Simple hasher in PHP

SimpleHasher.php

<?php

class SimpleHasher{
    /*
    /* Simple hash
    */
    
    private $hash_algo;

    function __construct( $algo = 'sha256' ){
        $this->hash_algo = $algo;
    }

    public function hashString( $user_string ){
        return hash( $this->hash_algo, $user_string );
    }
}

# Simple Hasher
$hasher = new SimpleHasher('sha512');

# Hash it
$user_hashed_string = $hasher->hashString('Hello World');

?>