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<?php echo preg_replace_callback( '\d+', '123abc456def789', 'incr' ); function incr($args){ var_dump($args); }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: preg_replace_callback(): Argument #2 ($callback) must be a valid callback, function "123abc456def789" not found or invalid function name in /in/IZn9m:3 Stack trace: #0 /in/IZn9m(3): preg_replace_callback('\\d+', '123abc456def789', 'incr') #1 {main} thrown in /in/IZn9m on line 3
Process exited with code 255.

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