ArrayObject::getArrayCopy

(PHP 5, PHP 7, PHP 8)

ArrayObject::getArrayCopy — Creates a copy of the ArrayObject

说明

public ArrayObject::getArrayCopy(): array

Exports the ArrayObject to an array.

参数

此函数没有参数。

返回值

Returns a copy of the array. When the ArrayObject refers to an object, an array of the properties of that object will be returned.

范例

示例 #1 ArrayObject::getArrayCopy() example


<?php
// Array of available fruits
$fruits = array("lemons" => 1, "oranges" => 4, "bananas" => 5, "apples" => 10);

$fruitsArrayObject = new ArrayObject($fruits);
$fruitsArrayObject['pears'] = 4;

// create a copy of the array
$copy = $fruitsArrayObject->getArrayCopy();
print_r($copy);

?>

以上例程会输出：

Array
(
    [lemons] => 1
    [oranges] => 4
    [bananas] => 5
    [apples] => 10
    [pears] => 4
)

add a note

User Contributed Notes 5 notes

down

Ivo von Putzer ¶

10 years ago


If you did something like this to make your constructor multidimensional capable you will have some trouble using getArrayCopy to get a plain array straight out of the method:
<?php
public function __construct( $array = array(), $flags = 2 )
{
    // let’s give the objects the right and not the inherited name
    $class = get_class($this);

    foreach($array as $offset => $value)
        $this->offsetSet($offset, is_array($value) ? new $class($value) : $value);

    $this->setFlags($flags); 
}
?>

That’s the way I solved it:

<?php
public function getArray($recursion = false) 
{
    // just in case the object might be multidimensional
    if ( $this === true)
        return $this->getArrayCopy();

    return array_map( function($item){
        return is_object($item) ? $item->getArray(true) : $item;
    }, $this->getArrayCopy() );
}
?>

Hope this was useful!

down

jlshor at buffalo dot edu ¶

5 years ago


Is there a difference between casting to an array and using this function?

For instance, if we have:
$arrayObject = new ArrayObject([1, 2, 3]);

Is there a difference between these:
$array = (array) $arrayObject;
vs
$array = $arrayObject->getArrayCopy();

If not, is there any scenario where they would produce different results, or do they produce the result in different ways?

down

sorcerer ¶

5 years ago


When I used print_r ($fruitsArrayObject) instead of print_r ($copy), i.e. ignoring the getArrayCopy() step, I still got the same output. Why?

down

spidgorny at gmail dot com ¶

5 years ago


<?php
$data = $likeArray->getArrayCopy();
?>
will NOT be magically called if you cast to array. Although I've expected it.
<?php
$nothing = (array)$likeArray;
?>
Here, $data != $nothing.

down

php at webflips dot net ¶

8 years ago


"When the ArrayObject refers to an object an array of the public properties of that object will be returned."

This description does not seem to be right:

<?php
class A
{
    public $var = 'var';
    protected $foo = 'foo';
    private $bar = 'bar';
}

$o = new ArrayObject(new A());
var_dump($o->getArrayCopy());

/*
Dumps:

array(3) {
  ["var"]=>
  string(3) "var"
  ["*foo"]=>
  string(3) "foo"
  ["Abar"]=>
  string(3) "bar"
}
*/
?>

So it does not only include the public properties.

add a note

官方地址：https://www.php.net/manual/en/arrayobject.getarraycopy.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络数据库 JAVA 面试 NoSQL C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 adodb手册 ADORecordSet对象 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet mysql面试题 PHP json解析（json_decode）页面工具 [原创]诡异的php-fpm超时问题 php中几种注释规范纯php实现DES以及TripleDES加密算法 php 修改图片大小支持php7的性能采集扩展 PHP mkdir()写出来的权限与mode值不符合

略微加速

PHP官方手册 - 互联网笔记

ArrayObject::getArrayCopy

说明

参数

返回值

范例

User Contributed Notes 5 notes