


Tutorial on installing PHP MSSQL extension under Linux, linuxmssql_PHP tutorial
Tutorial on installing PHP MSSQL extension under Linux, linuxmssql
PHP naturally has good support for MySQL, but if you want to use PHP to operate SQL Server, it will take some time. Today it happened that a project in the team needed to use PHP to operate SQL Server, so I helped configure the environment.
First of all, the system version of the server is SUSE Linux Enterprise Server 10 SP3.
1. Install FreeTDS
Address: FreeTDS
wget http://ibiblio.org/pub/Linux/ALPHA/freetds/stable/freetds-stable.tgz
tar zxvf freetds-stable.tgz
cd freetds-0.82
./configure --prefix=/usr/local/freetds --with-tdsver=8.0 --enable-msdblib --enable-dbmfix
make && make install
After successful installation, it is best to update the dynamic link library cache:
echo "/usr/local/freetds/lib" >> /etc/ld.so.conf
ldconfig
2. Configure FreeTDS and connect test
The configuration file of FreeTDS is placed in etc in the installation directory. According to the configure parameters in the first step, our FreeTDS is installed in /usr/local/freetds:
vim /usr/local/freetds/etc/freetds.conf
Since I don’t know the specific configurable items of FreeTDS, I won’t go into details here, but I will provide a more important configuration to solve the problem of Chinese garbled characters. Add the following statement in the configuration file:
client charset = utf8
Then, we use the tsql command to test whether we can connect to the SQL Server database normally:
cd /usr/local/freetds/bin
./tsql -H 192.168.0.254 -p 1433 -U sa -P 123456
If the connection is normal, the following statement should be displayed:
locale is "zh_CN.UTF-8"
locale charset is "UTF-8"
1>
3. Install the mssql extension for php
The PHP version on the server is 5.3.13, PHP has been installed under /usr/local/services/php, and the extension directory is /usr/local/services/php/extensions. Here’s how to install the mssql extension:
cd php-5.3.13/ext/mssql/
/usr/local/services/php/bin/phpize
./configure --with-php-config=/usr/local/services/php/bin/php-config --with-mssql=/usr/local/freetds
make #Generate expansion files and place them in the module folder of the current directory
cp modules/mssql.so /usr/local/services/php/extensions/ #Copy the extension file to the PHP extension directory
4. Configure php.ini and verify the installation results
Open php.ini and add the following expansion statement:
extension=mssql.so
After restarting the PHP service (the server uses php-fpm), print phpinfo. If the following configuration appears, it means that PHP can operate SQL Server normally.
1. Maybe you don’t need to install it. You can solve this problem by installing unixODBC yourself.
2. Maybe there are Linux security restrictions. Change the
SELINUX=enforce
in /etc/selinux to :SELINUX=disabled
3. Maybe mssql restrictions prevent remote login
Some modules also need to recompile PHP. It’s not as simple as just modifying php.ini

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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