How to fix the „Fatal error: Uncaught Error: [] operator not supported for strings“ error?

And again an error that can occur in combination with a PHP conversion. This does not occur explicitly only with WordPress, also Joomla and Drupal are affected. Generally a missing initialization of an array is the origin of this error.

Solution: Below are several variants and their solutions.

$data[] = '<script type="text/javascript">' . NL;

change to

$data = [];
$data[] = '<script type="text/javascript">' . NL;

Alternatively also

$data = array();
$data[] = '<script type="text/javascript">' . NL;

Missing the definition for

$section_style         = '';

this must be changed to

$section_style         = [];

If the error occurs in this combination

self::$arrMetaBoxes[] = $box;

the variable must also be defined here

self::$arrMetaBoxes = [];
self::$arrMetaBoxes[] = $box;
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  • Developed 2023
  • CMS WordPress
  • Status Completed

Just a Web-Developer

Creating a developer’s own website is always a big challenge. You want to integrate all the cool features and show all your skills. Therefore, it is rather called here to make cutbacks and to put the information in the foreground. I hope this is halfway successful here.
To add value, I’ve taken the „Helpful Code Snippets“ element form my old website and integrated a search function for them.

  • Developed 2022
  • CMS WordPress
  • Status Completed

Tatort Ruhrpott

A few years ago I had the idea for a photo project. I wanted to photograph crime scenes from the Ruhr region and show how these places look today. During the Corona Pandemic 2021, I started taking the photos and at the beginning of 2022, I started implementing the corresponding website.

  • Developed 2018
  • CMS WordPress
  • Status Completed

CMS Geek

CMS Geek was a website project that I started in 2018 and was supposed to introduce users to the functions of WordPress through explanatory videos. In addition to a blog that informed about the latest news about WordPress and Joomla, there were also helpful code solutions to common WordPress, html and CSS problems.

Due to the lack of time to produce more explainer videos, I discontinued this project in spring 2023. I have taken over the code snippets for Just-a-Web-Developer, updated them and will continue to expand them.