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<?php var_export( preg_filter('/💩/u', 'poop', "Mondays are 💩, Tuesdays are 💩, and so on!", 1, $count) ); echo "\n---\ncount: $count\n===\n"; var_export( preg_filter('/💩/u', 'poop', "shiitake", 1, $count) ); echo "\n---\ncount: $count";
Output for git.master, git.master_jit, rfc.property-hooks
'Mondays are poop, Tuesdays are 💩, and so on!' --- count: 1 === NULL --- count: 0

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