International PHP Conference 2015

MongoCursor::info

(PECL mongo >=1.0.5)

MongoCursor::infoGets information about the cursor's creation and iteration

Descrição

public array MongoCursor::info ( void )

This can be called before or after the cursor has started iterating.

Parâmetros

Esta função não possui parâmetros.

Valor Retornado

Returns the namespace, batch size, limit, skip, flags, query, and projected fields for this cursor. If the cursor has started iterating, additional information about iteration and the connection will be included.

Changelog

Versão Descrição
1.1.0 Added a number of other fields, including id (the cursor id), at (the driver's counter of which document is current), numReturned (the number returned by the server in the current batch), and server (which server the query was sent to—useful in conjunction with Read Preferences.
1.0.10 Added started_iterating field, a boolean indicating if cursor is pre- or post-query.

Exemplos

Exemplo #1 MongoCursor::info() example

<?php
$m 
= new MongoClient();

$cursor $m->test->foo->find(array("x" => 4), array("y" => 0));

echo 
"Before iteration started:\n";
var_dump($cursor->info());

echo 
"\nAfter iteration started:\n";
$cursor->rewind();
var_dump($cursor->info());

?>

O exemplo acima irá imprimir algo similar à:

Before iteration started:
array(8) {
  ["ns"]=>
  string(8) "test.foo"
  ["limit"]=>
  int(0)
  ["batchSize"]=>
  int(0)
  ["skip"]=>
  int(0)
  ["flags"]=>
  int(0)
  ["query"]=>
  array(1) {
    ["x"]=>
    int(4)
  }
  ["fields"]=>
  array(1) {
    ["y"]=>
    int(0)
  }
  ["started_iterating"]=>
  bool(false)
}

After iteration started:
array(15) {
  ["ns"]=>
  string(8) "test.foo"
  ["limit"]=>
  int(0)
  ["batchSize"]=>
  int(0)
  ["skip"]=>
  int(0)
  ["flags"]=>
  int(0)
  ["query"]=>
  array(1) {
    ["x"]=>
    int(4)
  }
  ["fields"]=>
  array(1) {
    ["y"]=>
    int(0)
  }
  ["started_iterating"]=>
  bool(true)
  ["id"]=>
  int(0)
  ["at"]=>
  int(0)
  ["numReturned"]=>
  int(1)
  ["server"]=>
  string(25) "localhost:27017;-;.;26450"
  ["host"]=>
  string(9) "localhost"
  ["port"]=>
  int(27017)
  ["connection_type_desc"]=>
  string(10) "STANDALONE"
}

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