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<?php $map = []; print "Empty array\n"; var_dump(!isset($map['rollback_action']) || $map['rollback_action'] == 0); $map = false; print "\n\nFalse\n"; var_dump(!isset($map['rollback_action']) || $map['rollback_action'] == 0); $map['rollback_action'] = NULL; print "\n\nNULL value\n"; var_dump(!isset($map['rollback_action']) || $map['rollback_action'] == 0); $map['rollback_action'] = 0; print "\n\n0 value\n"; var_dump(!isset($map['rollback_action']) || $map['rollback_action'] == 0); $map['rollback_action'] = 1; print "\n\n1 value\n"; var_dump(!isset($map['rollback_action']) || $map['rollback_action'] == 0);
Output for git.master, git.master_jit, rfc.property-hooks
Empty array bool(true) False bool(true) Deprecated: Automatic conversion of false to array is deprecated in /in/Lf6NF on line 12 NULL value bool(true) 0 value bool(true) 1 value bool(false)

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