Explore efficient text databases in PHP: Understand the advantages and characteristics of different databases

PHP is a powerful server-side programming language with a wide range of applications. There are many cases of using PHP from simple websites to complex enterprise-level applications. For building web applications, a database is indispensable, so choosing an efficient database is crucial to the performance and reliability of web applications. There are many different types of databases to choose from in PHP, and this article will explore some of the most popular and commonly used efficient text databases and provide readers with specific code examples.

1. MySQL

MySQL is an open source relational database management system and one of the most popular databases in the world. MySQL provides excellent performance and reliability, especially for web applications with large numbers of concurrent users. It supports many different programming languages, including PHP, and makes it easy to integrate MySQL into your web application.

The following is a code example of how to connect and use a MySQL database:

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);
// 检查连接是否成功
if ($conn->connect_error) {
  die("连接失败: " . $conn->connect_error);
}

// 执行SQL语句
$sql = "SELECT * FROM MyGuests";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  // 输出数据
  while($row = $result->fetch_assoc()) {
    echo "id: " . $row["id"]. " - Name: " . $row["firstname"]. " " . $row["lastname"]. "<br>";
  }
} else {
  echo "0 结果";
}
$conn->close();
?>

2. SQLite

SQLite is a self-contained, lightweight embed database management system. It does not require a separate server process, but stores the entire database in a separate file. SQLite is a high-performance, full-featured database ideal for use in environments with storage constraints.

The following is a code example using a SQLite database:

<?php
// 打开数据库连接
$db = new SQLite3('mydatabase.db');

// 创建表
$createTable = "CREATE TABLE MyGuests (
  id INTEGER PRIMARY KEY,
  firstname TEXT,
  lastname TEXT
)";

// 查询
$result = $db->query("SELECT * FROM MyGuests");

while ($row = $result->fetchArray()) {
  echo "id: {$row['id']}, Name: {$row['firstname']} {$row['lastname']}";
}

// 关闭连接
$db->close();
?>

3. MongoDB

MongoDB is a distributed document database with high performance and scalability , which is becoming increasingly popular in recent years. Different from traditional relational databases, MongoDB is a non-relational database that uses JSON-style document format and dynamic schema.

The following is a code example using a MongoDB database:

<?php
// 创建连接
$m = new MongoClient();

// 选择数据库和集合
$db = $m->mydb;
$collection = $db->mycollection;

// 插入一条数据
$document = array( "title" => "MongoDB", "description" => "database", "likes" => 100 );
$collection->insert($document);

// 查找数据
$cursor = $collection->find();
foreach ($cursor as $document) {
  echo $document["title"] . "
";
}

// 关闭连接
$m->close();
?>

Summary

In this article, we explored three common high-performance text databases: MySQL, SQLite, and MongoDB. MySQL is a traditional relational database suitable for storing structured data; SQLite is a self-contained, lightweight embedded database suitable for storing data for small or single-user applications; MongoDB is a non-relational database. Suitable for storing unstructured data. No matter what type of web application you want to build, you should choose the best text database for your data storage needs.

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