Usage of mysqli_query()-Mysql Tutorial-php.cn

Usage of mysqli_query()

angryTom

Release： 2020-02-07 16:55:16

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Usage of mysqli_query()

Usage of mysqli_query()

The mysqli_query() function executes a query against the database.

Syntax

mysqli_query(connection,query,resultmode);

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Parameter Description

Parameter	Description
connection	Required. Specifies the MySQL connection to use.
query	Required, specifies the query string.
resultmode	##Optional. a constant. Can be any of the following values: MYSQLI_USE_RESULT (use this if you need to retrieve large amounts of data) MYSQLI_STORE_RESULT (default)

Parameter

Description

connection

Required. Specifies the MySQL connection to use.

query

Required, specifies the query string.

resultmode

##Optional. a constant. Can be any of the following values:

Usage example:

<?php 
// 假定数据库用户名：root，密码：123456，数据库：RUNOOB 
$con=mysqli_connect("localhost","root","123456","RUNOOB"); 
if (mysqli_connect_errno($con)) 
{ 
    echo "连接 MySQL 失败: " . mysqli_connect_error(); 
} 
 
// 执行查询
mysqli_query($con,"SELECT * FROM websites");
mysqli_query($con,"INSERT INTO websites (name, url, alexa, country)
VALUES (&#39;百度&#39;,&#39;https://www.baidu.com/&#39;,&#39;4&#39;,&#39;CN&#39;)");
 
mysqli_close($con);
?>

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(Free learning video tutorial recommendation:

mysql video tutorial)

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