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mysqli::begin_transaction

mysqli_begin_transaction

(PHP 5 >= 5.5.0, PHP 7)

mysqli::begin_transaction -- mysqli_begin_transactionStarts a transaction

说明

面向对象风格 (method):

public bool mysqli::begin_transaction ([ int $flags [, string $name ]] )

过程化风格:

bool mysqli_begin_transaction ( mysqli $link [, int $flags [, string $name ]] )

Begins a transaction. Requires MySQL 5.6 and above, and the InnoDB engine (it is enabled by default). For additional details about how MySQL transactions work, see » http://dev.mysql.com/doc/mysql/en/commit.html.

参数

link

仅以过程化样式:由mysqli_connect()mysqli_init() 返回的链接标识。

flags

Valid flags are:

  • MYSQLI_TRANS_START_READ_ONLY: Start the transaction as "START TRANSACTION READ ONLY".

  • MYSQLI_TRANS_START_READ_WRITE: Start the transaction as "START TRANSACTION READ WRITE".

  • MYSQLI_TRANS_START_WITH_CONSISTENT_SNAPSHOT: Start the transaction as "START TRANSACTION WITH CONSISTENT SNAPSHOT".

name

Savepoint name for the transaction.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE

范例

Example #1 $mysqli->begin_transaction() example

面向对象风格

<?php
$mysqli 
= new mysqli("127.0.0.1""my_user""my_password""sakila");

if (
$mysqli->connect_errno) {
    
printf("Connect failed: %s\n"$mysqli->connect_error);
    exit();
}

$mysqli->begin_transaction(MYSQLI_TRANS_START_READ_ONLY);

$mysqli->query("SELECT first_name, last_name FROM actor");
$mysqli->commit();

$mysqli->close();
?>

过程化风格

<?php
$link 
mysqli_connect("127.0.0.1""my_user""my_password""sakila");

if (
mysqli_connect_errno()) {
    
printf("Connect failed: %s\n"mysqli_connect_error());
    exit();
}

mysqli_begin_transaction($linkMYSQLI_TRANS_START_READ_ONLY);

mysqli_query($link"SELECT first_name, last_name FROM actor LIMIT 1");
mysqli_commit($link);

mysqli_close($link);
?>

参见

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User Contributed Notes 1 note

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1
Luc
1 year ago
For PHP<5.5:

    mysqli_query($db, "START TRANSACTION");
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