<?php
function setElements(&$a, array $path = [], $values = [])
{
if (!is_array($path)) {
$path = explode($path[0], substr($path, 1));
}
$path = "[ '" . join("' ][ '", $path) . "' ]";
$code =<<<CODE
if(!isset(\$a{$path})){
\$a{$path} = [];
}
return \$a{$path}[] = \$values;
CODE;
return eval($code);
}
$a = [];
setElements($a, [1,2], 'xxx');
setElements($a, [1,2,3], 233);
setElements($a, [1,2,4], 'AAA');
setElements($a, [1,2,3,4], 555);
print_r($a);
输出
Array
(
[1] => Array
(
[2] => Array
(
[0] => xxx
[3] => Array
(
[0] => 233
[4] => Array
(
[0] => 555
)
)
[4] => Array
(
[0] => AAA
)
)
)
)
你应该在这里检查 http://sandbox.onlinephpfunctions.com/