Skill Topic · Cinematic

PHP RegEx — Regular Expressions Se Pattern Matching

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

Overview

PHP RegEx — Regular Expressions Se Pattern Matching — Quick Facts

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Function: Kya Karta Hai

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`preg_match()`: Pehla match dhundta hai

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`preg_match_all()`: Saare matches dhundta hai

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`preg_replace()`: Pattern ko replace karta hai

Topic 1

RegEx Kya Hai?

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Text me koi pattern dhundna…

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User input validate karna (email,…

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Text me find-and-replace karna

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Text ko custom delimiters se split…

Topic 2

RegEx Pattern Ki Structure

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Delimiter: Pattern ki shuruaat aur…

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Pattern: Woh actual text ya rules…

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Modifiers: Pattern ke behavior ko…

Topic 3

preg_match() — Pehla Match Dhundna

🎯 preg_match() string me pattern ka pehla match dhundta hai. Agar match milta hai to 1…

Topic 4

preg_match_all() — Saare Matches Dhundna

⭐ preg_match() sirf pehla match dhundta hai. Agar aapko saare matches chahiye, to…

Topic 5

preg_replace() — Find aur Replace

🔑 preg_replace() pattern ko dhund ke uski jagah naya text daal deta hai. Yeh PHP ka sabse…

Topic 6

preg_split() — Pattern Se Split

✨ explode() sirf ek fixed delimiter se split karta hai, lekin preg_split() pattern ke basis…

Topic 7

Meta Characters — Pattern Ke Building Blocks

🌟 Regular expressions ki asli taaqat meta characters me hai. Yeh special characters…

Topic 8

Lookahead aur Lookbehind

🚀 Yeh advanced patterns hain jo check karte hain ke kisi match ke aage ya peeche kya hai,…

Topic 9

Named Groups

📚 Normal groups me $matches[1], $matches[2] use karte hain jo confusing ho sakta hai. Named…

Topic 10

Practical Validations

💡 Real-world applications me RegEx sabse zyada input validation ke liye use hota hai: `php…

Topic 11

Common Patterns Quick Reference

🎯 | Pattern | Kya Check Karta Hai | Example | |---------|---------------------|---------| |…

Topic 12

Practical Example — Input Cleaner Class

⭐ `php <?php class InputCleaner { // Extra spaces remove karo public static function…

Topic 13

preg_grep() aur preg_quote()

🔑 preg_grep() — Array me se pattern ke basis par items filter karo: `php <?php $words =…

Topic 14

Summary

✨ | Concept | Detail | |---------|--------| | RegEx kya hai | Pattern matching language jo…

Quick Quiz

Quiz — Question 1

PHP RegEx — Regular Expressions Se Pattern Matching ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

PHP RegEx — Regular Expressions Se Pattern Matching ka 'preg_match()' kya hai?

Complete! 🎉

PHP RegEx — Regular Expressions Se Pattern Matching Complete!

Aliens School · HIEN · Cinematic Knowledge

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