一个容易忽略的小错误,你曾经犯过没?
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发布: 2016-07-25 09:09:23
foreach 数组 值修改
-
/**
- * 注意foreach取值的差异
- */
- $arr = array(1,2,3,4);
-
- echo "foreach遍历数组1:
";
- foreach($arr as $val) {
- $val = $val*2;
- }
-
- var_dump($arr);
-
- echo "
foreach遍历数组2: ";
- foreach($arr as &$val) {
- $val = $val*2;
- }
-
- var_dump($arr);
- /*end of php*/
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