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CollectionFind::offset — Skip given number of elements to be returned
$position
) : mysql_xdevapi\CollectionFindSkip (offset) these number of elements that otherwise would be returned by the find operation. Use with the limit() method.
Defining an offset larger than the result set size results in an empty set.
positionNumber of elements to skip for the limit() operation.
A CollectionFind object that can be used for additional processing.
Example #1 mysql_xdevapi\CollectionFind::offset() 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");
$create = $schema->createCollection("people");
$create
->add('{"name": "Alfred", "age": 18, "job": "Butler"}')
->execute();
$create
->add('{"name": "Reginald", "age": 42, "job": "Butler"}')
->execute();
// ...
$collection = $schema->getCollection("people");
$result = $collection
->find()
->sort('age asc')
->offset(1)
->limit(1)
->execute();
var_dump($result->fetchAll());
?>
以上例程的输出类似于：
array(1) {
[0]=>
array(4) {
["_id"]=>
string(28) "00005b6b536100000000000000f3"
["age"]=>
int(42)
["job"]=>
string(6) "Butler"
["name"]=>
string(8) "Reginald"
}
}