SplObjectStorage::offsetGet() - 数据结构

是丫丫呀2年前 (2023-11-21)阅读数 30#技术干货

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SplObjectStorage::offsetGet()

(PHP 5 >= 5.3.0, PHP 7)

Returns the data associated with an object

说明

publicSplObjectStorage::offsetGet(object $object) : mixed

Returns the data associated with an object in the storage.

参数

$object

The object to look for.

返回值

The data previously associated with the object in the storage.

错误／异常

Throws UnexpectedValueException when $object could not be found.

范例

SplObjectStorage::offsetGet()example

SplObjectStorage::offsetGet() - 数据结构

以上例程的输出类似于：

string(5) "hello"
NULL

参见

SplObjectStorage::offsetSet() Associates data to an object in the storage
SplObjectStorage::offsetExists() Checks whether an object exists in the storage
SplObjectStorage::offsetUnset() Removes an object from the storage

The performance of SplObjectStorage in PHP7.0.7 has boosted a lot.
SplObjectStorage
double(1.3110690116882)
[object_hash => value]
double(2.4147419929504)

SplObjectStorage::offsetGet() can become EXTREMELY slow depending on the associated data (PHP 5.6).

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