---
title: "Magic Constants in PHP"
url: https://daily.dev/posts/magic-constants-in-php-5zwx1wp0w
source_url: https://ashallendesign.co.uk/blog/php-magic-constants
type: article
source: "Community Picks"
published: 2024-07-18T10:11:05.158Z
updated: 2024-08-30T02:18:26.828Z
tags: ["php", "webdev"]
reading_time: 7
upvotes: 64
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Magic Constants in PHP

**[Community Picks](https://daily.dev/sources/community)** · 7 min read · 64 upvotes · 0 comments

## Summary

PHP provides 9 magic constants that hold special compile-time information. These include __FUNCTION__, __METHOD__, __CLASS__, ::class, __TRAIT__, __NAMESPACE__, __LINE__, __FILE__, and __DIR__. These constants can be useful for retrieving context-specific data like current function name, method name, class name, and file paths. Examples illustrate how each constant behaves in different scenarios, including within classes, traits, namespaces, and anonymous functions.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://ashallendesign.co.uk/blog/php-magic-constants>

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---

Tags: [#php](https://daily.dev/tags/php), [#webdev](https://daily.dev/tags/webdev)

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