How to change the value of a two-dimensional array in php

How to change the array value in php: 1. Modify the value of the array in the form of "for($i = 0; $i < count(Array()); $i)"; 2. Use The "oreach($users as &$user)" method changes the value of the array.

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PHP Modify the value in the array

①. The two-dimensional array can be modified in the form of for($i = 0; $i < count(Array()); $i)

Example code ：

// 修改 二维数组中的 name为 Getchar
$users = array(
    array('name' => 'GetcharZp', 'age' => 19),
    array('name' => 'Mcx', 'age' => 18)
);
for ($i = 0; $i < count($users); ++ $i) {
    $users[$i][&#39;name&#39;] = &#39;Getchar&#39;;
}
print_r($users);

②. The two-dimensional array can also be modified in the form of foreach($users as &$user)

Instance code

// 修改 二维数组中的 name为 Getchar
$users = array(
    array('name' => 'GetcharZp', 'age' => 19),
    array('name' => 'Mcx', 'age' => 18)
);
foreach ($users as &$user) {
    $user['name'] = 'Getchar';
}
unset($user); // 销毁掉 user 引用
print_r($users);

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