MySQL and PHP
Copyright 1997-2021 the PHP Documentation Group.
TableSelect::lockExclusive
Execute EXCLUSIVE LOCK
public mysql_xdevapi\TableSelect mysql_xdevapi\TableSelect::lockExclusive(int lock_waiting_option);
Execute a read operation with EXCLUSIVE LOCK. Only one lock can be active at a time.
lock_waiting_option
The optional waiting option that defaults to
MYSQLX_LOCK_DEFAULT
. Valid values
are:
MYSQLX_LOCK_DEFAULT
MYSQLX_LOCK_NOWAIT
MYSQLX_LOCK_SKIP_LOCKED
TableSelect object.
Example 5.178 mysql_xdevapi\TableSelect::lockExclusive
example
<?php $session = mysql_xdevapi\getSession("mysqlx://user:password@localhost"); $schema = $session->getSchema("addressbook"); $table = $schema->getTable("names"); $session->startTransaction(); $result = $table->select('name', 'age') ->lockExclusive(MYSQLX_LOCK_NOWAIT) ->execute(); $session->commit(); $row = $result->fetchAll(); print_r($row); ?>
The above example will output something similar to:
Array ( [0] => Array ( [name] => John [age] => 42 ) [1] => Array ( [name] => Sam [age] => 42 ) )