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mysqli::begin_transaction

mysqli_begin_transaction

(PHP 5 >= 5.5.0)

mysqli::begin_transaction -- mysqli_begin_transactionStarts a transaction

Descrição

Estilo orientado à objeto (method):

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

Estilo procedural:

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.

Parâmetros

link

Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

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.

Valor Retornado

Retorna TRUE em caso de sucesso ou FALSE em caso de falha.

Exemplos

Exemplo #1 $mysqli->begin_transaction() example

Estilo orientado à objeto

<?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();
?>

Estilo procedural

<?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);
?>

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