Author: Ipstenu (Mika Epstein)

Google Advertising Experiments

In the time since I’ve gone back to Google Adsense, I’ve had issues with some of their ads. Mostly religion and politics. Big shocker, right? Every once in a while, Google suggest I allow those ads:

Consider allowing ads from sensitive categories to increase auction pressure and improve performance.

I usually discard the suggestion, but this time they tried something new to me.

… you can allow these ads now, or run an experiment to help you decide.

Experiment?

There are only two types of experiments right now. One is ad units, where you can adjust templates and ad sizes. The other is what I’m doing, allowing and blocking ads. I clicked on the experiment button, and it set up an A/B test for me, tracking the clicks of each version of my site, to see if anyone actually clicks on those ads.

Initially there was an option to automatically pick the best one, but I don’t know if I want to. I do know that I want to actually see if anyone who reads my sites wants to see political ads.

The reason I’d blocked them is they were showing right-wing crazy people on my sites, and I’m not that person. They were showing ads I would deem offensive (and you have to work hard to offend me) so instead of reading every single ad, I decided to block all of them, assuming I wasn’t hurting my income too much.

After this experiment, I’ll circle back and make a more informed decision. I wish there were more things I could experiment on, like specific ads in specific locations, but this ability to just see if the ads are clicked at all is a nice start for a free product.

15 June, 2016
Debugging Unexpected Output
It’s going to happen one day. You’re going to get that weird error when you activate your plugin to test it and you will have no idea what it means.

What error?

Unexpected output.

The problem is WordPress doesn’t tell you what did it, where, or why, not even if you have debug turned on. You do have debug turned on, right? Well I was stumped on this one. I checked all my PHP calls to make sure I didn’t have whitespace, I looked for any files that were accidentally saved UTF-8, and I checked and double checked my diffs between the good and bad versions.

What I ended up doing was writing a function that saved the error and output it.
```
/* For debugging only */
if (defined('WP_DEBUG') && true === WP_DEBUG) { 
    function myplugin_activated_plugin_error() {
        update_option( 'myplugin_error',  ob_get_contents() );
    }
    function myplugin_deactivated_plugin_error() {
        delete_option( 'myplugin_error' );
    }
    add_action( 'activated_plugin', 'myplugin_activated_plugin_error' );
    add_action( 'deactivated_plugin', 'myplugin_deactivated_plugin_error' );
    
	function myplugin_message_plugin_error() {
	    ?>
	    <div class="notice notice-error">
	        <p><?php echo get_option( 'myplugin_error' ); ?></p>
	    </div>
	    <?php
		}
	if( get_option( 'myplugin_error' ) ) {
		add_action( 'admin_notices', 'myplugin_message_plugin_error' );	
	}
}
```
That results in a pretty kind of output:

I like to use the pretty display so I can easily read what, exactly I messed up and how.
13 June, 2016
So Take an Upgrade, Maria!

A year ago I asked how do we solve a DB like Maria, and my friend James and I had a good laugh at the long list of issues.

It’s been a year.

I’ve upgraded to PHP 7.

It’s time.

What about Oracle vs Google?

Oh you heard about that? Google won a case against Oracle about GPL code in Android which I want to be really happy about, but it illustrates a major flaw in the judicial system. To whit: The player with the deepest pockets wins.

That case about Java though, not MySQL, which has been a long standing issue with the Open Source Community. The summary? Well it’s kind of like Prohibition. They can try to outlaw it, but we’re going to do our own thing. Which is where MariaDB comes in. It was a fork of MySQL, made in order to stay free and open. I strongly support open source software and so I change to MariaDB.

What Are The Issues?

There aren’t as many for MySQL 5.6 vs MariaDB 10.x as I’d thought. In looking at that, I determined it wouldn’t really impact my sites or setup. In fact, I was certain none of it would be an issue.

How to Upgrade?

I’m on WHM, so first I made a backup: /usr/local/cpanel/bin/backup --force

Then I went into WHM and said “Upgrade Maria!”

I picked the interactive upgrade since I wanted to see what it was doing. Step one went rather quickly and updated everything. It asked me to check my compiled software (which meant two non-WordPress sites that historically act odd when I upgrade). Once that was done, I clicked ‘next’ and was told I didn’t need to do anything else…

Now what?

I ran off to GTmetrix and checked my sites. I had two that were PHP 7 and they had no real change. I then changed another one to PHP 7 and Maria and checked it, and got bigger gains. Speed was up and everything, code wise, appeared to work as needed.

It was entirely a non-event.

10 June, 2016
EasyApache 4
While we use Ubuntu and Debian things at work, I have a CentOS server that is (as of today) on CentOS 7. Which means not only is it weird and uses yum, but it has cPanel and WHM installed.

Over the last year or so, cPanel has been working on EasyApache 4 (EA 4). EasyApache is their … easy way to manage Apache and upgrade things. It’s an interface to help make things like your LAMP stack easier to comprehend, and it’s actually pretty nice. EA 3 has been around for a while, and it has serious limitations. Like you have to re-run EasyApache to upgrade PHP (always annoying), and you can’t have multiple versions of PHP. That means when you upgrade PHP to 5.6, everyone is upgraded to 5.6, and damned be the conflicts.

This … was a problem.

I have some older code that can use 5.6 but I’ve not been able to fully test it on 7. And I want 7. You don’t even know.

The actual upgrade process is remarkably painless. I had two errors, one of which was my own doing (don’t try to use opcache if you don’t have opcache installed…) and one was math related. The majority of my settings ported over painlessly.

AH00316: WARNING: MaxRequestWorkers of 40 is not an integer multiple of ThreadsPerChild of 25, decreasing to nearest multiple 25, for a maximum of 1 servers.

Obviously the fix there was to change MaxRequestWorkers to 50.

The interface itself is much nicer. It’s a modern design that is easy to look at with whitespace and tabbing that is natural. The only thing I didn’t like was I couldn’t tell it ‘Install PHP 7 and pick the same options as PHP 5.6 please.’ I ended up copying down what I’d selected for PHP 5.6 and then manually reproducing.

The provisioning process took a little getting used to, after years of EA 3, but once I had used it a couple times, it felt natural. This can be said of all things. Embrace change, right? It’s also faster, which is very welcome. The longest part is the review process, where it checks for conflicts. This used to happen ‘inline’ with the old deploy, so moving it out just changes the when. I found I preferred it, since I didn’t think “And I’m done!” I knew I couldn’t go forward.

Initially it installed suphp. I didn’t notice that’s what the default was and found all sorts of errors because of permissions. Errors like this:
```
SoftException in Application.cpp:255: File "/home/public_html/index.php" is writeable by group
SoftException in Application.cpp:613: Directory "/home/public_html/gallery" is writeable by group
```
I actually knew the fix for this was to run the following in my public_html folder:
```
find . -type f -name '*.php' -exec chmod 644 {} \;
find . -type d -exec chmod 755 {} \;
```
And yes, that solved everything. I was logged in as ~~Ms. Groves~~ root anyway, so I bounced through my users and ran it.

But… did I want to stay on suphp? Turns out EA 4 only supports FastCGI with the FastCGI Process Manager (PHP-FPM), and while I’ve been using that for a while (instead of the dread mod_php). The problem there is that suPHP or CGI PHP handlers don’t support opcache. That meant I either had to suck it up and do the manual install for FastCGI or I could wait for v58 of WHM, which will have a UI.

I opted to wait and stay on suPHP right now. The domains on my site are pretty fast, thanks to the SSD and a well optimized server. Load time did increase, I won’t lie, but it was pretty negligible. I don’t think it’ll really hurt things at this moment. I did some quick tests on GTmetrix and found my load time for sites on PHP 7 actually decreased.

And that’s why I wanted PHP 7. It’s just faster.
8 June, 2016
Is This A Good Name For Your Project?
If the answer to any of the following is not a ‘yes’ then no, you should not use the name for your project.

Again, every answer here should be yes.
1. Did you Google the name?
2. Did you check if the domain name was available?
3. Did you make sure no one else is using it for a similar project?
4. Did you check for trademarks and copyright conflicts?
5. Did you check it against a five year old and made sure they don’t giggle?
Congratulations! You Have a Good Name!

Maybe.

I do a lot of arguing with people over the idea of ‘how’ to name a project, because people want to make add-ons

For example, if you have written an add-on plugin for Microsoft Word, you can’t name your project “Microsoft Word Super Snazzy Map Add-On” but you can name it “Super Snazzy Map Add-On for Microsoft Word.”

Using a name like “My Product for Other Product” is something I consider common sense. Consider the example of Keurig. If you made an eco-friendly brew cup, you could market it “EcoBrew Pod for Keurig” but you could NOT attempt to market it as “Keurig EcoBrew Pod.” The latter implies a direct relationship to Keurig and may be against the law in some countries.

Being Original Is Hard

I don’t mean to dismiss this. It’s hard to come up with a name that is original, descriptive, and unique. It gets harder and harder every day. Consider that a number of today’s companies seem to have ripped their logo out of a 1989 design book

The Beats logo on the right compared to one found in the 1989 design book Tweeted by Spencer Chen.

Now we have long accepted in logos the limitation of language, letters, and combinations. It’s probably not theft, but it’s something you have to be aware of when a new project is named. Similarly, we accept the fact that naming something that is at once unique while still displaying your own flare is problematic.

I can’t offer you an answer that will fit everything, but I can offer you this. When you pick a name for your project, regardless of if you’re the big fish or the little one, it’s your responsibility to check if something even possibly related is already there. If you happen to name things at the same time, that’s an honest mistake, but if you know better going in, don’t be the bad guy.

What About The Bad Guy?

What happens, though, if a year or three down the line, you get an email telling you that your product is infringing on trademarks?

You have two choices:
1. Fight
2. Flight
There are weird issues in the US with Generic Trademarks. Like did you know heroin, thermos, and aspirin are genericized? That means we use the words ubiquitously to mean the general concept of ‘a thermos bottle’ or ‘that horrible drug’ without reference to the trademark holders.

That said, there are terms that are not generic, and yet we use them similarly. Band-Aid, Kleenex, Post-It, and Google. Yes. Google. Google actually has gone to the point of downranking you for terms like ‘googling it’ because they want to protect their brands.

So what happens when you get that email from Johnson & Johnson, telling you that your product “Mika’s Band-Aid for WordPress” is a trademark violation?

Fight or flight.

You can argue that no one would logically think that ‘band-aid’ in this case would ever be confused for their product. Or you can say “Oops, my bad. I was totally trying to leverage the term band-aid.” You can also ask them “Are there circumstances in which I can rebrand this so as to make it clear I’m not intending to violate your trademark while not losing the ground I’ve made with my product?”

I will suggest, if you chose to fight, to get a lawyer who specializes in trademark law.
6 June, 2016
SSD: An Anecdotal Journey

After I upgraded to Ogra, I noticed that my server’s load stats were a little janky. They were pretty high, actually, bouncing between .5 and 2 all the time. Now this isn’t really all that bad, but as I looked at my server, I realized I was paying a little more than I needed, since I’d cut down on space by offloading backups better.

This matters because I needed only 50G of diskspace (I only use about 30 right now for all the sites), and while I did want 2G of RAM, I could easily switch to an SSD on my hosting plan. It was cheaper, and it was as easy as pressing a button. I’ve never really gotten to play with SSD for this site, so I thought “what the hell” and pressed the button.

A weekend later…

The five minute load average shows a massive drop. It’s incredible. The red and blank spots are where I was running the actual migration process and disabled monitoring for a bit. Literally all I did was reboot the server and the move it to SSD. That’s it. It’s insane when you think about it.

By the way, I saved disk space by offloading the backups to Amazon S3. Amazon costs me about $3 a month, and while I detest their interface, the integration is built into WHM. I have an open feature requests to allow arbitrary CEPH destinations as backup so please vote for that if you like the idea.

SSDs had the bonus of changing my backup from taking 2 or 3 hours to taking 15 minutes.

Anecdotally SSD is an incredible improvement of the old bog hard drives.

3 June, 2016