PHP5中文手册

实例

返回最后一个 mysql 操作的 SQLSTATE 错误代码：

 <?PHP
 $con=mysqli_connect("localhost","my_user","my_password","my_db");
 // Check connection
 if (mysqli_connect_errno($con))
 {
 echo "Failed to connect to MySQL: " . mysqli_connect_error();
 }

// Table Persons already exists, so we should get an error
 $sql="CREATE TABLE Persons (Firstname VARCHAR(30),Lastname VARCHAR(30),Age INT)"
if (!mysqli_query($con,$sql))
 {
 echo "SQLSTATE error: ". mysqli_sqlstate($con);
 }

// Close connection
 mysqli_close($con);
?>