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Re:Upcoming changes in PHP 7.1 by fredleblanc on Monday May 23, 2016 @07:59AM (#11753271)
Commas are used in PHP as a sequence of things, not multiple options. This single-pipe notation is already established as the further-up comments states.
Re:Upcoming changes in PHP 7.1 by jack9 on Monday May 23, 2016 @10:08AM (#11753928)
> Commas are used in PHP as a sequence of things

Choosing a pipe because it's easier for an obscure language feature, is not least astonishment. Commas are used for lists. The pipe is a bad choice among a nice feature.