public function SessionStreamWrapper::stream_lock in Examples for Developers 3.x

Same name and namespace in other branches

1. 8 stream_wrapper_example/src/StreamWrapper/SessionStreamWrapper.php \Drupal\stream_wrapper_example\StreamWrapper\SessionStreamWrapper::stream_lock()

Advisory file locking.

This method is called in response to flock(), when file_put_contents() (when flags contains LOCK_EX), stream_set_blocking() and when closing the stream (LOCK_UN).

Parameters

int $operation: One of:

• LOCK_SH: To acquire a shared lock (reader).
• LOCK_EX: To acquire an exclusive lock (writer).
• LOCK_UN: To release a lock (shared or exclusive).
• LOCK_NB: If you don't want flock() to block while locking. This operation is not supported on Windows.

Return value

bool Returns TRUE on success or FALSE on failure.

Overrides PhpStreamWrapperInterface::stream_lock

See also

flock()

stream_set_blocking()

http://php.net/manual/en/streamwrapper.stream-lock.php

File

modules/stream_wrapper_example/src/StreamWrapper/SessionStreamWrapper.php, line 435

Class

SessionStreamWrapper

Example stream wrapper class to handle session:// streams.

Namespace

Drupal\stream_wrapper_example\StreamWrapper

Code

public function stream_lock($operation) {

  // @codingStandardsIgnoreEnd
  return TRUE;
}