mysqli_stmt_sqlstate()函数从上一个语句操作返回SQLSTATE错误
mysqli_stmt_sqlstate()函数返回在执行最后一条语句期间发生的SQLSTATE错误。
mysqli_stmt_sqlstate($stmt);
| 序号 | 参数及说明 |
|---|---|
| 1 | stmt(必需) 这是一个表示语句的对象（已准备）。 |
PHP mysqli_stmt_sqlstate()函数返回一个字符串值，该字符串值表示在执行最后一条语句期间发生的SQLSTATE错误。如果没有错误，则此函数返回00000。
此函数最初是在PHP版本5中引入的，并且可以在所有更高版本中使用。
以下示例演示了mysqli_stmt_sqlstate()函数（面向过程风格）的用法-
<?php
$con = mysqli_connect("localhost", "root", "password", "mydb");
mysqli_query($con, "CREATE TABLE emp(ID INT, FirstName VARCHAR(20))");
print("创建表.....\n");
$stmt = mysqli_prepare($con, "INSERT INTO emp (ID) VALUES (?)");
mysqli_stmt_bind_param($stmt, "s", $id);
$id = 'test';
//执行语句
mysqli_stmt_execute($stmt);
//State
$state = mysqli_stmt_sqlstate($stmt);
print("state: ".$state);
//结束语句
mysqli_stmt_close($stmt);
//关闭连接
mysqli_close($con);
?>输出结果
创建表..... state: HY000
在面向对象风格中，此函数的语法为$con-> sqlstate。以下是面向对象风格的此函数的示例-
<?php
//建立连接
$con = new mysqli("localhost", "root", "password", "mydb");
$con -> query("CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
print("创建表.....\n");
$con -> query("INSERT INTO myplayers values(1, 'Sikhar', 'Dhawan', 'Delhi', 'India')");
print("插入记录.....\n");
$stmt = $con ->prepare("SELECT * FROM myplayers");
$con ->query("DROP TABLE myplayers");
//执行语句
$stmt->execute();
//SQl State
$state = $stmt ->sqlstate;
print("SQL State: ".$state);
//结束语句
$stmt->close();
//关闭连接
$con->close();
?>输出结果
创建表..... 插入记录..... SQL State: 42S02
以下是mysqli_stmt_sqlstate()函数的另一个示例-
<?php
$con = mysqli_connect("localhost", "root", "password", "mydb");
mysqli_query($con, "CREATE TABLE emp(ID INT, FirstName VARCHAR(20), LastName VARCHAR(5), DateOfBirth VARCHAR(255), Salary INT)");
print("创建表.....\n");
$stmt = mysqli_prepare($con, "INSERT INTO emp values(?, ?, ?, ?, ?)");
mysqli_stmt_bind_param($stmt, "isssi", $id, $fname, $lname, $pob, $country);
$id = 1;
$fname = 'Swetha';
$lname = 'Yellapragada';
$dob = DATE('1981-12-05');
$country = 2366;
//执行语句
mysqli_stmt_execute($stmt);
//Warnings
$state = mysqli_stmt_sqlstate($stmt);
print("state: ".$state);
//结束语句
mysqli_stmt_close($stmt);
//关闭连接
mysqli_close($con);
?>输出结果
创建表..... state: 22001