? PHP strrev() & str_shuffle()

? Quick Overview

PHP provides useful string manipulation functions like strrev() and str_shuffle() that allow you to reverse a string and shuffle its characters. These functions are commonly used in password generation, text transformations, and learning string behavior.

?️ Key Concepts

strrev() reverses the entire string character by character.
str_shuffle() randomly rearranges all characters.

? Syntax / Theory

strrev(string) → returns reversed string
str_shuffle(string) → returns shuffled string

? Code Example — strrev()

? View Code Example

// Reverse a string using strrev()
<?php
$string = "Hello";
$reversed = strrev($string);
echo $reversed;
?>

? Output

olleH

? Code Example — str_shuffle()

? View Code Example

// Shuffle characters randomly using str_shuffle()
<?php
$string = "Hello";
$shuffled = str_shuffle($string);
echo $shuffled;
?>

? Output

Random output such as olHle or lHoel

? Interactive Visual Example

? Use Cases

Password and token randomization
Palindrome checking
Text obfuscation
Learning string manipulation logic

✅ Tips & Best Practices

strrev() reverses everything including spaces and symbols.
str_shuffle() is non-deterministic; results vary each run.
Do not rely on str_shuffle() for cryptographic security.

? Try It Yourself

Reverse a sentence entered by the user.
Shuffle a word multiple times in a loop.
Combine both functions in a single script.