Just as you want to filter the rows of data returned in a SELECT query with the equality comparison operator (=), you can also create a conditional filter to test if 2 values are not equal to one another. Learn more in the following article.

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As powerful and useful as the CodeIgniter 4 Query Builder class methods and functions are, there are times when you need to hand-craft your own queries. Perhaps they are complex. Or, you would just rather write the raw SQL. Learn how to safely use the input you need – typically as part of the WHERE clause conditional(s) – using 2 different parameter binding variations with examples in MySQL.

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Hey hey, OpenLampTech is back this week with another packed issue of the best MySQL, PHP, and LAMP stack content I am sharing from the web. Enjoy!

The Newsletter for PHP and MySQL Developers

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In OpenLampTech issue #36, we are looking at articles covering:

• PHP == vs === comparison operators
• MySQL ALTER TABLE
• Installing WordPress in a subdirectory.
• Why developers prefer Linux
• Getting your website ready to win
• And much much more

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Built on time-tested open-source software, the LAMP stack is a popular choice in modern Web Development. Continue reading this OpenLampTech publication report…

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

What is the LAMP stack?

The LAMP stack is a well-established combination of 4 pieces of software that form one of the most robust web application architecture stacks.

LAMP is actually an acronym created from the 1st letter of the name of each of the 4 components it is built from:

1. Linux – The operating system. …

The publication is growing and we are sharing the good stuff in this OpenLampTech newsletter issue. Developer interviews, a curated WordPress resource, and the LAMP stack coverage you expect are all coming at ya in issue #33…

The Newsletter for PHP and MySQL Developers

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In OpenLampTech issue #33, we have great content covering:

• Symfony components
• Is SQL Programming?
• WordPress FSE vs dynamic templating
• CakePHP CRUD
• Linux command-line practice articles
• And, much much more…

I’m sharing another tip for anyone who wants to learn more about MySQL and how to use it. This post covers an example of the differences in columns specified in the WHERE clause but not the SELECT clause and vice-versa.

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There is a whole lot of great PHP, MySQL, and LAMP-stack content in this week’s OpenLampTech newsletter. But, would you expect any less? Me neither. Enjoy this edition and share with others. Thank you for being a dedicated reader!

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One of my students asked how you could get JSON data out in tabular format. I said they should look at Øystein Grøvlen’s JSON_TABLE – Best of Both Worlds blog post from 2018. Unfortunately, the student wanted another example with the Video Store model that we use in class.

For clarity, all path definitions start with a $ followed by other selectors:

• A period followed by a name, such as $.website
• [N] where N is the position in a zero-indexed array
• The .[*] wildcard evaluates all members of an object
• The [*] wildcard evaluates all members of an array
• The prefix and suffix wildcard, **, evaluates to all paths that begin with the named prefix and end with the named suffix

So, here’s a quick supplement to what’s already there. It assumes you created an …

Yesterday, I wrote a blog post that showed you how to write a query returning a JSON structure for a 1:many relationship. The relationship was between the member and contact table. It returns one account_number from the member table and a list of first_name and last_name columns from the contact table in a JSON structure.

One of my students asked why I choose to strip the backslashes with Python, and my reply was the SQL was already complex for most blog readers. The student asked but how would you do it in SQL. OK, that’s a fair question for two reasons. First, you don’t need to do in your local programs because it’ll run faster on the server. Second, if you strip the backslashes you can insert it into a standard JSON column. This blog post will show you how to do both.

You would use three REGEXP_REPLACE function calls, like:

I recently wanted to check all tables’ current AUTO_INCREMENT value (if any) for a database dump structure. I wasn’t sure if a tables’ Data Definition Language (DDL) statement contained the current AUTO_INCREMENT value or not. So after I loaded the dump file, I learned of a query to use and find out…

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