public static function get_instance() { if (self::$instance === null) { $classname = __CLASS__; self::$instance = new $classname(); } return self::$instance; }
/> <img alt="<?php echo $val['filename']; ?> " src="<?php echo $val['filepath']; ?> " width="19px" height="20px"/> <?php $i++; } ?> <br/> 打印精度<select name="precision" id="precision"> <?php $precision = order_Core::get_print_precision(); $i = 0; foreach ($precision as $key => $val) { ?> <option value="<?php echo $key; ?> "<?php if ($i == 0) { echo ' selected'; } ?> ><?php echo $val; ?> </option>