array-diff | Compute a change report from two arrays | Data Manipulation library

How could I check if a table (as array) contains all the keys of another table? Something like array_diff_key in PHP: https://www.php.net/manual/fr/function.array-diff-key.php

This function should return, for example, ["firstLevel"]["e"] because this element doesn't exist in tblTwo:

I'm struggling with the array_diff function and another solutions for my problem but nothing gives me the desired effect..

I have two multidimensional arrays (the nested depth not known) that returned from database and will encode and decode to JSON.

The arrays looks like this:

Here is an example from PHP documentation about array_diff_assoc.

In this example you see the "a" => "green" pair is present in both arrays and thus it is not in the output from the function. Unlike this, the pair 0 => "red" is in the output because in the second argument "red" has key which is 1.

...

I am trying to compare two arrays and display the values that do not match.

Using jQuery, I have this:

I have an excel spreadsheet with 50 rows of comma-delimited data. The number of features contained within the comma-delimited data increases from bottom to top i.e row 50 (the last row) always has the fewest delimiters, and row 1 (the first row) always has the most delimiters. The number of features increases randomly, and each feature can be either unique or duplicated. Either multiple or single features can be added to the string on each row. The features are placed randomly into the previous rows' comma-delimited string i.e they can be placed into the middle of the string on the previous row, or at the beginning or the end of the previous string. If there are multiple added to a row, they may not be placed together. For example:

I was trying to filter date from a form down to only what a user has changed, and started using array_filter as is it seemed to do exactly what I wanted. I tested a few forms and ran into this unexpected behavior. When the "new" value is 1, it is not detected by array_diff. Also unexpected when running this on 3v4l.org, was that the foreach loop was actually faster than array_filter while returning the expected result. I've read the man-page for the functions and understand that it does a string comparison, but all array values are strings to start with so I wouldn't expect it to be a type conversion issue.

I've solved my initial issue and will gladly use the faster foreach loop, but I am interested if anyone can explain why this works this way.

https://3v4l.org/1JggJ

I'm tryin to get a list of controller files

How can I remove values from an array that are in another array?

For example if I have these two arrays:

I have a quick question about finding the difference between two arrays. I found a chunk of JavaScript code that does what I want here and modified it a bit:

JS