[wp-trac] [WordPress Trac] #42264: Systematic way of dealing with compat code and polyfills

[WordPress Trac]

#42264: Systematic way of dealing with compat code and polyfills
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 Reporter:  schlessera      |       Owner:
     Type:  enhancement     |      Status:  new
 Priority:  normal          |   Milestone:  Awaiting Review
Component:  Bootstrap/Load  |     Version:
 Severity:  normal          |  Resolution:
 Keywords:                  |     Focuses:
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Comment (by ayeshrajans):

 👍👌 for `extension_loaded` calls to detect availability. That really
 makes the code more readable too.
 <bike-shedding>
 There are few arguments in outside PHP communities to use
 `function_exists` vs `extension_loaded` - `function_exists` is tiny bit
 faster and functions can be disabled in `php.ini` where `extension_loaded`
 would happily return true, but `function_exists` doesn't.

 </bike-shedding>

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Ticket URL: <https://core.trac.wordpress.org/ticket/42264#comment:4>
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