<?php class c { var $v = 'none'; } function cf(&$c, $v) { $c->v = $v; } $c = new c(); $c1 = $c; cf($c, '123'); var_dump($c); var_dump($c1); //output php5 //php5 fix output $c1 to '123', $c2 to 'none' //output php4, fix capbility //php4 fix output $c1 to '123', $c2 to 'none'
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