全选和 筛选 以及 比较好用的 sql语句 高级查询
查询[条件并列用and] select * from required where xuenian like '%年%' and teachercode=01 order by starttime limit 0,2 修改 同时修改两个数据【数据使用逗号隔开】 update required set teachercode = 02 ,majorcode = '201702' where ids = 5 select major,count(*) from class where 1=1 group by major //分组查询
5.4
<?php $tt="sssss,ssrsss"; $t = explode(",", $tt); $shuZ=' '; foreach($t as $v) { $shuZ.=" name like '%".$v."%' or"; } $str = substr($shuZ,0,strlen($shuZ)-2); echo $str; var_dump($t); $r = count($t); var_dump($r);//数组长度 ?>
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全選和選刪按鈕 選中的放到數組裏面
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <script src="../fenye/jquery-1.11.2.min.js"></script> </head> <body> <input type="checkbox" id="aaa" /> <input type="checkbox" name="sss" a='s' />1 <input type="checkbox" name="sss" a='m'/>2 <input type="checkbox" name="sss" a='n'/>3 <input type="checkbox" name="sss" a='k'/>4 </body> <script> $("#aaa").click(function(){ if($(this).prop("checked")==true) { $("[name='sss']").prop("checked",true); var chang = $("input[name='sss']:checked"); var shuzu = new Array(); for(var i =0;i<chang.length;i++) { shuzu[i]=chang.eq(i).attr("a"); } alert(shuzu); } else { $("[name='sss']").prop("checked",false); } }) </script> </html>