Removes objects contained in another storage from the current storage

# SplObjectStorage::removeAll

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplObjectStorage::removeAll — Removes objects contained in another storage from the current storage

### 说明

public function SplObjectStorage::removeAll(SplObjectStorage `$storage`): int

Removes objects contained in another storage from the current storage.

### 参数

`storage`

  The storage containing the elements to remove.

### 返回值

Returns the number of remaining objects.

### 示例

示例 #1 SplObjectStorage::removeAll() example

    <?php
    $o1 = new stdClass;
    $o2 = new stdClass;
    $a = new SplObjectStorage();
    $a[$o1] = "foo";

    $b = new SplObjectStorage();
    $b[$o1] = "bar";
    $b[$o2] = "gee";

    var_dump(count($b));
    $b->removeAll($a);
    var_dump(count($b));
    ?>

以上示例的输出类似于：

    int(2)
    int(1)

### 参见

- SplObjectStorage::addAll() - Adds all objects from another storage

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