$arr = array(1, 2, 3);
foreach ($arr as $i => &$v) {
$v *= 2;
}
echo join(', ', $arr);
输出：2, 4, 6
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【技巧】foreach中使用引用
 |
The author has 1 post.
|
$arr = array(1, 2, 3);
foreach ($arr as $i => &$v) { $v *= 2; } echo join(', ', $arr); 输出：2, 4, 6 |
