数组与字符串
数组基础
- 索引数组、关联数组、二维数组
- 数组声明与初始化
- 数组遍历与访问
$arr = [1, 2, 3];
$assoc = ["name" => "Tom", "age" => 18];
$matrix = [[1,2],[3,4]];
foreach ($arr as $v) { echo $v; }
foreach ($assoc as $k => $v) { echo "$k=$v "; }$arr = [1, 2, 3];
$assoc = ["name" => "Tom", "age" => 18];
$matrix = [[1,2],[3,4]];
foreach ($arr as $v) { echo $v; }
foreach ($assoc as $k => $v) { echo "$k=$v "; }