PHP SplObjectStorage unserialize()用法及代碼示例

SplObjectStorage::unserialize()函數是PHP中的內置函數，用於從其序列化字符串表示形式反序列化存儲。

用法:

void SplObjectStorage::unserialize( $serilize )

參數：該函數接受單個參數$serialize，該參數指定存儲的字符串序列化。

返回值：該函數不返回任何值。

以下程序說明了PHP中的SplObjectStorage::unserialize()函數：

程序1:

<?php 
  
$obj1 = new StdClass; 
  
// Create an empty SplObjectStorage 
$gfg1 = new SplObjectStorage(); 
$gfg1[$obj1] = "Geeks"; 
  
// Use unserialize() function 
$gfg1->unserialize($gfg1->serialize()); 
print_r($gfg1); 
  
?>

輸出：

SplObjectStorage Object
(
    [storage:SplObjectStorage:private] => Array
        (
            [00000000494fcd4d000000001f544823] => Array
                (
                    [obj] => stdClass Object
                        (
                        )

                    [inf] => Geeks
                )

            [00000000494fcd4f000000001f544823] => Array
                (
                    [obj] => stdClass Object
                        (
                        )

                    [inf] => Geeks
                )

        )

)

程序2:

<?php 
  
$obj1 = new StdClass; 
$obj2 = new StdClass; 
  
// Create an empty SplObjectStorage 
$gfg1 = new SplObjectStorage(); 
$gfg1[$obj1] = "Geeks"; 
  
// Create an empty SplObjectStorage 
$gfg2 = new SplObjectStorage(); 
$gfg2[$obj1] = "GFG"; 
$gfg2[$obj2] = "GeeksClasses"; 
  
// Use unserialize() function 
$gfg1->unserialize($gfg2->serialize()); 
var_dump(count($gfg1)); 
  
// Use unserialize() function 
$gfg2->unserialize($gfg1->serialize()); 
var_dump(count($gfg2)); 
?>

輸出：

int(3)
int(5)

參考： https://www.php.net/manual/en/splobjectstorage.unserialize.php

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注：本文由純淨天空篩選整理自R_Raj大神的英文原創作品 PHP | SplObjectStorage unserialize() Function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。