How to improve MySQL performance with PHP extensions

In Web development, MySQL database is a widely used relational database. As website traffic increases and data scale expands, MySQL's performance problems will become more obvious. To solve this problem, developers need to improve MySQL performance through different ways. In this article, we will cover how to improve MySQL performance through PHP extensions, making your web application respond to user requests faster.

1. What is a PHP extension

Before introducing how to use PHP extensions to improve MySQL performance, we need to understand what a PHP extension is. A PHP extension is a shared library written in PHP that provides some enhanced functionality and higher performance to PHP.

PHP extensions are available on both Linux and Windows platforms, and extensions can be written using PHP's internal API. PHP extensions improve program performance and extended functions to meet different application scenarios.

2. Advantages of PHP extensions

The main advantages of using PHP extensions to improve MySQL performance are the following:

(1) PHP extension development is simple Convenient and able to meet different needs;

(2) PHP extensions are closely integrated with the PHP language, and developers can use PHP extensions more conveniently;

(3) PHP extensions can improve Web applications program performance, and can write code that interacts with the MySQL database through PHP extensions.

3. How to improve MySQL performance through PHP extensions

Before using PHP extensions to improve MySQL performance, we need to understand some common causes of MySQL performance problems, including:

(1) The MySQL query statement is not optimized enough, resulting in too long query time;

(2) The MySQL table structure design is unreasonable, resulting in low query efficiency;

(3 ) MySQL cache settings are unreasonable, resulting in cache failure and longer query time;

(4) Too many MySQL database connections, resulting in an excessive increase in the number of MySQL connections, affecting performance;

(5) The MySQL service configuration is unreasonable, resulting in MySQL performance degradation.

After understanding these problems, we can solve these problems by writing PHP extensions to improve the performance of MySQL.

3.1 Writing MySQL Query Cache extension

MySQL Query Cache can cache execution results to avoid repeated query operations. Using MySQL Query Cache in PHP requires developing a PHP extension.

The following is a code example of the MySQL Query Cache PHP extension:

#include "php.h"
#include "ext/mysqlnd/mysqlnd.h"
#include "ext/mysqlnd/mysqlnd_statistics.h"

static zend_function_entry mysql_query_cache_functions[] = {
    PHP_FE(mysql_query_cache_enable, NULL)
    PHP_FE(mysql_query_cache_disable, NULL)
    PHP_FE_END
};

static void mysql_query_cache_init_globals(zend_mysql_query_cache_globals *mysql_query_cache_globals) {
    mysql_query_cache_globals->enabled = 0;
}

static PHP_MINIT_FUNCTION(mysql_query_cache) {
    ZEND_INIT_MODULE_GLOBALS(mysql_query_cache, mysql_query_cache_init_globals, NULL);
    return SUCCESS;
}

static zend_bool mysqlnd_qc_is_cached(_mysqlnd_stmt *stmt) {
    if (stmt->result) {
        if ()

        return TRUE;
    }
    return FALSE;
}

static ZEND_FUNCTION(mysql_query_cache_enable) {
    MYSQLND *mysqlnd = mysqlnd_find_storage(handler);
    zend_mysql_query_cache_globals *mysql_query_cache_globals = zend_hash_str_find_ptr(
            &mysql_query_cache_globals->enabled = 1;
    RETURN_TRUE;
}

static ZEND_FUNCTION(mysql_query_cache_disable) {
    zend_mysql_query_cache_globals *mysql_query_cache_globals = zend_hash_str_find_ptr(
            &mysql_query_cache_globals->enabled = 0;
    RETURN_TRUE;
}

ZEND_GET_MODULE(mysql_query_cache)

Then compile and install the extension to use MySQL Query Cache in PHP to improve the performance of MySQL.

3.2 Writing MySQL Connection Pool extension

MySQL Connection Pool can cache MySQL connections to avoid frequently establishing and closing connections. Using MySQL Connection Pool in PHP requires developing a PHP extension.

The following is a code example of the MySQL Connection Pool PHP extension:

#include "php.h"
#include "ext/mysqlnd/mysqlnd.h"
#include "ext/mysqlnd/mysqlnd_statistics.h"

static zend_function_entry mysql_connection_pool_functions[] = {
    PHP_FE(mysql_connection_pool_enable, NULL)
    PHP_FE(mysql_connection_pool_disable, NULL)
    PHP_FE_END
};

static void mysql_connection_pool_init_globals(zend_mysql_connection_pool_globals *mysql_connection_pool_globals) {
    mysql_connection_pool_globals->enabled = 0;
}

static PHP_MINIT_FUNCTION(mysql_connection_pool) {
    ZEND_INIT_MODULE_GLOBALS(mysql_connection_pool, mysql_connection_pool_init_globals, NULL);
    return SUCCESS;
}

static ZEND_FUNCTION(mysql_connection_pool_enable) {
    MYSQLND *mysqlnd = mysqlnd_find_storage(handler);
    zend_mysql_connection_pool_globals *mysql_connection_pool_globals = zend_hash_str_find_ptr(
            &mysql_connection_pool_globals->enabled = 1;
    RETURN_TRUE;
}

static ZEND_FUNCTION(mysql_connection_pool_disable) {
    zend_mysql_connection_pool_globals *mysql_connection_pool_globals = zend_hash_str_find_ptr(
            &mysql_connection_pool_globals->enabled = 0;
    RETURN_TRUE;
}

ZEND_GET_MODULE(mysql_connection_pool)

Then compile and install the extension to use MySQL Connection Pool in PHP to improve the performance of MySQL.

4. Summary

Through the above introduction, we have learned the basic concepts of PHP extensions and how to use PHP extensions to improve the performance of MySQL. When developing web applications, optimizing program performance by writing PHP extensions can make the website more efficient and stable, and improve user service experience.

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