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<?php function x($x=null){ var_dump(func_num_args(), func_get_args()); } x(); x(null); x(1);
Output for git.master, git.master_jit, rfc.property-hooks
int(0) array(0) { } int(1) array(1) { [0]=> NULL } int(1) array(1) { [0]=> int(1) }

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