Remove collection documents

# Collection::remove

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Collection::remove — Remove collection documents

### 説明

public mysql_xdevapi\Collection::remove ( string `$search_condition` ) : mysql_xdevapi\CollectionRemove

Remove collections that meet specific search conditions. Multiple operations are allowed, and parameter binding is supported.

### パラメータ

`search_condition`

  Must be a valid SQL expression used to match the documents to modify. This expression might be as simple as `TRUE`, which matches all documents, or it might use functions and operators such as `'CAST(_id AS SIGNED) >= 10'`, `'age MOD 2 = 0 OR age MOD 3 = 0'`, or `'_id IN ["2","5","7","10"]'`.

### 返り値

If the operation is not executed, then the function will return a Remove object that can be used to add additional remove operations.

If the remove operation is executed, then the returned object will contain the result of the operation.

### 例

例1 mysql_xdevapi\Collection::remove() 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");
$collection->add('{"name": "Alfred", "age": 18, "job": "Butler"}')->execute();
$collection->add('{"name": "Bob", "age": 19, "job": "Painter"}')->execute();
// Remove all painters
$collection
->remove("job in ('Painter')")
->execute();
// Remove the oldest butler
$collection
->remove("job in ('Butler')")
->sort('age desc')
->limit(1)
->execute();
// Remove record with lowest age
$collection
->remove('true')
->sort('age desc')
->limit(1)
->execute();
?>`