我必须升级使用 PHP 5.3 32 位、Apache2.2 32 位、Oracle 客户端 11.2 32 位在 Windows 64 位上运行的旧运行和功能应用程序（Win10 用于开发，服务器用于生产）。
新堆栈是 Apache2.4 32 位、PHP8 32 位和完全相同的 Oracle 客户端 11.2 32 位。
当我运行 webapp 时，我在第一次尝试连接数据库时遇到了这个错误：
Fatal error: Uncaught Error: Call to undefined function oci_connect() in c:\some\path\connexion_check.php:16 Stack trace: #0 {main} thrown in c:\some\path\connexion_check.php on line 16
我的安装是使用这些软件包完成的：
- httpd-2.4.48-win32-VS16.zip
- php-8.0.8-Win32-vs16-x86.zip
- php_oci8-3.0.1-8.0-ts-vs16-x86.zip
- php-debug-pack-8.0.8-Win32-vs16-x86.zip
在我的 PHP.ini 文件中，我设置了
extension_dir = "ext"
extension=oci8_11g
在那里，我使用与 PHP5.3 => extension=oci8_11g 相同的参数，但 DLL 使用包 php_oci8-3.0.1-8.0-ts-vs16-x86.zip 进行了更新
运行命令php --ri oci8说
oci8
OCI8 Support => enabled
OCI8 DTrace Support => disabled
OCI8 Version => 3.0.1
Oracle Run-time Client Library Version => 11.2.0.3.0
Oracle Compile-time Instant Client Version => 11.2
Directive => Local Value => Master Value
oci8.max_persistent => -1 => -1
oci8.persistent_timeout => -1 => -1
oci8.ping_interval => 60 => 60
oci8.privileged_connect => Off => Off
oci8.statement_cache_size => 20 => 20
oci8.default_prefetch => 100 => 100
oci8.old_oci_close_semantics => Off => Off
oci8.connection_class => no value => no value
oci8.events => Off => Off
Statistics =>
Active Persistent Connections => 0
Active Connections => 0
一些 PHPINFO（来自 CLI）
phpinfo()
PHP Version => 8.0.8
System => Windows NT D20899 10.0 build 19042 (Windows 10) i586
Build Date => Jun 29 2021 15:54:30
Build System => Microsoft Windows Server 2019 Datacenter [10.0.17763]
Compiler => Visual C++ 2019
Architecture => x86
Configure Command => cscript /nologo /e:jscript configure.js "--enable-snapshot-build" "--enable-debug-pack" "--with-pdo-oci=..\..\..\..\instantclient\sdk,shared" "--with-oci8-19=..\..\..\..\instantclient\sdk,shared" "--enable-object-out-dir=../obj/" "--enable-com-dotnet=shared" "--without-analyzer" "--with-pgo"
Server API => Command Line Interface
Virtual Directory Support => enabled
Configuration File (php.ini) Path =>
Loaded Configuration File => C:\www\php8\php.ini
Scan this dir for additional .ini files => (none)
Additional .ini files parsed => (none)
PHP API => 20200930
PHP Extension => 20200930
Zend Extension => 420200930
Zend Extension Build => API420200930,TS,VS16
PHP Extension Build => API20200930,TS,VS16
Debug Build => no
Thread Safety => enabled
Thread API => Windows Threads
Zend Signal Handling => disabled
Zend Memory Manager => enabled
Zend Multibyte Support => disabled
IPv6 Support => enabled
DTrace Support => disabled
Registered PHP Streams => php, file, glob, data, http, ftp, zip, compress.zlib, compress.bzip2, https, ftps, phar
Registered Stream Socket Transports => tcp, udp, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2, tlsv1.3
Registered Stream Filters => convert.iconv.*, string.rot13, string.toupper, string.tolower, convert.*, consumed, dechunk, zlib.*, bzip2.*
This program makes use of the Zend Scripting Language Engine:
Zend Engine v4.0.8, Copyright (c) Zend Technologies
with Xdebug v3.0.4, Copyright (c) 2002-2021, by Derick Rethans
除了这个 webapp，我还使用相同的 InstantClient 安装管理/使用连接到我的 Oracle DB 的其他应用程序/工具。从这台计算机可以使用以下数据库连接：
- 甲骨文工具
- Powerbuilder 32位
- Python 32 位 + cx_Oracle
- Microsoft Word 通过 Oracle Data Provider for .NET 和 OLEDB
我检查了很多东西，但无法弄清楚出了什么问题。谢谢你的帮助 ：-）
编辑：
C:\www\php8>php -m
[PHP Modules]
bcmath
bz2
calendar
Core
ctype
curl
date
dom
filter
hash
iconv
json
libxml
mysqlnd
oci8
openssl
pcre
PDO
Phar
readline
Reflection
session
SimpleXML
SPL
standard
tokenizer
xdebug
xml
xmlreader
xmlwriter
zip
zlib
[Zend Modules]
Xdebug