CollectionFind::sort

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CollectionFind::sortSet the sorting criteria

Beschreibung

public mysql_xdevapi\CollectionFind::sort ( string $sort_expr ) : mysql_xdevapi\CollectionFind

Sort the result set by the field selected in the sort_expr argument. The allowed orders are ASC (Ascending) or DESC (Descending). This operation is equivalent to the 'ORDER BY' SQL operation and it follows the same set of rules.

Parameter-Liste

sort_expr

One or more sorting expressions can be provided. The evaluation is from left to right, and each expression is separated by a comma.

R√ľckgabewerte

A CollectionFind object that can be used to execute the command, or to add additional operations.

Beispiele

Beispiel #1 mysql_xdevapi\CollectionFind::sort() 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('job desc''age asc')
  ->
execute();

var_dump($result->fetchAll());
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

array(2) {
  [0]=>
  array(4) {
    ["_id"]=>
    string(28) "00005b6b53610000000000000106"
    ["age"]=>
    int(18)
    ["job"]=>
    string(6) "Butler"
    ["name"]=>
    string(6) "Alfred"
  }
  [1]=>
  array(4) {
    ["_id"]=>
    string(28) "00005b6b53610000000000000107"
    ["age"]=>
    int(42)
    ["job"]=>
    string(6) "Butler"
    ["name"]=>
    string(8) "Reginald"
  }
}
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