protected function openLockHandle()
    {
        // PHP allows periods, '.', to be scheme names. Normalize the scheme
        // name to something that won't cause problems. Also, avoid problems
        // with case-insensitive filesystems. We use bin2hex() rather than a
        // hashing function since most scheme names are small, and bin2hex()
        // only doubles the string length.
        $sub_dir = bin2hex($this->getProtocol());

        // Since we're flattening out whole filesystems, at least create a
        // sub-directory for each scheme to attempt to reduce the number of
        // files per directory.
        $temp_dir = sys_get_temp_dir() . '/flysystem-stream-wrapper/' . $sub_dir;

        // Race free directory creation. If @mkdir() fails, fopen() will fail
        // later, so there's no reason to test again.
        ! is_dir($temp_dir) && @mkdir($temp_dir, 0777, true);

        // Normalize paths so that locks are consistent.
        // We are using sha1() to avoid the file name limits, and case
        // insensitivity on Windows. This is not security sensitive.
        $lock_key = sha1(Util::normalizePath($this->getTarget()));

        // Relay the lock to a real filesystem lock.
        return fopen($temp_dir . '/' . $lock_key, 'c');
    }
protected function openLockHandle()
    {
        // PHP allows periods, '.', to be scheme names. Normalize the scheme
        // name to something that won't cause problems. Also, avoid problems
        // with case-insensitive filesystems. We use bin2hex() rather than a
        // hashing function since most scheme names are small, and bin2hex()
        // only doubles the string length.
        $sub_dir = bin2hex($this->getProtocol());

        // Since we're flattening out whole filesystems, at least create a
        // sub-directory for each scheme to attempt to reduce the number of
        // files per directory.
        $temp_dir = sys_get_temp_dir() . '/flysystem-stream-wrapper/' . $sub_dir;

        // Race free directory creation. If @mkdir() fails, fopen() will fail
        // later, so there's no reason to test again.
        ! is_dir($temp_dir) && @mkdir($temp_dir, 0777, true);

        // Normalize paths so that locks are consistent.
        // We are using sha1() to avoid the file name limits, and case
        // insensitivity on Windows. This is not security sensitive.
        $lock_key = sha1(Util::normalizePath($this->getTarget()));

        // Relay the lock to a real filesystem lock.
        return fopen($temp_dir . '/' . $lock_key, 'c');
    }
protected function openLockHandle ( ) { // PHP allows periods, '.', to be scheme names. Normalize the scheme // name to something that won't cause problems. Also, avoid problems // with case-insensitive filesystems. We use bin2hex() rather than a // hashing function since most scheme names are small, and bin2hex() // only doubles the string length. $ sub_dir = bin2hex ( $ this -> getProtocol ( ) ) ; // Since we're flattening out whole filesystems, at least create a // sub-directory for each scheme to attempt to reduce the number of // files per directory. $ temp_dir = sys_get_temp_dir ( ) . '/flysystem-stream-wrapper/' . $ sub_dir ; // Race free directory creation. If @mkdir() fails, fopen() will fail // later, so there's no reason to test again. ! is_dir ( $ temp_dir ) && @ mkdir ( $ temp_dir , 0777 , true ) ; // Normalize paths so that locks are consistent. // We are using sha1() to avoid the file name limits, and case // insensitivity on Windows. This is not security sensitive. $ lock_key = sha1 ( Util :: normalizePath ( $ this -> getTarget ( ) ) ) ; // Relay the lock to a real filesystem lock. return fopen ( $ temp_dir . '/' . $ lock_key , 'c' ) ; }
Creates an advisory lock handle.

@return resource|false
Creates an advisory lock handle .