Remove one collection document

# Collection::removeOne

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Collection::removeOne — Remove one collection document

### 説明

public mysql_xdevapi\Collection::removeOne ( string `$id` ) : mysql_xdevapi\Result

Remove one document from the collection with the correspending ID. This is a shortcut for `Collection.remove("_id = :id").bind("id", id).execute()`.

### パラメータ

`id`

  The ID of the collection document to remove. Typically this is the _id that was generated by MySQL Server when the record was added.

### 返り値

A Result object that can be used to query the number of affected items or the number warnings generated by the operation.

### 例

例1 mysql_xdevapi\Collection::removeOne() example

`<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$session->sql("DROP DATABASE IF EXISTS addressbook")->execute();
$session->sql("CREATE DATABASE addressbook")->execute();
$schema = $session->getSchema("addressbook");
$collection = $schema->createCollection("people");
$result = $collection->add('{"name": "Alfred", "age": 18, "job": "Butler"}')->execute();
// Normally the _id is known by other means,
// but for this example let's fetch the generated id and use it
$ids = $result->getGeneratedIds();
$alfred_id = $ids[0];
$result = $collection->removeOne($alfred_id);
if(!$result->getAffectedItemsCount()) {
echo "Alfred with id $alfred_id was not removed.";
} else {
echo "Goodbye, Alfred, you can take _id $alfred_id with you.";
}
?>`

上の例の出力は、 たとえば以下のようになります。

    Goodbye, Alfred, you can take _id 00005b6b536100000000000000cb with you.