``` function get_in_str($str='付致这行【电脑桌型】',$start="【",$end= '】'){ if(strstr($str, $star)&&strstr($str,$end)){ $t1 = mb_strpos($str,$star)+3; $t2 = mb_strpos($str,$end); $s = mb_substr($str,$t1,$t2-$t1); if(strstr($s, ':')){ $t3 = mb_strpos($s,':')+1; $s = mb_substr($s,$t3); } if(strstr($s, '(')){ $t4 = mb_strpos($s,'('); $s = mb_substr($s,0,$t4); } }else{ $s=$str; } echo $s; } ```