php - PHP - Reference to Array - how to?

Question

I want to do something like this:

$myArray = array(
'1' => array('2' => array('3' => 'Test'))
);

$changeIt = $myArray['1']['2']['3'];
$changeIt = 'Changed Test';

// $myArray['1']['2']['3'] is now "Changed Test"

Are there ways to do this ?

Answer 1

你可以这样做：

$myArray = array(
'1' => array('2' => array('3' => 'Test'))
);

$myArray['1']['2']['3'] = &$changeIt;//reference
$changeIt = 'Changed Test'; 
echo  $myArray['1']['2']['3']; //Changed Test

$changeIt = 'Another test';
echo $myArray['1']['2']['3']; //Another test

Answer 2

当您编写 $variable = array[key][key]... 时，您将数组的值传递给变量。如果要更改数组本身的值，则需要这样做：

$myArray = array(
'1' => array('2' => array('3' => 'Test'))
);

$myArray['1']['2']['3'] = 'Changed Test';

print_r($myArray);