The multi_query() / mysqli_multi_query() function performs one or more queries against the database. The queries are separated with a semicolon.SyntaxObject oriented style:$mysqli -> multi_query(query)Procedural style:mysqli_multi_query(connection, query)...
The query() / mysqli_query() function performs a query against a database. Syntax Object oriented style: $mysqli -> query(query, resultmode) Procedural style: mysqli_query(connection, query, resultmode) Parameter Values ParameterDescription ...
$result=mysqli_query($con,$sql) So $result was undefined (false) when you tried to use it. PHP: $row=mysqli_fetch_array($result,MYSQLI_NUM); Chris. Indifference will be the downfall of mankind, but who cares? Time flies like an arrow, however, fruit flies like a banana. Webmaste...
常量 操作数据库 PHP一个重要的用途就是操作数据库喽,W3schools有教程可以参考。连接基本的连接,查询,commit,rollback等语句。 php /// Perform queries against the database: mysqli_query($con,"SELECT * FROM Persons"); ?...php $sql = "SELECT Name, Age FROM Persons"; $results = mysqli...
我们继续 MySQLi 扩展的学习，上篇文章中提到过，MySQLi 的扩展相对于 PDO 来说功能更加的丰富，所以...
The error message in PDO will look like “Connection failed: SQLSTATE[Hy000] [2002]”followed by more details stating that the My SQL host was not found. But the way to troubleshoot it is the same as the above. And of course, it is always important to remember one golden rule of tro...
// Check connection if(mysqli_connect_errno()) { echo"Failed to connect to MySQL: ". mysqli_connect_error(); } $sql="SELECT Lastname,Age FROM Persons ORDER BY Lastname"; if($result=mysqli_query($con,$sql)) { // Return the number of rows in result set ...