PHP mysqli_stmt_errno() 函数

定义和用法

mysqli_stmt_errno() 函数返回执行最后一条语句期间发生的错误代码。

语法

mysqli_stmt_errno($stmt)

参数

返回值

PHP mysqli_stmt_errno() 函数返回一个整数值，表示最后一条语句执行的错误代码。如果没有错误，则此函数返回0。

PHP 版本

此函数首次出现在 PHP 5 版本中，并在所有后续版本中均有效。

示例

以下示例演示了mysqli_stmt_errno()函数的用法（过程式风格）−

<?php
   $con = mysqli_connect("localhost", "root", "password", "mydb");

   mysqli_query($con, "CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
   print("Table Created.....\n");
   mysqli_query($con, "INSERT INTO myplayers values(1, 'Sikhar', 'Dhawan', 'Delhi', 'India')");
   print("Record Inserted.....\n");

   $stmt = mysqli_prepare($con, "SELECT * FROM myplayers");

   mysqli_query($con, "DROP TABLE myplayers");

   //Executing the statement
   mysqli_stmt_execute($stmt);

   //Error Code
   $code = mysqli_stmt_errno($stmt);
   print("Error Code: ".$code);

   //Closing the statement
   mysqli_stmt_close($stmt);

   //Closing the connection
   mysqli_close($con);
?>

这将产生以下结果 −

Table Created.....
Record Inserted.....
Error Code: 1146

示例

在面向对象风格中，此函数的语法是$stmt->errno。以下是此函数在面向对象风格中的示例 −

<?php
   //Creating a connection
   $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("Table Created.....\n");
   $con -> query("INSERT INTO myplayers values(1, 'Sikhar', 'Dhawan', 'Delhi', 'India')");
   print("Record Inserted.....\n");

   $stmt = $con ->prepare("SELECT * FROM myplayers");

   $con ->query("DROP TABLE myplayers");

   //Executing the statement
   $stmt->execute();

   //Error Code
   $code = $stmt ->errno;
   print("error Code: ".$code);

   //Closing the statement
   $stmt->close();

   //Closing the connection
   $con->close();

?>

这将产生以下结果 −

Table Created.....
Record Inserted.....
error Code: 1146

示例

如果最后执行的语句对象中没有错误，则此函数返回0 −

<?php
   $con = mysqli_connect("localhost", "root", "password", "mydb");

   mysqli_query($con, "CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
   print("Table Created.....\n");

   query = "INSERT INTO myplayers values(1, 'Sikhar', 'Dhawan', 'Delhi', 'India'),(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica'),(3, 'Kumara', 'Sangakkara', 'Matale', 'Srilanka')";

   //Preparing a statement
   $stmt = mysqli_prepare($con, $query);

   //Executing the statement
   mysqli_stmt_execute($stmt);
   print("Record Inserted.....\n");


   //Error Code
   $code = mysqli_stmt_errno($stmt);
   print("Error Code: ".$code);

   //Closing the statement
   mysqli_stmt_close($stmt);

   //Closing the connection
   mysqli_close($con);
?>

这将产生以下结果 −

Table Created.....
Record Inserted.....
Error Code: 0