What's the benefit of function refrence?
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by SpawnCxy
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Published on 2010-03-16T11:31:16Z
Indexed on
2010/03/16
11:36 UTC
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php
When I reading the code of CodeIgniter,I found some functions written as follows:
function &get_instance()
{
global $CI, $OBJ;
if (is_object($CI))
{
return $CI;
}
return $OBJ->load;
}
I can understand variable refrence,but I can hardly get this through.Is it necessary to use this function style?And any benefit?
Thanks.
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