README

Copyright (C) June 2016-present, Tyler R. Drury. All Rights Reserved.

This project contains php scripts which can be accessed world wide on a PHP server, for the inclusion in front or back end website development, allowing for the convenient representation and calculation of common integer sequences, including

• Factorials
• Prime numbers
• Horadam numbers
• Polygonal numbers
• Pascal numbers
• Hofstadter numbers

Developed and maintained by Tyler R. Drury,

Platforms Supported

• PHP 5.6+

Primary Developer

• Tyler R. Drury

Additional Contributors

Use

For front-end use in browsers, please use JavaScript to make AJAX requests.

note-for convenience jQuery is used in the example.

$.get(
    '...intSeq\\fibonnacci.php?N=20',
    function(obj){console.log(obj.toString());}
);

or alternately if a constant series is required when the webpage is served, replacing the html pre code tags with script tags.

<pre><code>
<?php
require_once 'integerSequence.php';

use integerSequence\Fibonacci as fib;
?>
var f = <?php echo json_encode(fib::series(20));?>;

console.log(f);
</code></pre>

For back-end developers, the most current stable Source Code can be found here, or for developers whom wish to contribute, through the GitHub repo here.

After installing the integerSequence directory on your server, scripts may access the namespace and its contents in the following manner.

require_once 'integerSequence.php';

use integerSequence\Horadam as Horadam;
use integerSequence\Fibonacci as fib;
use integerSequence\getPrimes;

$p = getPrimes(1000) //calculate all primes up to 1000
$h = Horadam(2,3,1,2);    //unnamed Horadam sequence
$s = $h->series(20);
$f = fib::series(20);

echo json_encode(
    'primes'=>$p,
    'horadam'=>$s,
    'fib'=>$f
);

This script will return a JSON encoded object containing all prime numbers up to 1000, the first 20 elements of an arbitrary, unnamed Horadam sequence, along with the first 20 elements of the Fibonacci sequence.

Related Projects

Similar or related projects for various platforms can also be found here

Libraries

• IntegerSequences-cpp a compiled C++17 compatible library for generating common sequences of integers
• IntegerSequences-js a Javascript library for generating common sequences of integers for web browsers
• IntegerSequences-py a Pure Python Package for generating common sequences of integers

Additional On-line References and Resources

• PHP IntegerSequence Reference
• The On-line Encyclopaedia of Integer Sequences

Acknowledgements

• Neil Sloane, founder of the Online Encyclopaedia of Integer Sequences