[4] cannot pass null to trim function in php 8.1

[alikon]

Pull Request for Issue # .

Summary of Changes

set a default value

Testing Instructions

open admin

Actual result BEFORE applying this Pull Request

Expected result AFTER applying this Pull Request

no Exception

[HLeithner]

please stop adding ?? '' blindly everywhere you seeing this error.

For example in this case we take the variable 2 lines above, so being sure that a string is returned should bin in this line.

Beside that trim($xxx ?? ''); looks ugly and doesn't explain why we expect an empty variable at this point in the code. Please a proper if statement above and explain with a comment why it could be NULL (if it's not logical)

[alikon]

sound better now ?

[HLeithner]

thanks

[Krshivam25]

I have tested this item ✅ successfully on fb7a29d

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/36281.}

[xillibit]

I have tested this item ✅ successfully on fb7a29d

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/36281.}

[Quy]

RTC

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/36281.}

[wilsonge]

Thanks!