略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: CollectionFind::offset

2024-12-22

CollectionFind::offset

(No version information available, might only be in Git)

CollectionFind::offsetSkip given number of elements to be returned

说明

public mysql_xdevapi\CollectionFind::offset(int $position): mysql_xdevapi\CollectionFind

Skip (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.

参数

position

Number of elements to skip for the limit() operation.

返回值

A CollectionFind object that can be used for additional processing.

范例

示例 #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"
  }
}
add a noteadd a note

User Contributed Notes

There are no user contributed notes for this page.

官方地址:https://www.php.net/manual/en/mysql-xdevapi-collectionfind.offset.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3