect(): OCIEnvNlsCreate() failed. There is something wrong with your system - please check that PATH includes the directory with Oracle Instant Client libraries

Oracle Instant Client,它是一个解压后就能使用的程序,不需要安装。
如果有oracle账号的可以去oracle下载对应的版本,(注册用户需要一堆信息)

http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html

嫌麻烦的同学使用这个地址下载

http://eduunix.ccut.edu.cn/index2/database/Oracle%20Instant%20Client/

下载后把压缩包解压到c:\oracleinstantclient,并添加路径到环境变量PATH

重新执行php ora.php,“%1 不是有效的 Win32 应用程序”的错误没有了,但是会提示

复制代码 代码如下:
syntax error, unexpected T_CONSTANT_ENCAPSED_STRING

代码是从php官网直接拷过来的,代码中有不可见的字符,使用notepad++查看所有字符,去掉乱码即可。

继续执行,这次提示,

复制代码 代码如下:

PHP Fatal error: ORA-12154: TNS:could not resolve the connect identifier specified in C:\Users\nginx\Desktop\airline\oci.php on line 6

看样子是php没有找到tnsnames.ora的位置,时间比较赶,那我就直接使用ip的形式,具体格式根据你的信息拼写oci_connect的第三个参数
oracle10格式:[//]host_name[:port][/service_name]
oracle11格式:[//]host_name[:port][/service_name][:server_type][/instance_name].
我具体使用的php oci连接串是:
复制代码 代码如下:
$conn = oci_connect('hr', 'welcome', '//www.php.net:1523/sycx');

配好上述信息后,终于能出结果了,但是发现查出来的结果中问乱码,这种问题基本都是编码不匹配。

php oci8中文乱码解决办法,先查询你的oracle的数据库编码使用,

复制代码 代码如下:
select userenv('language') from dual;

查出来的结果是SIMPLIFIED CHINESE_CHINA.ZHS16GBK,在php的代码里设置环境变量
复制代码 代码如下:
putenv("NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK");

终于php能够正确连接到oracle啦。

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