madrobby

Implementation of the Luhn 10 algorithm to check validity of credit card numbers. See http://en.wikipedia.org/wiki/Luhn_algorithm for details on the algorithm.

var validCreditCard = function(a,b,c,d,e){for(d=+a[b=a.length-1],e=0;b--;)c=+a[b],d+=++e%2?2*c%10+(c>4):c;return!(d%10)};

validCreditCard('378282246310005'); //=> true
validCreditCard('378282246310006'); //=> false

// some numbers to test with
// 378282246310005 371449635398431 378734493671000

nzakas

/*
 * Quick and Dirty sprintf
 * Copyright 2011 Nicholas C. Zakas. All rights reserved.
 * BSD licensed
 */

/*
 * This function does not attempt to implement all of sprintf, just %s,
 * which is the only one that I ever use.
 */

johndyer

#simple version (http://mysite.com/+ goes to your Google+ account)
Redirect /+      https://plus.google.com/[yourid]
Redirect /@      https://twitter.com/[twitterusername]

#powerhouse  (http://mysite.com/+/about goes to your Google+ about page)
RedirectMatch ^/\+(.*)$ http://plus.google.com/[yourid]$1
RedirectMatch ^/@(.*)$ http://twitter.com/[twitterusername]$1

Rarst

Now Native

PhpStorm now bundles WordPress coding style natively, starting from version 8.

1. Go to Project Settings > Code Style > PHP.
2. Select Set From... (top right of window) > Predefined Style > WordPress.

No longer need to muck with this import! :)

grahamc

<?php

// Note: CA state law says no robocalls before 9AM, so wait until 12PM EST.

$sid = 'Your SID';
$token = 'Your Token';
$telephoneNumber = 'Your Telephone Number, the one that Twilio gives you.';

$client = new Services_Twilio($sid, $token);

luetkemj

// This gist is now maintained on github at https://github.com/luetkemj/wp-query-ref

<?php
/**
* WordPress Query Comprehensive Reference
* Compiled by luetkemj - luetkemj.github.io
*
* CODEX: http://codex.wordpress.org/Class_Reference/WP_Query#Parameters
* Source: https://core.trac.wordpress.org/browser/tags/4.9.4/src/wp-includes/query.php
*/

joshwnj

## give me a list of files from the month of May 2011
ls -laht --color=never | egrep 'May[ ]+[0-9]+[ ]+2011(.*)' | sed 's/.*2011 / /'

## move them to a separate directory
mkdir may-2011; ls -laht --color=never | egrep 'May[ ]+[0-9]+[ ]+2011(.*)' | sed 's/.*2011 / /' | xargs -I {} mv {} may-2011/

xentek

WordPress Unit Tests Quick Start Guide

This quick start guide is geared towards installing PHPUnit on OSX in order to run the WordPress unit tests. It uses homebrew to install PHP using homebrew-php. You can likely skip this step if you've already got php and pear installed properly.

If you use MAMP, then try these instructions to use MAMP's php and pear to install PHPUnit.

install homebrew

ruby <(curl -fsSkL raw.github.com/mxcl/homebrew/go)

westonruter

*/5 * * * * /home/pi/pinger/pinger.sh > /dev/null 2>&1

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application: