How to query MySQL article data type in PHP

Text:

In PHP, querying the MySQL article data type is a very common operation. MySQL is a very popular relational database management system, and PHP is a very popular Web programming language. The combination between them is very easy. So, how to query the MySQL article data type in PHP?

In MySQL, articles are a special data type. They are just like the Word or txt files we usually use. They store some lengthy texts. An article can be viewed as a text box made up of many lines, each line consisting of a string of characters. So, how to create an article data type in MySQL?

In MySQL, the article data type is TEXT type. This type can store very large character type data, which meets the storage needs of this type of article data to the greatest extent. The TEXT type can store a relatively large amount of data, and can store up to 65535 characters, which is equivalent to 64KB of character data. Data type conversion is required before use, and articles can be queried in sections.

In PHP, there are two main ways to query the data type of MySQL articles. One is to query using the SELECT statement, and the other is to query using the fetch_row() method in the MySQLi extension. The specific usage is as follows:

1. Use SELECT statement to query

Using SELECT statement, you can easily query the article data type stored in MySQL. The code is as follows:

<?php //1.连接数据库
$con = mysqli_connect("localhost","root","123456","blog");
if(!$con){
  die("连接数据库失败！");
}

//2.执行SQL语句
$sql = "SELECT article FROM articles WHERE id=1";
$result = mysqli_query($con,$sql);

//3.获得查询结果
$row = mysqli_fetch_array($result);
echo $row[0];

//4.关闭连接
mysqli_close($con);
?>

$sql here is the query statement, where "article" is the article data type field we want to query. This field is stored in the "articles" table of MySQL and needs to be carried out according to the specific situation. Revise. $result is the query result, which contains the queried article data type. We can use the mysqli_fetch_array() function to obtain the data and operate it.

2. Use the fetch_row() method in the MySQLi extension to query

Use the fetch_row() method in the MySQLi extension to query the article data type stored in MySQL more quickly. The implementation method is as follows:

<?php //1.连接数据库
$con = mysqli_connect("localhost","root","123456","blog");
if(!$con){
  die("连接数据库失败！");
}

//2.执行SQL语句
$sql = "SELECT article FROM articles WHERE id=1";
$result = mysqli_query($con,$sql);

//3.获得查询结果
$row = mysqli_fetch_row($result);
echo $row[0];

//4.关闭连接
mysqli_close($con);
?>

In this example, we use the fetch_row() method to query the article data type. This method returns an array of data columns, which contains the queried article data type. We can use $row[0] to obtain the data and operate on it.

Summary

Querying the MySQL article data type in PHP is very simple. According to our needs, we can use different query methods to obtain article data types and perform related operations. In actual applications, it is necessary to choose the appropriate query method according to specific needs in order to query the required data more quickly.

The above is the detailed content of How to query MySQL article data type in PHP. For more information, please follow other related articles on the PHP Chinese website!