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Alex Rivera
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Say I've defined a function in PHP, and the last parameter is passed by reference. Is there any way I can make that optional? How can I tell if it's set? I've never worked with pass-by-reference in PHP, so there may be a goofy mistake below, but here's an example: $foo; function bar($var1,&$reference) { if(isset($reference)) do_stuff(); else return FALSE; } bar("variable");//reference is not set bar("variable",$foo);//reference is set
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