PHP SHA3 functionality

For those coming to this later (after this post) PHP 7.1.0 has support for SHA3-512.

Per the PHP Manual (http://php.net/manual/en/function.hash-algos.php) the hash_algos() function will output your system's available hash algorithms. The following code will output your system's available hash algorithms:

<?php
    echo "<pre>";
    print_r (hash_algos());
    echo "</pre>";
?>

My output looks something like this:

Array
(
    [0] => md2
    [1] => md4
    [2] => md5
    ...
)

It's possible.

Maybe too late, but I've worked on a pure-PHP implementation here:

• SHA3-224/256/384/512
• SHAKE128/256 (arbitrary output size)
• LGPL 3+
• Works in PHP 5.2+ (considerably slower on older PHP)
• No extensions required.
• Moderately well tested.
• Based on the (public domain) reference implementation in C.
• Arbitrary input size.

It is a simple and fast implementation in PHP (which means far slower than C). Since this is purely "CPU-bound", PHP 7.0 runs 4x faster than PHP 5.6. (55kB/s here)

Fine with a small input. Correctly handles a huge input, just hogs CPU for minutes.

I hope it helps.

Yes sure simply you can use hash function in php

<?php
echo hash('sha3-512' , 'String you want to hash');