Skill Topic · Cinematic

PHP Magic Constants — Special Auto-Changing Constants

Version: v2.0.0 | Modified: 2026-03-25

Overview

PHP Magic Constants — Special Auto-Changing Constants — Quick Facts

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Magic Constant: Kya Return Karta Hai

🎯

`LINE`: Current line number

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`FILE`: File ka full path

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`DIR`: Directory ka path

Topic 1

Magic Constants Kya Hain?

📚 Normal constants ki value fixed hoti hai — ek baar set, hamesha same. Lekin Magic…

Topic 2

`LINE` — Current Line Number

💡 Jis line par yeh likha hai, us line ka number return karta hai. Debugging me bahut useful…

Topic 3

`FILE` — Current File Path

🎯 Current file ka full absolute path return karta hai: `php <?php echo __FILE__; // Output:…

Topic 4

`DIR` — Current Directory

⭐ Current file ki directory ka path return karta hai. Yeh dirname(__FILE__) ka shortcut…

Topic 5

`FUNCTION` — Current Function Name

🔑 Jis function ke andar yeh likha hai, us function ka naam return karta hai: `php <?php…

Topic 6

`CLASS` — Current Class Name

✨ Jis class ke andar yeh likha hai, us class ka naam return karta hai: `php <?php class…

Topic 7

`METHOD` — Current Method (Class::method)

🌟 __FUNCTION__ sirf function ka naam deta hai, lekin __METHOD__ class ka naam bhi saath me…

Topic 8

`NAMESPACE` — Current Namespace

🚀 Current namespace ka naam return karta hai. Agar koi namespace defined nahi hai to empty…

Topic 9

`TRAIT` — Current Trait Name

📚 Jis trait ke andar yeh likha hai, us trait ka naam return karta hai: `php <?php trait…

Topic 10

`ClassName::class` — Full Qualified Class Name

💡 Class ka poora naam with namespace return karta hai. Yeh technically magic constant nahi…

Topic 11

Complete Reference Table

🎯 | Magic Constant | Kya Return Karta Hai | Example Output |…

Topic 12

Practical Example: Debug Logger

⭐ `php <?php class Logger { public static function debug($message, $file = null, $line =…

Topic 13

Summary

🔑 | Point | Detail | |-------|--------| | Pehchaan | Dono taraf double underscores __NAME__…

Quick Quiz

Quiz — Question 1

PHP Magic Constants — Special Auto-Changing Constants ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

PHP Magic Constants — Special Auto-Changing Constants ka '__LINE__' kya hai?

Complete! 🎉

PHP Magic Constants — Special Auto-Changing Constants Complete!

Aliens School · HIEN · Cinematic Knowledge

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PHP Magic Constants — Special Auto-Changing Constants

PHP Magic Constants — Special Auto-Changing Constants — Quick Facts

Magic Constant: Kya Return Karta Hai

`__LINE__`: Current line number

`__FILE__`: File ka full path

`__DIR__`: Directory ka path

Magic Constants Kya Hain?

`__LINE__` — Current Line Number

`__FILE__` — Current File Path

`__DIR__` — Current Directory

`__FUNCTION__` — Current Function Name

`__CLASS__` — Current Class Name

`__METHOD__` — Current Method (Class::method)

`__NAMESPACE__` — Current Namespace