Merge pull request #8507 from kenjis/docs-array_helper.rst

docs: improve array_helper.rst

Author: kenjis

user_guide_src/source/helpers/array_helper.rst

@@ -15,6 +15,7 @@ Loading this Helper
 This helper is loaded using the following code:
 
 .. literalinclude:: array_helper/001.php
+        :lines: 2-
 
 Available Functions
 ===================
@@ -29,24 +30,28 @@ The following functions are available:
     :rtype: mixed
 
     This method allows you to use dot-notation to search through an array for a specific-key,
-    and allows the use of a the '*' wildcard. Given the following array:
+    and allows the use of a the ``*`` wildcard. Given the following array:
 
     .. literalinclude:: array_helper/002.php
+        :lines: 2-
 
-    We can locate the value of 'fizz' by using the search string "foo.buzz.fizz". Likewise, the value
-    of baz can be found with "foo.bar.baz":
+    We can locate the value of ``fizz`` by using the search string ``foo.buzz.fizz``. Likewise, the value
+    of ``baz`` can be found with ``foo.bar.baz``:
 
     .. literalinclude:: array_helper/003.php
+        :lines: 2-
 
-    You can use the asterisk as a wildcard to replace any of the segments. When found, it will search through all
+    You can use the asterisk (``*``) as a wildcard to replace any of the segments. When found, it will search through all
     of the child nodes until it finds it. This is handy if you don't know the values, or if your values
     have a numeric index:
 
     .. literalinclude:: array_helper/004.php
+        :lines: 2-
 
-    If the array key contains a dot, then the key can be escaped with a backslash:
+    If the array key contains a dot (``.``), then the key can be escaped with a backslash (``\``):
 
     .. literalinclude:: array_helper/005.php
+        :lines: 2-
 
 .. note:: Prior to v4.2.0, ``dot_array_search('foo.bar.baz', ['foo' => ['bar' => 23]])`` returned ``23``
     due to a bug. v4.2.0 and later returns ``null``.
@@ -73,21 +78,24 @@ The following functions are available:
     from, e.g., the ``find()`` function of a model:
 
     .. literalinclude:: array_helper/006.php
+        :lines: 2-
 
     Now sort this array by two keys. Note that the method supports the dot-notation
     to access values in deeper array levels, but does not support wildcards:
 
     .. literalinclude:: array_helper/007.php
+        :lines: 2-
 
-    The ``$players`` array is now sorted by the 'order' value in each players'
-    'team' subarray. If this value is equal for several players, these players
-    will be ordered by their 'position'. The resulting array is:
+    The ``$players`` array is now sorted by the ``order`` value in each players'
+    ``team`` subarray. If this value is equal for several players, these players
+    will be ordered by their ``position``. The resulting array is:
 
     .. literalinclude:: array_helper/008.php
+        :lines: 2-
 
     In the same way, the method can also handle an array of objects. In the example
-    above it is further possible that each 'player' is represented by an array,
-    while the 'teams' are objects. The method will detect the type of elements in
+    above it is further possible that each ``player`` is represented by an array,
+    while the ``teams`` are objects. The method will detect the type of elements in
     each nesting level and handle it accordingly.
 
 .. php:function:: array_flatten_with_dots(iterable $array[, string $id = '']): array
@@ -101,16 +109,19 @@ The following functions are available:
     as separators for the keys.
 
     .. literalinclude:: array_helper/009.php
+        :lines: 2-
 
     On inspection, ``$flattened`` is equal to:
 
     .. literalinclude:: array_helper/010.php
+        :lines: 2-
 
     Users may use the ``$id`` parameter on their own, but are not required to do so.
     The function uses this parameter internally to track the flattened keys. If users
     will be supplying an initial ``$id``, it will be prepended to all keys.
 
     .. literalinclude:: array_helper/011.php
+        :lines: 2-
 
 .. php:function:: array_group_by(array $array, array $indexes[, bool $includeEmpty = false]): array
 
@@ -126,12 +137,15 @@ The following functions are available:
     The example shows some data (i.e. loaded from an API) with nested arrays.
 
     .. literalinclude:: array_helper/012.php
-    
-    We want to group them first by "gender", then by "hr.department" (max depth = 2).
+        :lines: 2-
+
+    We want to group them first by ``gender``, then by ``hr.department`` (max depth = 2).
     First the result when excluding empty values:
 
     .. literalinclude:: array_helper/013.php
-    
+        :lines: 2-
+
     And here the same code, but this time we want to include empty values:
 
     .. literalinclude:: array_helper/014.php
+        :lines: 2-