PHP Challenges: Check whether a given string is an anagram of another given string

PHP Challenges - 1: Exercise-21 with Solution

Write a PHP program to check whether a given string is an anagram of another given string.

Input : ('anagram','nagaram')

According to Wikipedia an anagram is direct word switch or word play, the result of rearranging the letters of a word or phrase to produce a new word or phrase, using all the original letters exactly once; for example, the word anagram can be rearranged into nag-a-ram.

Explanation :

Sample Solution :

PHP Code :

<?php
// Function to check if two strings are anagrams
function is_anagram($a, $b)
{
    // Check if the character counts of both strings are equal
    if (count_chars($a, 1) == count_chars($b, 1))
    {
        // If equal, the strings are anagrams
        return "These two strings are anagrams";
    }
    else
    {
        // If not equal, the strings are not anagrams
        return "These two strings are not anagrams";
    }
}
// Test the is_anagram function with two pairs of strings and print the results
print_r(is_anagram('anagram', 'nagaram') . "\n");
print_r(is_anagram('cat', 'rat') . "\n");
?>

Explanation:

Here is a brief explanation of the above PHP code:

• Function definition:
• The code defines a function named "is_anagram($a, $b)" which takes two strings '$a' and '$b' as input parameters.
• Inside the function:
• It uses the "count_chars()" function to count the occurrences of each character in both strings.
• It compares character counts of both strings using ==. If they are equal, it means that both strings have the same characters with the same frequency, indicating they are anagrams.
• If the character counts are not equal, it means the strings are not anagrams.
• Function Call & Testing:
• The "is_anagram()" function is called twice with different pairs of strings ('anagram', 'nagaram') and ('cat', 'rat').
• Finally the "print_r()" function displays whether each pair of strings are anagrams or not.

Sample Output:

This two strings are anagram                                
This two strings are not anagram  

Flowchart:

PHP Code Editor:

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