Get Max Upload Size from PHP ini's 'post_max_size' && 'upload_max_filesize'

maxsize.php

<?php
//Simple Function to Get Max Upload Size from PHP	

	$max_upload = min(ini_get('post_max_size'), ini_get('upload_max_filesize'));
	$max_upload = str_replace('M', '', $max_upload);
	$max_upload = $max_upload * 1024;

That’s true, although a bit more rare.

If you need to account for those as well, you could use something like this to convert the value:

function human_readable_to_bytes(string $amount): int {
    $units = ['', 'K', 'M', 'G'];
    
    preg_match('/(\d+)\s?([KMG]?)/', $amount, $matches);
    [$_, $nr, $unit] = $matches;
    $exp = array_search($unit, $units);
    return (int)$nr * pow(1024, $exp);
}