Possible Duplicate: datetime vs timestamp? I have a Mysql table, which has a column add_date . It tracks the date/time when the record was added to the database. Queries based on this table: Display when the record was added in the format: 2 hours ago, 4 weeks ago, 1 year ago etc Allow users to search records inserted in any day/month/year. So the user may be allowed to choose to see
可能重复: 日期时间vs时间戳? 我有一个Mysql表,它有一个列add_date 。 它跟踪记录添加到数据库的日期/时间。 基于此表查询: 以格式添加记录时显示:2小时前,4周前,1年前等 允许用户搜索任何日/月/年插入的记录。 因此,用户可能被允许选择仅查看2009年插入的记录。 在这种情况下哪个更好--unix时间戳或日期时间? 现在我正在使用这两种方式,但由于表格随着时间的推移会有数百万条记录,所以这两列可能会
This question already has an answer here: Should I use the datetime or timestamp data type in MySQL? 33 answers Timestamp (both PHP ones and MySQL's ones) are stored using 32 bits (ie 4 bytes) integers ; which means they are limited to a date range that goes from 1970 to 2038. DATETIME don't have that limitation -- but are stored using more bytes (8 bytes, if I'm not mistaken)
这个问题在这里已经有了答案: 我应该在MySQL中使用日期时间还是时间戳数据类型? 33个答案 时间戳(PHP和MySQL的)都是使用32位(即4字节)整数存储的; 这意味着它们仅限于从1970年到2038年的日期范围。 DATETIME没有这个限制 - 但是使用更多的字节存储(如果我没有弄错的话8个字节) 之后,在存储PHP所看到的时间戳或MySQL所看到的时间戳之间: 使用PHP时间戳意味着PHP的操作更容易 - 请参阅日期/时间函数 使用M
I seem to be running into an issue inserting NULL into a DATE field in MySQL 5.6. The error is Error Code: 1292. Incorrect date value: '' for column 'StartDate' at row 1. Here is the table description. The StartDate and EndDate are both DATE type, NULLABLE and default value of NULL. Active bit(1) NO b'1' ClientContact varchar(255) YES ClientID int(11) unsigned NO
我似乎遇到了在MySQL 5.6的DATE字段中插入NULL的问题。 错误是错误代码:1292.错误的日期值:''在第1行的'StartDate'列。 这里是表格的描述。 StartDate和EndDate都是DATE类型,NULLABLE和默认值NULL。 有效位(1)否b'1' ClientContact varchar(255)是 ClientID int(11)unsigned NO MUL ClientReferenceNumber varchar(100)是 描述mediumtext YES 结束日期是 HourlyRate decim
This question already has an answer here: Should I use the datetime or timestamp data type in MySQL? 33 answers Internally all TIMESTAMP data is stored as 4 byte integer denoting number of seconds since Unix epoch. What you see presented in your software is dependent on how your software presents this data. For example, if you change your timezone to different one, it will have an effect o
这个问题在这里已经有了答案: 我应该在MySQL中使用日期时间还是时间戳数据类型? 33个答案 内部所有TIMESTAMP数据都以4字节整数表示,表示自Unix纪元以来的秒数。 您在软件中看到的内容取决于您的软件如何显示此数据。 例如,如果您将时区更改为不同的时区,它将对从TIMESTAMP列读取的数据产生影响(Unix时代为UTC) 不会混合数据。 MySQL会负责将你的YYYY-MM-DD HH:MM:SS转换为时间戳。 尽管对时区有所警惕! 当
I am trying to understand what exactly is responsible for changing and converting timezones and time respectively in my application stack and what is the best way to go about converting time to the required timezone in application code. I am currently using: Javascript/HTML font end Laravel PHP framework server side MySQL storage (Defaults to local system time for timestamps etc.) I am
我想了解究竟是什么责任在我的应用程序堆栈中分别更改和转换时区和时间,以及在应用程序代码中将时间转换为所需时区的最佳方式是什么。 我目前正在使用: Javascript / HTML字体结束 Laravel PHP框架服务器端 MySQL存储(默认为时间戳的本地系统时间等) 我认为: MySQL不能为DateTime列存储时区,只能存储YYY:MM:DD hh:mm:ss,这取决于开发人员将时区存储在单独的列中,并将存储的时间转换为应用程序代码中的本
When I pass POST data through AJAX to my controller it is empty. In the AJAX the data is still there but after I send it the controller it says it is empty. AJAX: function usernameCheck() { var input = document.getElementById("usernameInput"); var icon = document.getElementById("userIcon"); var xmlhttp, username = document.getElementById("usernameInput"), message
当我通过AJAX将POST数据传递给我的控制器时,它是空的。 在AJAX中,数据仍然存在,但是在我发送控制器之后,它说它是空的。 AJAX: function usernameCheck() { var input = document.getElementById("usernameInput"); var icon = document.getElementById("userIcon"); var xmlhttp, username = document.getElementById("usernameInput"), message = document.getElementById("usernameMess
在PHP ,我可以得到一组符合指定均值和标准差的随机数吗? The stats_rand_gen_normal function will do exactly this. (Assuming you mean a normal distribution.)
在PHP ,我可以得到一组符合指定均值和标准差的随机数吗? stats_rand_gen_normal函数将完成此操作。 (假设你的意思是正态分布。)
Possible Duplicate: How can I get which radio is selected via jQuery? I am attempting to put a user rating system on my site but only the first value gets passed on, so in the table the rating column is always a one. Its been a while since I have worked with radios. Here is what I have. <form id="add-rateing"> <input type="radio" name="MOVIE_RATING" value="1" > 1 <input
可能重复: 我怎样才能得到通过jQuery选择哪个收音机? 我试图在我的网站上放置一个用户评分系统,但只有第一个值被传递,所以在表中评分列总是一个。 自从我与无线电合作以来,这已经有一段时间了。 这是我的。 <form id="add-rateing"> <input type="radio" name="MOVIE_RATING" value="1" > 1 <input type="radio" name="MOVIE_RATING" value="2" > 2 <input type="radio" name="MOVIE_RATIN
Possible Duplicate: Loop through array in JavaScript I want to make the equivalent of php's foreach in javascript. Because I don't really know the Javascript language, I'd like someone to rewrite this PHP code into the Javascript piece: $my_array = array(2 => 'Mike', 4 => 'Peter', 7 => 'Sam', 10 => 'Michael'); foreach($my_array as $id => $name) { echo $id .
可能重复: 在JavaScript中循环访问数组 我想在JavaScript中做相当于PHP的foreach。 因为我不太了解Javascript语言,所以我希望有人把这段PHP代码改写成Javascript代码片段: $my_array = array(2 => 'Mike', 4 => 'Peter', 7 => 'Sam', 10 => 'Michael'); foreach($my_array as $id => $name) { echo $id . ' = ' . $name; } 这甚至有可能在JavaScript语言中做? 最接近的构造是a = { 2: 'Mike', 4
I've succesfully created and uploaded advanced template on my shared host. As next step, I must run the yii migrate . But I cannot because I've not the console access. What could you suggest to me? Please note that I cannot change the host, because it's not a decision of mine I cannot access the server using SSH I've already tried something like PHPShell, but I got p
我已成功创建并在我的共享主机上上传了高级模板。 下一步,我必须运行yii migrate 。 但我不能,因为我没有控制台访问。 你能向我建议什么? 请注意 我不能改变主人,因为这不是我的决定 我无法使用SSH访问服务器 我已经尝试过一些像PHPShell,但我尝试运行yii migrate --interactive=0时被permissione denied 我也试过这个:添加一个actionMigrateUp到frontend/controllers/siteController.php public function