Amount of code for the comparison of various styles of writing a `clamp` function in PHP Raw

README-amount-of-code-for-the-comparison-of-clamp-functions.md

📝 This text is part of the article Comparison of various styles of writing a clamp function in PHP

Summary

To measure the amount of code, different metrics can be used. For now I'll use the infamous lines of code (to represent how people see the code) and tokens (to represent how the PHP parser sees the code).

Line count

Lines of code can be easily counted using phploc⁽¹⁾.

NCLOC(2) (100.00%)	LLOC(3)	Percentage	subject	description
6	1	16.67%	832B9C44	return min max
6	1	16.67%	60AA891E	return/ternary/ternary
14	3	21.43%	7BC1F85B	if, if, return;
14	3	21.43%	83C742FF	if/return, if/return, return
12	3	25.00%	8389C469	if, elseif, return
12	3	25.00%	CAB599E9	if/return, elseif/return, else/return
8	3	37.50%	A13E087E	if/return, if/return, return (shorthand)

Token count

Using the token_get_all function, it is possible to see how the PHP compiler sees the code.⁽⁴⁾

tokens	non-whitespace tokens	subject	description
36	12	832B9C44	return min max
52	14	60AA891E	return/ternary/ternary
54	18	A13E087E	if/return, if/return, return (shorthand)
62	18	83C742FF	if/return, if/return, return
66	18	7BC1F85B	if, if, return;
66	18	8389C469	if, elseif, return
68	19	CAB599E9	if/return, elseif/return, else/return

Footnotes

1. Using the following command: find . -name 'clamp.*.php' -exec sh -c 'phploc {} | grep "(LLOC)"' \; -print
2. NCLOC = Non-Comment Lines of Code
3. LLOC = Logical Lines Of Code
4. find ../comparison-of-clamp-functions_55ca0e9377bbd49ee41241380e1fe3f9/ -type f -name '*.php' -not -path '*/vendor/*' -exec php ./count_tokens_in_file.php {} \;

count_tokens_in_file.php

<?php

$file = $argv[1];

$contents = file_get_contents($file);

$all_tokens = token_get_all($contents);

$tokens = array_filter($all_tokens, function ($token) {
    return ! is_string($token) && (
        $token[0] !== 382 // T_WHITESPACE
    );
});

$name = basename($file);
$count_all = count($all_tokens);
$count = count($tokens);

echo <<<TXT

File        : $name
Tokens All  : $count_all
Tokens      : $count

TXT;