Php configuration file mysql

Php configuration file mysql

This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide. Alternatives to this function include:

For compiling, simply use the —with-mysql[=DIR] configuration option where the optional [DIR] points to the MySQL installation directory.

Although this MySQL extension is compatible with MySQL 4.1.0 and greater, it doesn’t support the extra functionality that these versions provide. For that, use the MySQLi extension.

If you would like to install the mysql extension along with the mysqli extension you have to use the same client library to avoid any conflicts.

Installation on Linux Systems

Note: [DIR] is the path to the MySQL client library files (headers and libraries), which can be downloaded from » MySQL.

ext/mysql compile time support matrix

PHP Version	Default	Configure Options: mysqlnd	Configure Options: libmysqlclient	Changelog
4.x.x	libmysqlclient	Not Available	—without-mysql to disable	MySQL enabled by default, MySQL client libraries are bundled
5.0.x, 5.1.x, 5.2.x	libmysqlclient	Not Available	—with-mysql=[DIR]	MySQL is no longer enabled by default, and the MySQL client libraries are no longer bundled
5.3.x	libmysqlclient	—with-mysql=mysqlnd	—with-mysql=[DIR]	mysqlnd is now available
5.4.x	mysqlnd	—with-mysql	—with-mysql=[DIR]	mysqlnd is now the default

Installation on Windows Systems

PHP 5.0.x, 5.1.x, 5.2.x

MySQL is no longer enabled by default, so the php_mysql.dll DLL must be enabled inside of php.ini . Also, PHP needs access to the MySQL client library. A file named libmysql.dll is included in the Windows PHP distribution and in order for PHP to talk to MySQL this file needs to be available to the Windows systems PATH . See the FAQ titled «How do I add my PHP directory to the PATH on Windows» for information on how to do this. Although copying libmysql.dll to the Windows system directory also works (because the system directory is by default in the system’s PATH ), it’s not recommended.

As with enabling any PHP extension (such as php_mysql.dll ), the PHP directive extension_dir should be set to the directory where the PHP extensions are located. See also the Manual Windows Installation Instructions. An example extension_dir value for PHP 5 is c:\php\ext

Note:

If when starting the web server an error similar to the following occurs: «Unable to load dynamic library ‘./php_mysql.dll'» , this is because php_mysql.dll and/or libmysql.dll cannot be found by the system.

PHP 5.3.0+

The MySQL Native Driver is enabled by default. Include php_mysql.dll , but libmysql.dll is no longer required or used.

MySQL Installation Notes

Crashes and startup problems of PHP may be encountered when loading this extension in conjunction with the recode extension. See the recode extension for more information.

Note:

If you need charsets other than latin (default), you have to install external (not bundled) libmysqlclient with compiled charset support.

Источник

Php configuration file mysql

The behaviour of these functions is affected by settings in php.ini .

MySQLi Configuration Options

Name	Default	Changeable	Changelog
mysqli.allow_local_infile	«0»	PHP_INI_SYSTEM	Before PHP 7.2.16 and 7.3.3 the default was «1».
mysqli.local_infile_directory	PHP_INI_SYSTEM	Available as of PHP 8.1.0.
mysqli.allow_persistent	«1»	PHP_INI_SYSTEM
mysqli.max_persistent	«-1»	PHP_INI_SYSTEM
mysqli.max_links	«-1»	PHP_INI_SYSTEM
mysqli.default_port	«3306»	PHP_INI_ALL
mysqli.default_socket	NULL	PHP_INI_ALL
mysqli.default_host	NULL	PHP_INI_ALL
mysqli.default_user	NULL	PHP_INI_ALL
mysqli.default_pw	NULL	PHP_INI_ALL
mysqli.reconnect	«0»	PHP_INI_SYSTEM	Removed as of PHP 8.2.0
mysqli.rollback_on_cached_plink	«0»	PHP_INI_SYSTEM

For further details and definitions of the preceding PHP_INI_* constants, see the chapter on configuration changes.

Here’s a short explanation of the configuration directives.

Allow accessing, from PHP’s perspective, local files with LOAD DATA statements

Allows restricting LOCAL DATA loading to files located in this designated directory.

Enable the ability to create persistent connections using mysqli_connect() .

Maximum of persistent connections that can be made. Set to 0 for unlimited.

The maximum number of MySQL connections per process.

The default TCP port number to use when connecting to the database server if no other port is specified. If no default is specified, the port will be obtained from the MYSQL_TCP_PORT environment variable, the mysql-tcp entry in /etc/services or the compile-time MYSQL_PORT constant, in that order. Win32 will only use the MYSQL_PORT constant.

The default socket name to use when connecting to a local database server if no other socket name is specified.

The default server host to use when connecting to the database server if no other host is specified.

The default user name to use when connecting to the database server if no other name is specified.

The default password to use when connecting to the database server if no other password is specified.

Automatically reconnect if the connection was lost.

Note: This php.ini setting had been ignored by the mysqlnd driver, and was removed as of PHP 8.2.0.

If this option is enabled, closing a persistent connection will rollback any pending transactions of this connection before it is put back into the persistent connection pool. Otherwise, pending transactions will be rolled back only when the connection is reused, or when it is actually closed.

Users cannot set MYSQL_OPT_READ_TIMEOUT through an API call or runtime configuration setting. Note that if it were possible there would be differences between how libmysqlclient and streams would interpret the value of MYSQL_OPT_READ_TIMEOUT .

Источник

PHP & MySQL — Environment Setup

In order to develop and run PHP Web pages, three vital components need to be installed on your computer system.

• Web Server − PHP works with virtually all Web Server software, including Microsoft’s Internet Information Server (IIS) but most often used is Apache Server. Download Apache for free here − https://httpd.apache.org/download.cgi
• Database − PHP works with virtually all database software, including Oracle and Sybase but most commonly used is MySQL database. Download MySQL for free here − https://www.mysql.com/downloads/
• PHP Parser − In order to process PHP script instructions, a parser must be installed to generate HTML output that can be sent to the Web Browser. This tutorial will guide you how to install PHP parser on your computer.

PHP Parser Installation

Before you proceed, it is important to make sure that you have proper environment setup on your machine to develop your web programs using PHP. Store the following php file in Apache’s htdocs folder.

phpinfo.php

Type the following address into your browser’s address box.

If this displays a page showing your PHP installation related information, then it means you have PHP and Webserver installed properly. Otherwise, you have to follow the given procedure to install PHP on your computer.

This section will guide you to install and configure PHP over the following four platforms −

Apache Configuration

If you are using Apache as a Web Server, then this section will guide you to edit Apache Configuration Files.

PHP.INI File Configuration

The PHP configuration file, php.ini, is the final and immediate way to affect PHP’s functionality.

Windows IIS Configuration

To configure IIS on your Windows machine, you can refer your IIS Reference Manual shipped along with IIS.

Install MySQL Database

The most important thing you will need, of course is an actual running database with a table that you can query and modify.

• MySQL DB − MySQL is an open source database. You can download it from MySQL Official Site. We recommend downloading the full Windows installation.
• In addition, download and install MySQL Administrator as well as MySQL Query Browser. These are GUI based tools that will make your development much easier.
• Finally, download and unzip MySQL Connector/J (the MySQL JDBC driver) in a convenient directory. For the purpose of this tutorial we will assume that you have installed the driver at C:\Program Files\MySQL\mysql-connector-java-5.1.8.
• Accordingly, set CLASSPATH variable to C:\Program Files\MySQL\mysql-connector-java-5.1.8\mysql-connector-java-5.1.8-bin.jar. Your driver version may vary based on your installation.

Set Database Credential

When we install MySQL database, its administrator ID is set to root and it gives provision to set a password of your choice.

Using root ID and password you can either create another user ID and password, or you can use root ID and password for your JDBC application.

There are various database operations like database creation and deletion, which would need administrator ID and password.

For rest of the JDBC tutorial, we would use MySQL Database with guest as ID and guest123 as password.

If you do not have sufficient privilege to create new users, then you can ask your Database Administrator (DBA) to create a user ID and password for you.

Create Database

To create the TUTORIALSPOINT database, use the following steps −

Step 1

Open a Command Prompt and change to the installation directory as follows −

C:\> C:\>cd Program Files\MySQL\bin C:\Program Files\MySQL\bin>

Note − The path to mysqld.exe may vary depending on the install location of MySQL on your system. You can also check documentation on how to start and stop your database server.

Step 2

Start the database server by executing the following command, if it is already not running.

C:\Program Files\MySQL\bin>mysqld C:\Program Files\MySQL\bin>

Step 3

Create the TUTORIALSPOINT database by executing the following command −

C:\Program Files\MySQL\bin> mysqladmin create TUTORIALSPOINT -u guest -p Enter password: ******** C:\Program Files\MySQL\bin>

Create Table

To create the Employees table in TUTORIALSPOINT database, use the following steps −

Step 1

Open a Command Prompt and change to the installation directory as follows −

C:\> C:\>cd Program Files\MySQL\bin C:\Program Files\MySQL\bin>

Step 2

Login to the database as follows −

C:\Program Files\MySQL\bin>mysql -u guest -p Enter password: ******** mysql>

Step 3

Create the table Employees as follows −

mysql> use TUTORIALSPOINT; mysql> create table Employees -> ( -> id int not null, -> age int not null, -> first varchar (255), -> last varchar (255) -> ); Query OK, 0 rows affected (0.08 sec) mysql>

Create Data Records

Finally you create few records in Employee table as follows −

mysql> INSERT INTO Employees VALUES (100, 18, 'Zara', 'Ali'); Query OK, 1 row affected (0.05 sec) mysql> INSERT INTO Employees VALUES (101, 25, 'Mahnaz', 'Fatma'); Query OK, 1 row affected (0.00 sec) mysql> INSERT INTO Employees VALUES (102, 30, 'Zaid', 'Khan'); Query OK, 1 row affected (0.00 sec) mysql> INSERT INTO Employees VALUES (103, 28, 'Sumit', 'Mittal'); Query OK, 1 row affected (0.00 sec) mysql>

For a complete understanding on MySQL database, study the MySQL Tutorial.

Now you are ready to start experimenting with PHP.

Источник