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CollectionFind::sort — Set the sorting criteria
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.
sort_exprOne or more sorting expressions can be provided. The evaluation is from left to right, and each expression is separated by a comma.
A CollectionFind object that can be used to execute the command, or to add additional operations.
示例 #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());
?>以上示例的输出类似于：
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"
}
}