Today I will share with you tips on converting PHP time into milliseconds.
In daily development work, we often need to convert time into milliseconds. This process seems very simple, but once you master the simple skills, it will greatly improve your development efficiency.
First, let us understand the related functions of date and time in PHP. There are many functions in PHP that handle date and time, such as date(), time(), strtotime(), etc. Among them, the date() function can convert the specified date and time format into a string format, while time() can obtain the timestamp of the current time, and strtotime() can convert the string date into a timestamp. These functions are widely used in PHP, but they all return a timestamp in seconds.
So the question is, how to convert a date and time into milliseconds? The answer is also simple: in PHP, we just need to use microsecond-level timestamps. Each microsecond is equal to one thousandth of a millisecond, which is 1,000 when converted into numbers.
Microsecond-level timestamps can be obtained by adding microtime() before the time() function. For example, the following code can obtain the microsecond level timestamp of the current time:
list($usec, $sec) = explode(" ", microtime()); $time = ((float)$usec + (float)$sec) * 1000;
In this code snippet, we use the list() function and explode() function to split the value returned by microtime() Divide into two parts. $usec will contain the fractional part of the microsecond timestamp, while $sec contains the integer part. Then, we add $usec and $sec and multiply the result by 1000 to get the millisecond-level timestamp we want.
Of course, if you only need to convert the timestamp into milliseconds, you can also use the following code:
$msec = round(microtime(true) * 1000);
In this code snippet, we use the microtime(true) function to get the current microsecond level timestamp of the time, then multiply it by 1000 and use the round() function to round the result to the nearest integer.
Using this method to convert timestamps to milliseconds is very simple and very efficient. This technique is often used in development because most frameworks and libraries need to specify times in milliseconds. Now that you've learned how to convert time to milliseconds using PHP, let's get started speeding up your development!
The above is the detailed content of How to convert time to milliseconds in php. For more information, please follow other related articles on the PHP Chinese website!

This article explores efficient PHP array deduplication. It compares built-in functions like array_unique() with custom hashmap approaches, highlighting performance trade-offs based on array size and data type. The optimal method depends on profili

This article explores PHP array deduplication using key uniqueness. While not a direct duplicate removal method, leveraging key uniqueness allows for creating a new array with unique values by mapping values to keys, overwriting duplicates. This ap

This article analyzes PHP array deduplication, highlighting performance bottlenecks of naive approaches (O(n²)). It explores efficient alternatives using array_unique() with custom functions, SplObjectStorage, and HashSet implementations, achieving

This article details implementing message queues in PHP using RabbitMQ and Redis. It compares their architectures (AMQP vs. in-memory), features, and reliability mechanisms (confirmations, transactions, persistence). Best practices for design, error

This article examines current PHP coding standards and best practices, focusing on PSR recommendations (PSR-1, PSR-2, PSR-4, PSR-12). It emphasizes improving code readability and maintainability through consistent styling, meaningful naming, and eff

This article explores optimizing PHP array deduplication for large datasets. It examines techniques like array_unique(), array_flip(), SplObjectStorage, and pre-sorting, comparing their efficiency. For massive datasets, it suggests chunking, datab

This article details installing and troubleshooting PHP extensions, focusing on PECL. It covers installation steps (finding, downloading/compiling, enabling, restarting the server), troubleshooting techniques (checking logs, verifying installation,

This article explains PHP's Reflection API, enabling runtime inspection and manipulation of classes, methods, and properties. It details common use cases (documentation generation, ORMs, dependency injection) and cautions against performance overhea


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

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

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

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),

Notepad++7.3.1
Easy-to-use and free code editor

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
