PHP如何使用SplObjectStorage addAll()函数？

SplObjectStorage :: addAll()function是PHP中的内置函数, 用于从另一个存储中添加元素。

语法如下：

void SplObjectStorage::addAll( $value )

参数：该函数接受单个参数$值存放需要导入的存储。

返回值：它不返回任何值。

下面的程序说明了SplObjectStorage :: addAll()PHP中的功能：

程序1：

<?php
  
// Declare an empty std class
$obj = new StdClass;
  
// Declare an empty SplObjectStorage
$gfg = new SplObjectStorage();
  
$gfg [ $obj ] = "lsbin" ;
  
$gfg1 = new SplObjectStorage();
$gfg1 ->addAll( $gfg );
  
// Print result added to storage object
echo $gfg1 [ $obj ] . "\n" ;
?>

输出如下：

lsbin

程式2：

<?php
  
// Declare an empty std class
$obj = new StdClass;
$obj2 = new StdClass;
  
// Declare an empty SplObjectStorage
$gfg = new SplObjectStorage();
$gfg [ $obj ] = "lsbin" ;
$gfg [ $obj2 ] = "lsbin2" ;
  
$gfg1 = new SplObjectStorage();
$gfg1 ->addAll( $gfg );
  
// Print result with whole object
print_r( $gfg1 );
?>

输出如下：

SplObjectStorage Object
(
    [storage:SplObjectStorage:private] => Array
        (
            [00000000219a7b260000000055def3bf] => Array
                (
                    [obj] => stdClass Object
                        (
                        )

                    [inf] => lsbin
                )

            [00000000219a7b250000000055def3bf] => Array
                (
                    [obj] => stdClass Object
                        (
                        )

                    [inf] => lsbin2
                )

        )

)

参考： https://www.php.net/manual/en/splobjectstorage.addall.php

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