As already described in the comments, many WordPress Gutenberg plugins do not use the strict JSON format as WordPress prescribes… (and poorly documented) So it comes to two problems: Sometimes the data is in a JSON format, which parse_blocks() cannot read. If no change is made here, for example, the value attr will be NULL … Read more
The comments and answers are correct, it is no JSON but indeed a serialized array. The reason you’re having trouble unserializing it is because of the quotes inside the serialized data. David Walsh wrote a neat article about this. The problem is that you can’t simply go into the database and remove these single quotes … Read more
bloginfo echos its result, this is why your attempt to “get the value” and manipulate it results in nothing, as no value is actually being returned. If you want to get the relevant value you should use get_bloginfo instead
Just few notes here: We have to be careful using % within sprintf() to avoid confusion with the placeholders. Try to remove the CSS styles. It’s sometimes easier to use the # or ~ delimiters in regular expressions, instead of the / delimiter. Since you have the (players.brightcove.net/) as the first match, it might not … Read more