.Write a PHP program to perform string manipulations.

 .Write a PHP program to perform string manipulations

   

   

.

<?php

$string = "Hello, World!";

// String length

$length = strlen($string);

echo "Length: $length\n";

// Convert to uppercase

$uppercase = strtoupper($string);

echo "Uppercase: $uppercase\n";

// Convert to lowercase

$lowercase = strtolower($string);

echo "Lowercase: $lowercase\n";

// Extract substring

 $substring = substr($string, 7, 5);

echo "Substring: $substring\n";

// Replace a substring

 $replaced = str_replace("World", "PHP", $string); 

echo "Replaced: $replaced\n"; 

// Split into an array

 $words = explode(" ", $string);

 echo "Words: "; print_r($words);

 // Join array elements into a string 

$joined = implode("-", $words); 

echo "Joined: $joined\n";

 // Trim whitespace $trimmed = trim(" Hello "); 

echo "Trimmed: $trimmed\n";

// Check if a string contains another string 

$contains = strpos($string, "Hello") !== false; 

echo "Contains 'Hello': " . ($contains ? "Yes" : "No") . "\n";

 ?>