Array access is class implementation that allows the class to behave as an array - this means to provide data through [] operator.
Questions tagged [arrayaccess]
57 questions
28
votes
5 answers
In C++11 and beyond does std::string::operator[] do bounds checking?
I have seen many times that std::string::operator[] does not do any bounds checking. Even What is the difference between string::at and string::operator[]?, asked in 2013, the answers say that operator[] does not do any bounds checking.
My issue…
NathanOliver
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19
votes
5 answers
Adding integers to arrays in C++?
Consider:
int sum(const int numbers[], const int size){
if (size == 0)
return 0;
else
return numbers[0] + sum(numbers+1, size-1);
}
This is a simple recursive function from MIT 6.096 for adding an arbitrary number of…
Krzysztof Podsiadło
- 317
- 2
- 6
18
votes
2 answers
PHP Type hinting to allow Array or ArrayAccess
Is it possible to allow an Array or an object that implements ArrayAccess?
For example:
class Config implements ArrayAccess {
...
}
class I_Use_A_Config
{
public function __construct(Array $test)
...
}
I want to be able to pass in…
Supericy
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17
votes
4 answers
How to check for arrayness in PHP?
The best I could come up is
function is_array_alike($array) {
return is_array($array) || (is_object($array) && $array instanceof ArrayAccess && $array instanceof Traversable && $array instanceof Serializable && $array instanceof…
chx
- 11,270
- 7
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- 129
16
votes
1 answer
Arrayaccess and native php array functions
Is there any way to use array_merge(), array_pop(), .. functions to work with ArrayAccess?
Since now i've tried Iterate interface and __set_state() magic method with no success.
Error that is given: array_replace_recursive() [
Kristian
- 3,283
- 3
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- 52
16
votes
2 answers
ArrayAccess in PHP -- assigning to offset by reference
First, a quote from the ole' manual on ArrayAccess::offsetSet():
This function is not called in assignments by reference and otherwise indirect changes to array dimensions overloaded with ArrayAccess (indirect in the sense they are made not by…
Dan Lugg
- 20,192
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13
votes
6 answers
inheritance of ArrayAccess: Uncaught ErrorException: Collection::offsetExists($key)
NB: Local server PHP Version 8.1.4, laravel project inside composer.json file have "php": "^7.2.5", version & "laravel/framework": "^7.0"
PHP Fatal error: During inheritance of ArrayAccess: Uncaught ErrorException: Return type of…
Alal Sardar
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- 1
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12
votes
1 answer
Is there subscript syntax to extract a diagonal from a 2D Array?
I mostly can follow the syntax to 'drill down/slice' into an array with multiple dimensions (and flattening) on the docs page. A very cool feature. For example given:
my @a=[[1,2,3],
[4,5,6],
[7,8,9]];
I can select column 2 of the…
drclaw
- 2,463
- 9
- 23
10
votes
3 answers
PHP 5.4's simplified string offset reading
As many of you already know, PHP 5.4 alpha has been released. I have a question regarding the following.
Simplified string offset reading.
$str[1][0] is now a legal construct.
How exactly does $str[1][0] work?
EDIT:…
webjawns.com
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8
votes
2 answers
Mocking/Stubbing an Object of a class that implements arrayaccess in PHPUnit
Here is the constructor of the class I am writing a test suite for (it extends mysqli):
function __construct(Config $c)
{
// store config file
$this->config = $c;
// do mysqli constructor
parent::__construct(
…
AndyPerlitch
- 4,539
- 5
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- 43
6
votes
3 answers
array_values doesn't work with ArrayAccess object
array_values() doesn't work with ArrayAccess object.
neither does array_keys()
why?
if I can access $object['key'] I should be able to do all kind of array operations
thelolcat
- 10,995
- 21
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- 102
6
votes
1 answer
Using SplObjectStorage as a data map, can you use a mutable array as the data?
In the following code:
$storage = new \SplObjectStorage();
$fooA = new \StdClass();
$fooB = new \StdClass();
$storage[$fooA] = 1;
$storage[$fooB] = array();
$storage[$fooA] = 2;
$storage[$fooB][] = 'test';
I would expect $storage[$fooA] to be 1,…
Joe Lencioni
- 10,231
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4
votes
1 answer
php 8.1 - return type deprecated in older script
Trying to update to php 8.1 and noticed this deprecated notice showing up in the error logs I'd like to take care of.
[14-Feb-2022 14:48:25 UTC] PHP Deprecated: Return type of TLDExtractResult::offsetExists($offset) should either be compatible with…
user756659
- 3,372
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4
votes
1 answer
PHP 5.6: ArrayAccess: Function isset calls offsetGet and causes undefined index notice
I wrote simple PHP class that implements ArrayAccess Interface:
class MyArray implements ArrayAccess
{
public $value;
public function __construct($value = null)
{
$this->value = $value;
}
public function…
Filip Š
- 746
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4
votes
3 answers
php Converting an object implementing ArrayAccess in array
When you implement the _toString method on a class, you are able to convert the object in string
$string =(string) $object
Is there an equivalent for converting in array
$array=(array) $object
From what I have tested, with this code, the…
Arnaud
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