求一段可以在指定时间例如:在2014/5/21显示“您好!”代码,超过时间则显示“已过期!”。
回复讨论(解决方案)
echo date('Y/n/d') == '2014/5/21' ? '您好!' : '已过期!';
if('20'.date('y/n/d',time())=='2014/5/21'){ echo '你好'; }else{ echo '已过期';}
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