Found a total of 10000 related content
jQuery DATETIME Functions - Complete Listing
Article Introduction：This is the only Date/Time jQuery functions you will ever need. It works better than any other date/time libraries out there and has minimal overhead, guaranteed speed and accuracy.
Includes functions to: get date, convert date, valid date, string t
2025-03-03
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567
Complete usage of mysql date function
Article Introduction：MySQL date function: Play with time and control data. Many friends are often dizzy when processing MySQL databases. In fact, mastering MySQL's powerful date functions can simplify the complex and easily control time data. In this article, let’s explore these functions in depth so that you will no longer be tortured by date format and time calculation. After reading, you can not only be proficient in using various date functions, but also understand the principles behind them and write more efficient and elegant SQL statements. Basic preparation: Time type and format Before starting, we need to clarify the data types that store dates and times in MySQL, such as DATE, TIME, DATETIME, TIMESTAMP, etc. They each have their own characteristics
2025-04-08
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344
php get all dates between two dates
Article Introduction：To get all dates between two dates, it is not difficult to implement with PHP. Just pay attention to the time format and loop logic, and it can be easily done. Generate date list using the DateTime class PHP's built-in DateTime class is a good tool for handling dates. We can use it to iterate through every day between the start date and the end date. functiongetDatesBetween($start,$end){$dates=[];$current=newDateTime($start);$end=newDateTime($end);whi
2025-07-06
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391
php iterate over a date range
Article Introduction：It is recommended to use the DatePeriod class to traverse date ranges in PHP. 1. The DatePeriod class was introduced from PHP5.3, and date traversal is implemented by setting the start date, end date and interval. For example, generate a date list from 2024-01-01 to 2024-01-05, which does not include the end date by default; 2. If you need to include the end date, you can adjust the end date or set the INCLUDE_END_DATE parameter; 3. The manual loop method can also complete the traversal using the DateTime object and the modify() method, which is suitable for scenarios where step size needs to be flexibly controlled; 4. Pay attention to the time zone problem that should be explicitly set to avoid the system's default time zone affecting the result; 5. PHP automatically handles leap years
2025-07-14
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168
How to use PHP to implement real-time notification system PHP message push and subscription
Article Introduction：To implement a real-time notification system, the core is to establish a long connection between the server and the client. 1. Use the WebSocket protocol to realize two-way real-time communication, PHP can be implemented through Ratchet and other libraries; 2. The front-end uses JavaScript to establish connections and process messages; 3. Optional message queues such as RedisPub/Sub decoupling high concurrency pressure; 4. Passing tokens through URL parameters to achieve user identity authentication; 5. Optimizing performance can be achieved through Swoole, message compression, connection pooling and other means; 6. The front-end realizes the disconnection mechanism, and uses an exponential backoff algorithm to control the reconnect frequency.
2025-07-25
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292
How to generate timestamp strings in PHP?
Article Introduction：Generating timestamp strings in PHP can be achieved by the following methods: 1. Use the time() function to generate Unix timestamps; 2. Use the date() function to generate detailed date and time strings; 3. Use the date() function to generate timestamps for a specific time zone after setting the time zone; 4. Use microtime(true) to generate timestamps with milliseconds; 5. Optimize timestamp generation in high concurrency environments through the cache mechanism.
2025-05-20
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435
php microtime as float
Article Introduction：To get microtime as float, the call method is $currentTime=microtime(true); which returns a floating point number containing seconds and microseconds. 1. Use microtime(true) to directly obtain floating point numbers in seconds, which is suitable for performance analysis and execution time statistics; 2. Compared with the default return string format, float is more convenient for mathematical operations; 3. You can record the time difference of the time by recording the code through $start and $end; 4. Pay attention to floating point accuracy, time unit conversion and avoid high-frequency calls when using it; 5. Common application scenarios include script execution time statistics, interface response monitoring, logging and timing task control. micro
2025-07-14
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577
Game Development with C : Building High-Performance Games and Simulations
Article Introduction：C is suitable for building high-performance gaming and simulation systems because it provides close to hardware control and efficient performance. 1) Memory management: Manual control reduces fragmentation and improves performance. 2) Compilation-time optimization: Inline functions and loop expansion improve running speed. 3) Low-level operations: Direct access to hardware, optimize graphics and physical computing.
2025-04-05
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467
My Windows time and date are incorrect
Article Introduction：Windows computer time and date errors are usually caused by settings or synchronization issues. First check whether the automatic synchronization function is turned off, enter the "Control Panel → Date and Time → Internet Time" tab, check "Sync with Internet Time Server", select the default server and click "Update Now". If the failure occurs, it may be a network or firewall problem; second check whether the BIOS time is consistent with the system time, the motherboard battery is out of power or the coexistence of multiple systems may cause an error in the time after restart. You can enter the BIOS to adjust the time or run the command in Windows to use the local time; finally confirm whether the time zone setting is correct, right-click the taskbar time icon and select "Adjust date/time" and ensure that the time zone is in the city, such as China
2025-07-21
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585
How to calculate days between two dates in Excel
Article Introduction：There are many ways to calculate the number of days between two dates in Excel. 1. The basic method is to subtract the start date by using the end date, such as =B1-A1; 2. If you only count the working day, use the NETWORKDAYS function and optionally exclude holidays, such as =NETWORKDAYS(A1,B1,D1:D10); 3. You can add or subtract 1 to control whether the start and end date is included; 4. Use the DATEDIF function to calculate the complex differences between year, month and day, such as =DATEDIF(A1,B1,"d").
2025-07-20
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728
php date to json format
Article Introduction：When processing dates in PHP and converting them to JSON format, it is key to make sure that the standard format is used for front-end compatibility. 1. It is recommended to use the DateTime class and format it as ISO8601 (such as YYYY-MM-DDTHH:MM:SS), because it can be directly parsed by JavaScript; 2. JSON does not support date type, date will be output in string form, and the front-end needs to use newDate() to convert the string into a date object; 3. You can choose to return a Unix time stamp, and the front-end is responsible for formatting, improving the flexibility of international projects; 4. Pay attention to the default time zone settings of the server, and it is recommended to use date_default_timezone_set() to clearly specify it; 5.
2025-07-08
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591
Top Best CI/CD Tools For DevOps and Programmers
Article Introduction：Top 10 Best CI/CD Tools For DevOps and Programmers. Many businesses are now adopting Agile and DevOps methodologies for software development to ensure the delivery of high-quality end products in a shorter time.
The backbone of Agile and DevOps prac
2024-12-28
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838
Pokemon Presents Release Time & Countdown
Article Introduction：This Pokemon Presents guide reveals the livestream's date and time, along with predictions for the event. While optimism is tempered, hopes remain high for exciting announcements.
Pokemon Presents Global Release Times:
Pokemon Presents begins Febru
2025-03-03
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631
How to set the time of bootstrap
Article Introduction：The method to set time in Bootstrap includes: using the <input type="time> HTML element to create a time input box. Use Bootstrap Datepicker to implement more advanced time selectors, including date and time selection. You can also use third-party plugins such as jQuery Timepicker or Bootstrap Timepicker.
2025-04-07
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776
What is time-taken in IIS log?
Article Introduction：time-taken measures the time it takes for IIS to process a request and send the last byte to the client in milliseconds. 1. It includes the entire process from IIS starting the process of processing the request to the end of the response to the sending of the last byte. 2. It contains the application pool idle waiting time and ASP.NET or other server-side processing time. 3. It does not include client rendering time and network delay. 4. Can be used to identify performance bottlenecks, such as slow query, deadlock, high load, etc. 5. Performance problems can be effectively analyzed by filtering high values, grouping by URL, comparing time ranges, and using averages and percentiles.
2025-07-23
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240
How to find the number of days between two dates in SQL?
Article Introduction：Calculating the number of days between two dates in SQL can be achieved through built-in functions of different databases. 1. MySQL and SQLServer use DATEDIFF(end_date, start_date) function to obtain the difference in the number of days, and the result is end-decreasing start. If the positive value is required, you can use ABS() to wrap it; 2. PostgreSQL directly subtracts the two date fields into date types and directly subtracts (end_date::date-start_date::date) to avoid partial interference of time; 3. Oracle can use TRUNC(end_date)-TRUNC(start_date) to remove partial shadow of time
2025-06-29
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521
