Stop Using Pseudo-Types

Re:Stop Using Pseudo-Types by joe_hoyle on Monday February 02, 2026 @08:36AM (#46855879)

The problem is that first class callables actually makes a new object wrapper for each reference, so trim(…) != trim(…). (It can be true in some cases, it depends if the memory is freed for the first reference).

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Re:Stop Using Pseudo-Types by pwdisswordfishy on Monday February 02, 2026 @10:40AM (#46857212)

And how is Closure::fromCallable('trim') recommended by the article any better in that respect?

    $ php8.4 -r "var_dump(Closure::fromCallable('trim') === Closure::fromCallable('trim'));"
    bool(false)

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Re:Stop Using Pseudo-Types by joe_hoyle on Monday February 02, 2026 @12:06PM (#46858338)

It is not better, this is a problem with the first-class callable syntax altogether.

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