Collection::getOne

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Collection::getOne — Get one document

说明

public Document mysql_xdevapi\Collection::getOne ( string $id )

This is a shortcut for Collection.find("_id = :id").bind("id", id).execute().fetchOne();.

参数

id: The document ID in the collection.

返回值

The collection object, or NULL if the ID does not match a document.

范例

Example #1 mysql_xdevapi\Collection::getOne() example


<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@host");

$schema = $session->getSchema('test');
$coll   = $schema->getCollection('test_collection');

$coll->add('{"_id": "1", "name": "Marco",      "age": 19, "job": "Programmatore"}')->execute();
$coll->add('{"_id": "2", "name": "Lonardo",    "age": 59, "job": "Paninaro"}')->execute();
$coll->add('{"_id": "3", "name": "Riccardo",   "age": 27, "job": "Cantante"}')->execute();
$coll->add('{"_id": "4", "name": "Carlotta",   "age": 23, "job": "Programmatrice"}')->execute();
$coll->add('{"_id": "5", "name": "Carlo",      "age": 25, "job": "Programmatore"}')->execute();

print_r( $coll->getOne(3) );
print_r( $coll->getOne(5) );
?>

以上例程的输出类似于：

Array
(
    [_id] => 3
    [age] => 27
    [job] => Cantante
    [name] => Riccardo
)
Array
(
    [_id] => 5
    [age] => 25
    [job] => Programmatore
    [name] => Carlo
)