protected function ensure_path_exists() {
        global $CFG;
        if (!is_writable($this->path)) {
            if ($this->custompath && !$this->autocreate) {
                throw new coding_exception('File store path does not exist. It must exist and be writable by the web server.');
            }
            $createdcfg = false;
            if (!isset($CFG)) {
                // This can only happen during destruction of objects.
                // A cache is being used within a destructor, php is ending a request and $CFG has
                // already being cleaned up.
                // Rebuild $CFG with directory permissions just to complete this write.
                $CFG = $this->cfg;
                $createdcfg = true;
            }
            if (!make_writable_directory($this->path, false)) {
                throw new coding_exception('File store path does not exist and can not be created.');
            }
            if ($createdcfg) {
                // We re-created it so we'll clean it up.
                unset($CFG);
            }
        }
        return true;
    }
protected function ensure_path_exists() {
        global $CFG;
        if (!is_writable($this->path)) {
            if ($this->custompath && !$this->autocreate) {
                throw new coding_exception('File store path does not exist. It must exist and be writable by the web server.');
            }
            $createdcfg = false;
            if (!isset($CFG)) {
                // This can only happen during destruction of objects.
                // A cache is being used within a destructor, php is ending a request and $CFG has
                // already being cleaned up.
                // Rebuild $CFG with directory permissions just to complete this write.
                $CFG = $this->cfg;
                $createdcfg = true;
            }
            if (!make_writable_directory($this->path, false)) {
                throw new coding_exception('File store path does not exist and can not be created.');
            }
            if ($createdcfg) {
                // We re-created it so we'll clean it up.
                unset($CFG);
            }
        }
        return true;
    }
protected function ensure_path_exists ( ) { global $ CFG ; if ( ! is_writable ( $ this -> path ) ) { if ( $ this -> custompath && ! $ this -> autocreate ) { throw new coding_exception ( 'File store path does not exist. It must exist and be writable by the web server.' ) ; } $ createdcfg = false ; if ( ! isset ( $ CFG ) ) { // This can only happen during destruction of objects. // A cache is being used within a destructor, php is ending a request and $CFG has // already being cleaned up. // Rebuild $CFG with directory permissions just to complete this write. $ CFG = $ this -> cfg ; $ createdcfg = true ; } if ( ! make_writable_directory ( $ this -> path , false ) ) { throw new coding_exception ( 'File store path does not exist and can not be created.' ) ; } if ( $ createdcfg ) { // We re-created it so we'll clean it up. unset ( $ CFG ) ; } } return true ; }
Checks to make sure that the path for the file cache exists.

@return bool
@throws coding_exception
Checks to make sure that the path for the file cache exists .