Condition is not strictly checked on options-general.php file

[rakibwordpress]

In options-general.php file it is 0 is being compared with another variable which is $current_offset. As 0 is numeric value this needs to be compared.

Trac ticket:

[hellofromTonya]

Hello @rakibwordpress,

Welcome back to WordPress Core's Trac!

I'm doing some triage for open tickets against trunk to see if the defect was introduced in the 6.2.0 cycle. For this one, the code is from 3.0.0, introduced via [12507] / #11558. Changing the Version number.

Also a note for consideration:
Will $current_offset always be an integer 0? Or could it be a string '0'? The current code will type juggle to compare the values without comparing the data types.

What I'm wondering (haven't looked deeply into it):
Is there a strict requirement that 0 must be an integer data type?

If no, then === could cause a backwards-compatibility issue or break in the code when it's a string 0.

[SergeyBiryukov]

Replying to hellofromTonya:

Also a note for consideration:
Will $current_offset always be an integer 0? Or could it be a string '0'? The current code will type juggle to compare the values without comparing the data types.

This gets even more interesting, as the value can also be float or false, via wp_timezone_override_offset() hooked to pre_option_gmt_offset in wp-includes/default-filters.php.