Play-LM1.5主题PHP7报错修改

Warning: Use of undefined constant sign1 - assumed 'sign1' 
(this will throw an Error in a future version of PHP) 
in wp-content\themes\Play-LM\modules\sign.php on line 1

原文：
<?php if (get_opt('ho2_sign_cs') == sign1) {?><div class="section header-stick bottommargin-sm clearfix" style="padding: 20px 0;">
改为：
<?php if (get_opt('ho2_sign_cs') == 'sign1') {?><div class="section header-stick bottommargin-sm clearfix" style="padding: 20px 0;">
也就是把sign1加上''变为'sign1'


Warning: Use of undefined constant PRC - assumed 'PRC' 
(this will throw an Error in a future version of PHP) 
in wp-content\themes\Play-LM\comments.php on line 20
原文：
date_default_timezone_set(PRC);
改为
date_default_timezone_set('PRC');