PHP mysqli_query () function
Performed for database queries:
<?php // 假定数据库用户名:root,密码:123456,数据库:w3big $con=mysqli_connect("localhost","root","123456","w3big"); if (mysqli_connect_errno($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 ('百度','https://www.baidu.com/','4','CN')"); mysqli_close($con); ?>
Definition and Usage
mysqli_query () function to execute a query against the database.
grammar
mysqli_query( connection,query,resultmode ) ;
参数 | 描述 |
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connection | 必需。规定要使用的 MySQL 连接。 |
query | 必需,规定查询字符串。 |
resultmode |
可选。一个常量。可以是下列值中的任意一个:
|
technical details
return value: | For successful SELECT, SHOW, DESCRIBE or EXPLAIN query will return a mysqli_result object. For other successful query will return TRUE. If it fails, it returns FALSE. |
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PHP version: | 5+ |
Update log: | Added asynchronous query functions in PHP 5.3.0 in. |
PHP MySQLi Reference Manual