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PHP mysqli::begin_transaction

PHP original manual for mysqli::begin_transaction [ show | php.net ]

mysqli::begin_transaction

mysqli_begin_transaction

(PHP 5 >= 5.5.0, PHP 7)

mysqli::begin_transaction -- mysqli_begin_transaction — Starts a transaction

Description

Object oriented style (method):

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

Procedural style:

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

Begins a transaction. Requires 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.

Parameters

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". Requires MySQL 5.6 and above.

  • MYSQLI_TRANS_START_READ_WRITE: Start the transaction as "START TRANSACTION READ WRITE". Requires MySQL 5.6 and above.

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

name

Savepoint name for the transaction.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 $mysqli->begin_transaction() example

Object oriented style

<?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();
?>

Procedural style

<?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($link, MYSQLI_TRANS_START_READ_ONLY);

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

mysqli_close($link);
?>

See Also