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@krakjoe
krakjoe / crawler.php
Last active October 11, 2023 19:07
parallel Futures, Channels (buffered, unbuffered, synchros), Events using parallel producer/consumer pattern
<?php
use \parallel\{Runtime, Future, Channel, Events};
/* usage php crawler.php [http://example.com] [workers=8] [limit=500] */
$page = $argv[1] ?: "https://blog.krakjoe.ninja"; # start crawling this page
$workers = $argv[2] ?: 8; # start this number of threads
$limit = $argv[3] ?: 500; # stop at this number of unique pages
$timeout = $argv[4] ?: 3; # socket timeout for producers
@alexpchin
alexpchin / socket-cheatsheet.js
Created December 15, 2015 16:58
A quick cheatsheet for socket.io
// sending to sender-client only
socket.emit('message', "this is a test");
// sending to all clients, include sender
io.emit('message', "this is a test");
// sending to all clients except sender
socket.broadcast.emit('message', "this is a test");
// sending to all clients in 'game' room(channel) except sender
@rnagle
rnagle / wpdb_default_tables.sql
Last active March 28, 2024 22:37
Default WordPress Database Table Create Statements
DROP TABLE IF EXISTS wp_users;
CREATE TABLE wp_users (
ID bigint(20) unsigned NOT NULL auto_increment,
user_login varchar(60) NOT NULL default '',
user_pass varchar(64) NOT NULL default '',
user_nicename varchar(50) NOT NULL default '',
user_email varchar(100) NOT NULL default '',
user_url varchar(100) NOT NULL default '',
user_registered datetime NOT NULL default '0000-00-00 00:00:00',
user_activation_key varchar(60) NOT NULL default '',
@mindplay-dk
mindplay-dk / migrator.php
Created June 16, 2012 19:11
Migrate a PHP codebase to use namespaces.
<?php
/**
* Namespace Migration Script
*
* @author Rasmus Schultz <rasmus@mindplay.dk>
* @license http://www.gnu.org/licenses/gpl-3.0.txt
*
* This script will scan through an entire PHP codebase and rewrite the
* scripts, adding a namespace clause based on the directory structure,
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

@eikes
eikes / getTimezone.js
Created February 15, 2012 14:39
Get or estimate browsers timezone name in JavaScript
var d = new Date();
var usertime = d.toLocaleString();
// Some browsers / OSs provide the timezone name in their local string:
var tzsregex = /\b(ACDT|ACST|ACT|ADT|AEDT|AEST|AFT|AKDT|AKST|AMST|AMT|ART|AST|AWDT|AWST|AZOST|AZT|BDT|BIOT|BIT|BOT|BRT|BST|BTT|CAT|CCT|CDT|CEDT|CEST|CET|CHADT|CHAST|CIST|CKT|CLST|CLT|COST|COT|CST|CT|CVT|CXT|CHST|DFT|EAST|EAT|ECT|EDT|EEDT|EEST|EET|EST|FJT|FKST|FKT|GALT|GET|GFT|GILT|GIT|GMT|GST|GYT|HADT|HAEC|HAST|HKT|HMT|HST|ICT|IDT|IRKT|IRST|IST|JST|KRAT|KST|LHST|LINT|MART|MAGT|MDT|MET|MEST|MIT|MSD|MSK|MST|MUT|MYT|NDT|NFT|NPT|NST|NT|NZDT|NZST|OMST|PDT|PETT|PHOT|PKT|PST|RET|SAMT|SAST|SBT|SCT|SGT|SLT|SST|TAHT|THA|UYST|UYT|VET|VLAT|WAT|WEDT|WEST|WET|WST|YAKT|YEKT)\b/gi;
// In other browsers the timezone needs to be estimated based on the offset:
var timezonenames = {"UTC+0":"GMT","UTC+1":"CET","UTC+2":"EET","UTC+3":"EEDT","UTC+3.5":"IRST","UTC+4":"MSD","UTC+4.5":"AFT","UTC+5":"PKT","UTC+5.5":"IST","UTC+6":"BST","UTC+6.5":"MST","UTC+7":"THA","UTC+8":"AWST","UTC+9":"AWDT","UTC+9.5":"ACST"