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cjhaas blog

Basically a place that Chris can post solutions to problems so he can easily find them later

cjhaas blog

Basically a place that Chris can post solutions to problems so he can easily find them later

Uncategorized

Google open redirect

Posted on June 22, 2026June 22, 2026 By [email protected]

I remember a couple of things from my earliest days when I learned about security. So why in 2026 does Google allow this? https://meet.google.com/linkredirect?dest=https://vendiadvertising.com Okay, I know why, but I don’t agree. Our take on this is that tooltips are not a reliable security indicator, and can be tampered with…

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Uncategorized

How to use AI to write code

Posted on October 7, 2025October 7, 2025 By [email protected]

I’ve been living in Claude lately, just to get a feel for things, and the following is some of things that I’ve learned so far. Brownfield For this discussion, I’m calling brownfield code anything legacy, including something from six months ago that you personally wrote but don’t remember how it…

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Doctrine

Doctrine/Symfony MariaDB DSN connection string

Posted on November 29, 2023November 29, 2023 By [email protected]

When connecting to MySQL/MariaDB with Doctrine you need to specify the version number of the server in the serverVersion query string parameter. In the past it was as simple as serverVersion=mariadb-10.5.10 and things just worked. Recent updates to Doctrine’s DBAL have started to throw warnings that version 4 will require…

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Uncategorized

Creating a portable copy of pdftotext from source

Posted on September 27, 2023 By [email protected]

Recently we had a need to use pdftotext on a server that we couldn’t install packages on, so we decided to download the source for Xpdf and build our own copy. This is generally pretty easy, however by default it requires shared libraries to also be installed on the system…

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Gravity Forms

Gravity Forms shortcode getting extra line breaks when used with ACF

Posted on July 28, 2023July 28, 2023 By [email protected]

ACF apparently expands shortcodes before returning content, which means if you attempt to run it through the_content filter, any line breaks will get hit by wpautop. We fought and fought and fought, moving filter orders around, removing filters, etc., and finally decided to not fight WordPress, but instead change Gravity…

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PHP

The magic PHP function: test_data()

Posted on June 1, 2023June 1, 2023 By [email protected]

STOP USING IT!!!!! If you don’t know this function, let me show it to you: “But it sanitizes my input” – yes, destructively. I’ll let the trim function pass, although that depends on the data you are sourcing. Always delay escaping until you need to render something. Besides being a…

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WordPress

How to move a WordPress database

Posted on May 26, 2023May 26, 2023 By [email protected]

I often see people asking how to move a WordPress database between servers, and it usually seems like they’re doing it the hard way. I move sites between domains, from PROD to dev, dev to UAT, and so on, and this is how I’ve been doing it for years, 100%…

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WordPress

WordPress – write to .htaccess

Posted on April 7, 2023April 7, 2023 By [email protected]

If you ever have a need to programmatically write to the .htaccess file, WordPress has a built-in function insert_with_markers to do just that. Calling that function will give you the added benefit of adding “BEGIN” and “END” markers which makes it easier to read. There’s also a sibling function, extract_from_markers,…

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SSH

Living the proxy life

Posted on April 4, 2023 By [email protected]

For local development, we use the Symfony binary which allows us to both use regular host names such as example.wip (work in progress), as well as a TLS certificate so we can use HTTPS. Very awesome. After setup, you just need to add a proxy pac file to your browser/OS…

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Ramblings

Messing with the song algorithms

Posted on December 2, 2022December 2, 2022 By [email protected]

Sometimes you need to introduce some new songs into your music service’s algorithms to spice things up. Here’s my 10 for 2022: 1.) My Pal Foot Foot – The Shaggs Arguably one of the worst songs (and albums) that was ever pressed. So bad that it, to a certain degree,…

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Recent Posts

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  • Doctrine/Symfony MariaDB DSN connection string
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  • Gravity Forms shortcode getting extra line breaks when used with ACF

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