1 2 3 4 5 6 7 8 9 10
<? $arr = array(0=>'a',1=>'b',2=>'c',3=>'d'); foreach($arr as $key => $value){ $value = 'a'; } var_dump($arr); ?>
array(4) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" [3]=> string(1) "d" }