ArrayIterator
PHP Manual

ArrayIterator::offsetSet

(PHP 5 >= 5.0.0, PHP 7)

ArrayIterator::offsetSetSet value for an offset

说明

public void ArrayIterator::offsetSet ( string $index , string $newval )

Sets a value for a given offset.

Warning

本函数还未编写文档,仅有参数列表。

参数

index

The index to set for.

newval

The new value to store at the index.

返回值

没有返回值。

参见

User Contributed Notes

shiranai7 at NOSPAM dot hotmail dot NOSPAM dot com 05-Dec-2011 09:52
The $index argument seems to be NULL for append operations, e.g.:

<?php

// example extension class
class Test extends ArrayIterator
{
    public function
offsetSet($index, $newval)
    {
        echo
'Test::offsetSet('.var_export($index, true).', '.var_export($newval, true).")\n";
    }
}

// test
$i = new Test;
$i[] = 'append a value';

?>

The result is:

Test::offsetSet(NULL, 'append a value')

ArrayIterator
PHP Manual