flock

<?php         if ($handle) {

            try {

                if (flock($handle, LOCK_SH)) {

                    clearstatcache(true, $path);



                    $contents = fread($handle, $this->size($path) ?: 1);

<?php                     $contents = fread($handle, $this->size($path) ?: 1);



                    flock($handle, LOCK_UN);

                }

            } finally {

                fclose($handle);

<?php     public function getSharedLock($block = false)

    {

        if (! flock($this->handle, LOCK_SH | ($block ? 0 : LOCK_NB))) {

            throw new LockTimeoutException("Unable to acquire file lock at path [{$this->path}].");

        }

<?php     public function getExclusiveLock($block = false)

    {

        if (! flock($this->handle, LOCK_EX | ($block ? 0 : LOCK_NB))) {

            throw new LockTimeoutException("Unable to acquire file lock at path [{$this->path}].");

        }

<?php     public function releaseLock()

    {

        flock($this->handle, LOCK_UN);



        $this->isLocked = false;

<?php         if (! flock($handle, LOCK_EX | LOCK_NB)) {

            return false;

        }