


This article mainly introduces the details of data examples of querying the day, querying this week, and querying this month in PHP and MySQL. Interested friends can refer to it. I hope it will be helpful to everyone.
php, mysql query the current day, query this week, query this month's data instance (field is timestamp)
//其中 video 是表名; //createtime 是字段; // //数据库time字段为时间戳 // //查询当天: $start = date('Y-m-d 00:00:00'); $end = date('Y-m-d H:i:s'); SELECT * FROM `table_name` WHERE `time` >= unix_timestamp( '$start' ) AND `time` <= unix_timestamp( '$end' ) //查询本周: SELECT yearweek( '2011-04-17 15:38:22',1 ) //结果是201115 SELECT yearweek( '2011-04-17 15:38:22' ) //结果是201116 //yearweek的第2个参数设置为1的原因是,中国人习惯把周1作为本周的第一天 //另外补充下: //2011-04-17 是周日。 SELECT dayofweek( '2011-04-17 15:38:22' )// 查询出的是1,把礼拜天作为一周的第一天。 SELECT dayofweek( '2011-04-18 15:38:22' ) //查询出的是2 SELECT weekday( '2011-04-17 15:38:22' )// 查询出的是6, SELECT weekday( '2011-04-18 15:38:22' )// 查询出的是0, //所以建议使用weekday,查询出来的结果+1就可以了,就比较符合国人的习惯了。 SELECT * FROM `table_name` WHERE YEARWEEK( FROM_UNIXTIME( `time`, '%Y-%m-%d %H:%i:%s' ) ,1) = YEARWEEK( now( ),1 ) //查询本月: $start = date('Y-m-01 00:00:00'); $end = date('Y-m-d H:i:s'); SELECT * FROM `table_name` WHERE `time` >= unix_timestamp('”.$start.”') AND `time` <= unix_timestamp('$end') //查询本年: $start = date('Y-01-01 00:00:00'); $end = date('Y-m-d H:i:s'); SELECT * FROM `table_name` WHERE `time` >= unix_timestamp( '$start' ) AND `time` <= unix_timestamp( '$end' )
php Get the start timestamp and end time of today, yesterday, last week, and this month
<?php //<!--php 获取今日、昨日、上周、本月的起始时间戳和结束时间戳的方法,主要使用到了 php 的时间函数 mktime()。--> //1、php获取今日开始时间戳和结束时间戳 $beginToday = mktime(0,0,0,date('m'),date('d'),date('Y')); $endToday = mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1; echo $beginToday.'---'.$endToday; echo '<br/>'; //2、php获取昨日起始时间戳和结束时间戳 $beginYesterday = mktime(0,0,0,date('m'),date('d')-1,date('Y')); $endYesterday = mktime(0,0,0,date('m'),date('d'),date('Y'))-1; echo $beginYesterday.'---'.$endYesterday; echo '<br/>'; //3、php获取上周起始时间戳和结束时间戳 $beginLastweek=mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y')); $endLastweek=mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y')); echo $beginLastweek.'---'.$endLastweek; echo '<br/>'; //4、php获取本月起始时间戳和结束时间戳 $beginThismonth=mktime(0,0,0,date('m'),1,date('Y')); $endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y')); echo $beginThismonth.'---'.$endThismonth; echo '<br/>'; //PHP mktime() 函数用于返回一个日期的 Unix 时间戳。 //语法:mktime(hour,minute,second,month,day,year,is_dst) // //参数 描述 //hour 可选。规定小时。 //minute 可选。规定分钟。 //second 可选。规定秒。 //month 可选。规定用数字表示的月。 //day 可选。规定天。 //year 可选。规定年。在某些系统上,合法值介于 1901 - 2038 之间。不过在 PHP 5 中已经不存在这个限制了。 //is_dst可选。如果时间在日光节约时间(DST)期间,则设置为1,否则设置为0,若未知,则设置为-1。 //自 5.1.0 起,is_dst 参数被废弃。因此应该使用新的时区处理特性。参数总是表示 GMT 日期,因此 is_dst 对结果没有影响。 // //参数可以从右到左依次空着,空着的参数会被设为相应的当前 GMT 值。 echo(date("M-d-Y",mktime(0,0,0,12,36,2001))); //将输出结果如: // //Jan-05-2002
The above is the entire content of this article, I hope it will be helpful to everyone's study.
Related recommendations:
JS implementationGetting timeAnd setting countdown code sharing
jqueryGetting timeMethod summary
The above is the detailed content of Detailed explanation of data examples for querying the current day, querying this week, and querying this month using php and mysql. For more information, please follow other related articles on the PHP Chinese website!

PHP remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.

Fibers was introduced in PHP8.1, improving concurrent processing capabilities. 1) Fibers is a lightweight concurrency model similar to coroutines. 2) They allow developers to manually control the execution flow of tasks and are suitable for handling I/O-intensive tasks. 3) Using Fibers can write more efficient and responsive code.

The PHP community provides rich resources and support to help developers grow. 1) Resources include official documentation, tutorials, blogs and open source projects such as Laravel and Symfony. 2) Support can be obtained through StackOverflow, Reddit and Slack channels. 3) Development trends can be learned by following RFC. 4) Integration into the community can be achieved through active participation, contribution to code and learning sharing.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP is not dying, but constantly adapting and evolving. 1) PHP has undergone multiple version iterations since 1994 to adapt to new technology trends. 2) It is currently widely used in e-commerce, content management systems and other fields. 3) PHP8 introduces JIT compiler and other functions to improve performance and modernization. 4) Use OPcache and follow PSR-12 standards to optimize performance and code quality.

The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.


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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

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

SublimeText3 Chinese version
Chinese version, very easy to use

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function