Skip to content

mt_rand is 4 times faster #1

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
joanhey wants to merge 3 commits into
base: patch-1
Choose a base branch
from
Open

mt_rand is 4 times faster #1

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
8308f5b
mt_rand is 4 times faster
joanhey May 18, 2025
00a32b4
Use faster SplFixedArray instead of array_fill
joanhey May 19, 2025
e0136b2
Merge pull request #1 from joanhey/joanhey-patch-1
joanhey May 19, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions loops/php/code.php
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,8 @@

function main(int $u)
{
$r = rand(0, 10000); # Get a random number 0 <= r < 10k
$a = array_fill(0, 10000, 0); # Array of 10k elements initialized to 0
$r = mt_rand(0, 10000); # Get a random number 0 <= r < 10k
$a = new SplFixedArray(10000); # Array of 10k elements initialized to 0
for ($i = 0; $i < 10000; $i++) { # 10k outer loop iterations
for ($j = 0; $j < 100000; $j++) { # 100k inner loop iterations, per outer loop iteration
$a[$i] += $j%$u; # Simple sum
Expand Down