最方便的方法echostrtotime('23:59:59')-time();最快的方法$now=time();echo86400-date('H',$now)*3600-date('i',$now)*60-date('s');更快的方法echo86400-(time()+8*3600)%86400;附测试数据xubanditdeMacBook-Pro:~xubandit$timephp-fa.phpreal0m31.146suser0m30.966ssys0m0.075sxubanditdeMacBook-Pro:~xubandit$timephp-fb.phpreal0m48.574suser0m48.329ssys$i++){strtotime('23:59:59')-time();}xubanditdeMacBook-Pro:~xubandit$catb.php
