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Make Amazon S3 bucket contents public by default

{

"Version":"2008-10-17",

"Statement":[{

"Sid":"AllowPublicRead",

"Effect":"Allow",

"Principal": {

"AWS": "*"

"Action":["s3:GetObject"],

"Resource":["arn:aws:s3:::bucket/*"

]

}

]

}

But beware, anything you add to that bucket will be on the inter-webs for all to see.

#amazon #s3

How to install Lua on your Mac (OSX)

If you're a fan of Lua, or are messing around with the Corona SDK, having lua installed on your mac is a very good idea. Hopefully this will make it pretty easy.In order to make this work, you need to have make installed on your mac. The easiest way to get this is to install xCode. Remember to run Install Xcode.app after your download it.

Hopefully Easy 1 Click Installation

You can download installLua.command by clicking here. It's in a zip file, so you'll need to unzip it. The you should (hopefully) just be able to click it and it will walk you through the installation. You may need to set the correct permissions on the file, which you can do by opening up your terminal, going to the directory where installLua.command was unzipped to, and typing:

chmod +x installLua.command

Installing it yourself using the Terminal

If you're able to fire up your own terminal, and wan't to try doing it by hand, here are the commands. You can ignore anything starting with the # sign, as that's a comment.

# Make a temporary directory mkdir temp # Go to that directory cd /temp # Download the latest version of Lua curl -O http://www.lua.org/ftp/lua-5.2.0.tar.gz # Extract it tar -xzvf lua-5.2.0.tar.gz # Go to the new directory cd lua-5.2.0 # Compile it make macosx # Test it. make test # If it succeeds, install it. sudo make install

The code is also on gitHub if you want to do something with it, improve it, or fix any bugs I overlooked.

#lua #install #mac #apple #corona

Check if your PHP script is being run from the Command Line

If you write Cli scripts it's often handy to be able to determine if PHP is being used via the web, or from the command line. Luckily enough it's super easy to check:

<?php function isCli() { return (php_sapi_name() == 'cli' && empty($_SERVER['REMOTE_ADDR'])); } ?>

#php #cli

Common PHP Headers (and Mime Types)

Here is a listing of all the common PHP headers and Mime Types which I can never seem to remember. Try not to spend all day reading it.

PDF header('Content-type: application/pdf');

RSS header('Content-Type: application/rss+xml; charset=ISO-8859-1');

Text header('Content-type: text/plain');

XML header('Content-type: text/xml');

JSON header('Content-type: application/json');

JPEG header('Content-type: image/jpeg');

ZIP header('Content-type: application/zip');

Atom header('Content-type: application/atom+xml');

CSS header('Content-type: text/css');

JavaScript header('Content-type: text/javascript');

#php #headers #mime types

Using the PHP SDK to run FQL queries using the Facebook Graph API

This one took me awhile to figure out for some reason, mainly because they don't make great mention of it in the switch over from the old api to the new graph api.

So if you're looking to run a FQL query and you're using the new PHP SDK for the Graph API, your code should look something like this:

(Obviously you need to add in your id/key.)

https://gist.github.com/1561267

#facebook #graph api #fql #php

Counting Facebook Fans in PHP Using the Graph API

Until Facebook opens up the API to get more data about likes, the only quantitative information you can pull out is the number of fans a page has. The good news though is that the new Graph API makes it super simple to do this.

https://gist.github.com/1558910

That's it. It'll be nice when they allow you to pull out more relevant information, like who the fans are, etc., but hopefully that will come in time.

#php #facebook #graph api

Using the Coda Code Navigator More Efficiently: Bookmarks!

I love Panic's Coda, and I am anxiously awaiting their new version, since I think it's just a few features away from being the perfect editor. That being said, while researching if there was a way to sort the Code Navigator alphabetically (there isn't) I came across the bookmarks feature, which I never knew about. So if you use the Code Navigator (and you should) you can add inline comments in your page, which will then appear in the code navigator--which makes it so much nicer when you organize your code well, and and you're editing a long file.

The syntax to add a bookmark is as follows:

CSS: /* !some description of where you are in the file */ HTML:  Javascript: /* !some description of where you are in the file */ or // !some description of where you are in the file PHP: /* !some description of where you are in the file */ or // !some description of where you are in the file

Note that in all cases, your text needs to have the '!' infront of it to work.

Enjoy!

#coda

Determining The Percent Change Between Two Numbers in PHP

Although this is fairly simple, I kept struggling trying to get my brain around the notion of determining the percent change between 2 numbers. Once I did finally get it working, I thought I might as well share the PHP function so I don't forget it later. So here is is, a PHP function to determine the percentage change between 2 numbers:

https://gist.github.com/1546328

function percentChange($oldNos = 0, $newNos = 0) { $scratchSheet = ($newNos + 0) - ($oldNos + 0); return round((($scratchSheet / $oldNos) * 100),2); }

Especially the first and last ones.

#funny #autocorrect

This explains the smell in the house...

Get Headers From Incoming Request Using PHP

There are 2 good ways to get the headers from an incoming request. If you're using Apache, I recommend apache_request_headers(), which you would use like this:

$headers = apache_request_headers(); foreach ($headers as $header => $value) { echo "$header: $value \n"; }

If you're not using Apache, you can also parse them out of the $_SERVER variable using something like this:

print_r(getHeaders()); function getHeaders() { $headers = array(); foreach ($_SERVER as $k => $v) { if (substr($k, 0, 5) == "HTTP_") { $k = str_replace('_', ' ', substr($k, 5)); $k = str_replace(' ', '-', ucwords(strtolower($k))); $headers[$k] = $v; } } return $headers; }

#php #headers

Working with Twitter @anywhere cookies in PHP

I've been doing a lot of work recently with twitter's new @anywhere JavaScript API. While it's quite nice, it is also at this point very beta. There aren't a ton of features, and access to the @anywhere objects is very limited. When a user authorizes your application, @anywhere sets a cookie on the users's browser:

Once the user has authorized the host site, @Anywhere will set a cookie named "twitter_anywhere_identity" that contains the id of the logged in user. You can read this on the server side to learn the user's ID.

While the cookie contains a super limited amount of data, it's fairly easy to use a little reg-ex to extract the UserID of the user:

$cookie = $_COOKIE["twitter_anywhere_identity"]; preg_match("/(.*):(.*)/", $cookie, $matches);

Then $matches[1] is the user's id and, $matches[2] is the signature. You can validate the signature to make sure that the data is coming from Twitter by then doing a simple call:

if(sha1($matches[1] . "consumer secret") == $matches[2]) { //Valid Match }

#twitter #cookies #php

Creating arrays from MySQL Selects in PHP

I lost about an hour of my life to this last night, so I thought I would post the solution here in case anyone else was having a similar problem.

I was working on a library I wrote some time ago for rendering forms, and I needed to double check if a value was in an array. I was doing a sub select in a MYSql query that looked like this: (select GROUP_CONCAT(experienceid SEPARATOR ',') from e_industryexperiencemap) as industryexperience which would turn a CSV list of values, such as '12,4,1,4'

Let's assume that I placed those values in a variable called $SelectedIDs. I was then doing this: $SelectedIDs = array($SelectedIDs); Where I turn $SelectedIDs into an array so I can use in_array to check if a value is present. Such as: if (in_array($IDtoCheck, $SelectedIDs)) { echo 'success'; } else { echo 'not present'; }

//$IDtoCheck = 12; Now, the problem I was having is that no matter what I did I could never get in_array to return TRUE, even though I knew the values were correct. Took me awhile to figure it out, but the problem was this:

Since the list came out of a database it was a string, and translated as this: $SelectedIDs = array($SelectedIDs); // or $SelectedIDs = array('12,4,1,4'); Which produces an index array with one value ([0] => "12,4,1,4"). Which doesn't work with my in_array statement (12 is not equal to 12,4,1,4 so it always returns false).

However, if I use 'explode' it would produce an array such as: ([0] => "12", [1] =>"4" ....). Which when using in_array would give me my boolean value of TRUE (e.g. 12=12).

To be safe, you can also convert the needle element of in_array to a string. So you would end up with this: $SelectedIDs = explode(",",$SelectedIDs); if (in_array(strval($IDtoCheck), $SelectedIDs)) { echo 'success'; } else { echo 'not present'; }

//note the strval() around $IDtoCheck which you might want to play around with or remove

#php #mysql #arrays

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