php 根据输入 开始时间 结束时间 获取数据库中表中记录
我要做的是一个统计页面 查询条件是根据输入(js点击选择时间)开始时间 结束时间 点确定按钮查询这时间段记录
数据库字段:
id int(10)
ip varchar(50)
time varchar(50)
type varchar(50)
开始日期: 结束日期:
下面是一个表格:
内容是类型和对应数量
请各位帮下忙,刚接触统计
------解决方案--------------------
开始日期:timeStart" onfocus="c.showMoreDay = false;c.show(this);" /> 结束日期:timeEnd" onfocus="c.showMoreDay = false;c.show(this);" />
$t1=$_POST['timeStart'];<br /> $t2=$_POST['timeEnd'];<br /> $sql="select type,count(*) from tt where time BETWEEN '$t1' AND '$t2' group by type";<br /> $result=mysql_query($sql);<br /> while($row=mysql_fetch_row($result)){<br /> echo $row[0].' '.$row[1].'<br>';<br /> }
------解决方案--------------------
time varchar(50)
至少应该校正传入数据符合 time 字段的格式才能比较
他没说,我不知道
------解决方案--------------------
关键就是数据库语句,原理和做法就和你按ID查询一样的。SQL语句二楼已经给出来了。
另外一点的话,楼主可以去下载个时间选择插件,毕竟让用户手动输入时间是很不理想的。介绍一个jq的 jquery-calendar 网上有很多种样式表,可以自己选样式。
------解决方案--------------------
time varchar(50)
你保存的时间是字符串,那么
2012.12.14 10:43
2012/12/14 10:43:20
2012-12-14 10:43:31p
都是合法的日期
如果表单传入的是 2012/12/14 10:43:22
那么至少有两个是比配不到的
------解决方案--------------------
那你传入的日期格式是怎样的。
------解决方案--------------------
即便只是年月日
'2012/12/14' 与 '2012-12-14' 也是不相等的
------解决方案--------------------
只要格式能够统一,#1的代码就可以用了
------解决方案--------------------
判断一下就可以了
if(!empty($t1) && !empty($t2)){<br /> $sql="select type,count(*) from tt where time BETWEEN '$t1' AND '$t2' group by type";<br /> }else{<br /> $sql="select type,count(*) from total_counter group by type";<br /> }<br /> $result=mysql_query($sql);
------解决方案--------------------
这样写好些,能适应各种情况
$t1 = $_POST['timeStart'];<br> $t2 = $_POST['timeEnd'];<br> $t = array(1);<br> if($t1) $r[] = "time>='$t1'";<br> if($t2) $r[] = "time $t = join(' and ', $t);<br> <br> $sql = "select type,count(*) from total_counter where $t group by type"; <div class="clear"> </div>

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 Chinese version
Chinese version, very easy to use

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Zend Studio 13.0.1
Powerful PHP integrated development environment

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
