PHP mysqli_stmt_errno() 函式

定義和用法

mysqli_stmt_errno() 函式返回執行最後一條語句期間發生的錯誤程式碼。

語法

mysqli_stmt_errno($stmt)

引數

返回值

PHP mysqli_stmt_errno() 函式返回一個整數值，表示最後一條語句執行的錯誤程式碼。如果沒有錯誤，則此函式返回0。

PHP 版本

此函式首次出現在 PHP 5 版本中，並在所有後續版本中均有效。

示例

以下示例演示了mysqli_stmt_errno()函式的用法（過程式風格）−

<?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);
?>

這將產生以下結果 −

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

示例

在面向物件風格中，此函式的語法是$stmt->errno。以下是此函式在面向物件風格中的示例 −

<?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();

?>

這將產生以下結果 −

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

示例

如果最後執行的語句物件中沒有錯誤，則此函式返回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);
?>

這將產生以下結果 −

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