@@ -70,25 +70,25 @@ Limitations
7070Consider the following limitations when performing aggregation operations:
7171
7272- Returned documents cannot violate the
73- :manual:`BSON document size limit </reference/limits/#mongodb-limit-BSON-Document-Size>`
74- of 16 megabytes.
73+ :manual:`BSON document size limit </reference/limits/#mongodb-limit-BSON-Document-Size>`
74+ of 16 megabytes.
7575- Pipeline stages have a memory limit of 100 megabytes by default. You can exceed this
76- limit by creating an options array that sets the ``allowDiskUse`` option to ``true``
77- and passing the array to the ``MongoDB\Collection::aggregate()`` method.
76+ limit by creating an options array that sets the ``allowDiskUse`` option to ``true``
77+ and passing the array to the ``MongoDB\Collection::aggregate()`` method.
7878
79- .. important:: $graphLookup Exception
80-
81- The :manual:`$graphLookup
82- </reference/operator/aggregation/graphLookup/>` stage has a strict
83- memory limit of 100 megabytes and ignores the ``allowDiskUse`` option.
79+ .. important:: $graphLookup Exception
80+
81+ The :manual:`$graphLookup
82+ </reference/operator/aggregation/graphLookup/>` stage has a strict
83+ memory limit of 100 megabytes and ignores the ``allowDiskUse`` option.
8484
8585.. _php-aggregation-example:
8686
8787Aggregation Example
8888-------------------
8989
9090.. note::
91-
91+
9292 The examples in this guide use the ``restaurants`` collection in the ``sample_restaurants``
9393 database from the :atlas:`Atlas sample datasets </sample-data>`. To learn how to create a
9494 free MongoDB Atlas cluster and load the sample datasets, see the :atlas:`Get Started with Atlas
@@ -101,30 +101,30 @@ The following code example produces a count of the number of bakeries in each bo
101101of New York. To do so, it uses an aggregation pipeline that contains the following stages:
102102
103103- :manual:`$match </reference/operator/aggregation/match/>` stage to filter for documents
104- in which the ``cuisine`` field contains the value ``'Bakery'``
104+ in which the ``cuisine`` field contains the value ``'Bakery'``
105105
106106- :manual:`$group </reference/operator/aggregation/group/>` stage to group the matching
107- documents by the ``borough`` field, accumulating a count of documents for each distinct
108- value
107+ documents by the ``borough`` field, accumulating a count of documents for each distinct
108+ value
109109
110110.. io-code-block::
111111 :copyable:
112112
113113 .. input:: /includes/aggregation/aggregation.php
114- :start-after: start-match-group
115- :end-before: end-match-group
116- :language: php
117- :dedent:
114+ :start-after: start-match-group
115+ :end-before: end-match-group
116+ :language: php
117+ :dedent:
118118
119119 .. output::
120- :visible: false
120+ :visible: false
121121
122- {"_id":"Brooklyn","count":173}
123- {"_id":"Queens","count":204}
124- {"_id":"Bronx","count":71}
125- {"_id":"Staten Island","count":20}
126- {"_id":"Missing","count":2}
127- {"_id":"Manhattan","count":221}
122+ {"_id":"Brooklyn","count":173}
123+ {"_id":"Queens","count":204}
124+ {"_id":"Bronx","count":71}
125+ {"_id":"Staten Island","count":20}
126+ {"_id":"Missing","count":2}
127+ {"_id":"Manhattan","count":221}
128128
129129Explain an Aggregation
130130~~~~~~~~~~~~~~~~~~~~~~
@@ -147,19 +147,19 @@ from the preceding :ref:`php-aggregation-example`:
147147 :copyable:
148148
149149 .. input:: /includes/aggregation/aggregation.php
150- :start-after: start-explain
151- :end-before: end-explain
152- :language: php
153- :dedent:
150+ :start-after: start-explain
151+ :end-before: end-explain
152+ :language: php
153+ :dedent:
154154
155155 .. output::
156- :visible: false
156+ :visible: false
157157
158- {"explainVersion":"2","queryPlanner":{"namespace":"sample_restaurants.restaurants",
159- "indexFilterSet":false,"parsedQuery":{"cuisine":{"$eq":"Bakery"}},"queryHash":"865F14C3",
160- "planCacheKey":"D56D6F10","optimizedPipeline":true,"maxIndexedOrSolutionsReached":false,
161- "maxIndexedAndSolutionsReached":false,"maxScansToExplodeReached":false,"winningPlan":{
162- ... }
158+ {"explainVersion":"2","queryPlanner":{"namespace":"sample_restaurants.restaurants",
159+ "indexFilterSet":false,"parsedQuery":{"cuisine":{"$eq":"Bakery"}},"queryHash":"865F14C3",
160+ "planCacheKey":"D56D6F10","optimizedPipeline":true,"maxIndexedOrSolutionsReached":false,
161+ "maxIndexedAndSolutionsReached":false,"maxScansToExplodeReached":false,"winningPlan":{
162+ ... }
163163
164164Additional Information
165165----------------------
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