Skill Topic · Cinematic

PHP Modify Strings — Strings Badalna

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

Overview

PHP Modify Strings — Strings Badalna — Quick Facts

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Function: Kya Karta Hai

🎯

`trim()`: Dono taraf se whitespace hatata hai

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`ltrim()`: Left (shuru) se whitespace hatata…

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`rtrim()`: Right (end) se whitespace hatata…

Topic 1

String Modify Karna Kya Hai?

📚 PHP me strings immutable nahi hain — aap unhe modify kar sakte ho. PHP kai built-in…

Topic 2

Upper Case — strtoupper()

💡 strtoupper() poori string ko capital letters me convert karta hai: `php <?php $text =…

Topic 3

Lower Case — strtolower()

🎯 strtolower() poori string ko small letters me convert karta hai. Yeh email addresses ya…

Topic 4

First Letter Capital — ucfirst()

⭐ ucfirst() sirf pehle character ko capital banata hai, baaki sab waisa hi rehta hai: `php…

Topic 5

Har Word Ka Pehla Letter Capital — ucwords()

🔑 ucwords() har word ke pehle letter ko capital banata hai: `php <?php $text = "hello world…

Topic 6

First Letter Small — lcfirst()

✨ lcfirst() sirf pehle character ko small banata hai: `php <?php $text = "Hello World";…

Topic 7

Replace — str_replace()

🌟 str_replace() string me kisi text ko doosre text se replace karta hai. Yeh case-sensitive…

Topic 8

Reverse — strrev()

🚀 strrev() string ko ulta kar deta hai. Yeh palindrome check karne me bhi kaam aata hai:…

Topic 9

Trim — Spaces Hatana

📚 trim() string ke dono taraf se extra whitespace (spaces, tabs, newlines) hata deta hai.…

Topic 10

Repeat — str_repeat()

💡 str_repeat() ek string ko specified number of times repeat karta hai: `php <?php echo…

Topic 11

Pad — str_pad()

🎯 str_pad() string ki length fix karta hai — chhoti string ho to padding add karta hai. Yeh…

Topic 12

Modify Functions Quick Reference

⭐ | Function | Kya Karta Hai | Example | |----------|---------------|---------| |…

Topic 13

Summary

🔑 | Point | Detail | |-------|--------| | Case change | strtoupper(), strtolower(),…

Quick Quiz

Quiz — Question 1

PHP Modify Strings — Strings Badalna ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

PHP Modify Strings — Strings Badalna ka 'trim()' kya hai?

Complete! 🎉

PHP Modify Strings — Strings Badalna Complete!

Aliens School · HIEN · Cinematic Knowledge

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