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<?php $word = "word,!pineapple--pizza"; $revd = preg_replace_callback('#([A-Za-z]+)#', 'strrev', $word); var_dump($revd);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: strrev(): Argument #1 ($string) must be of type string, array given in /in/JI7vJ:4 Stack trace: #0 [internal function]: strrev(Array) #1 /in/JI7vJ(4): preg_replace_callback('#([A-Za-z]+)#', 'strrev', 'word,!pineapple...') #2 {main} thrown in /in/JI7vJ on line 4
Process exited with code 255.

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