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-rw-r--r--user_guide_src/source/libraries/uri.rst273
1 files changed, 149 insertions, 124 deletions
diff --git a/user_guide_src/source/libraries/uri.rst b/user_guide_src/source/libraries/uri.rst
index bb959b002..1256afdef 100644
--- a/user_guide_src/source/libraries/uri.rst
+++ b/user_guide_src/source/libraries/uri.rst
@@ -2,187 +2,212 @@
URI Class
#########
-The URI Class provides functions that help you retrieve information from
+The URI Class provides methods that help you retrieve information from
your URI strings. If you use URI routing, you can also retrieve
information about the re-routed segments.
.. note:: This class is initialized automatically by the system so there
is no need to do it manually.
-$this->uri->segment(n)
-======================
+***************
+Class Reference
+***************
-Permits you to retrieve a specific segment. Where n is the segment
-number you wish to retrieve. Segments are numbered from left to right.
-For example, if your full URL is this::
+.. class:: CI_URI
- http://example.com/index.php/news/local/metro/crime_is_up
+ .. method:: segment($n[, $no_result = NULL])
-The segment numbers would be this:
+ :param int $n: Segment index number
+ :param mixed $no_result: What to return if the searched segment is not found
+ :returns: mixed
-#. news
-#. local
-#. metro
-#. crime_is_up
+ Permits you to retrieve a specific segment. Where n is the segment
+ number you wish to retrieve. Segments are numbered from left to right.
+ For example, if your full URL is this::
-By default the function returns NULL if the segment does not
-exist. There is an optional second parameter that permits you to set
-your own default value if the segment is missing. For example, this
-would tell the function to return the number zero in the event of
-failure::
+ http://example.com/index.php/news/local/metro/crime_is_up
- $product_id = $this->uri->segment(3, 0);
+ The segment numbers would be this:
-It helps avoid having to write code like this::
+ #. news
+ #. local
+ #. metro
+ #. crime_is_up
- if ($this->uri->segment(3) === FALSE)
- {
- $product_id = 0;
- }
- else
- {
- $product_id = $this->uri->segment(3);
- }
+ The optional second parameter defaults to NULL and allows you to set the return value
+ of this method when the requested URI segment is missing.
+ For example, this would tell the method to return the number zero in the event of failure::
-$this->uri->rsegment(n)
-=======================
+ $product_id = $this->uri->segment(3, 0);
-This function is identical to the previous one, except that it lets you
-retrieve a specific segment from your re-routed URI in the event you are
-using CodeIgniter's :doc:`URI Routing <../general/routing>` feature.
+ It helps avoid having to write code like this::
-$this->uri->slash_segment(n)
-=============================
+ if ($this->uri->segment(3) === FALSE)
+ {
+ $product_id = 0;
+ }
+ else
+ {
+ $product_id = $this->uri->segment(3);
+ }
-This function is almost identical to $this->uri->segment(), except it
-adds a trailing and/or leading slash based on the second parameter. If
-the parameter is not used, a trailing slash added. Examples::
+ .. method:: rsegment($n[, $no_result = NULL])
- $this->uri->slash_segment(3);
- $this->uri->slash_segment(3, 'leading');
- $this->uri->slash_segment(3, 'both');
+ :param int $n: Segment index number
+ :param mixed $no_result: What to return if the searched segment is not found
+ :returns: mixed
-Returns:
+ This method is identical to ``segment()``, except that it lets you retrieve
+ a specific segment from your re-routed URI in the event you are
+ using CodeIgniter's :doc:`URI Routing <../general/routing>` feature.
-#. segment/
-#. /segment
-#. /segment/
+ .. method:: slash_segment($n[, $where = 'trailing'])
-$this->uri->slash_rsegment(n)
-==============================
+ :param int $n: Segment index number
+ :param string $where: Where to add the slash ('trailing' or 'leading')
+ :returns: string
-This function is identical to the previous one, except that it lets you
-add slashes a specific segment from your re-routed URI in the event you
-are using CodeIgniter's :doc:`URI Routing <../general/routing>`
-feature.
+ This method is almost identical to ``segment()``, except it
+ adds a trailing and/or leading slash based on the second parameter.
+ If the parameter is not used, a trailing slash added. Examples::
-$this->uri->uri_to_assoc(n)
-=============================
+ $this->uri->slash_segment(3);
+ $this->uri->slash_segment(3, 'leading');
+ $this->uri->slash_segment(3, 'both');
-This function lets you turn URI segments into and associative array of
-key/value pairs. Consider this URI::
+ Returns:
- index.php/user/search/name/joe/location/UK/gender/male
+ #. segment/
+ #. /segment
+ #. /segment/
-Using this function you can turn the URI into an associative array with
-this prototype::
+ .. method:: slash_rsegment($n[, $where = 'trailing'])
- [array]
- (
- 'name' => 'joe'
- 'location' => 'UK'
- 'gender' => 'male'
- )
+ :param int $n: Segment index number
+ :param string $where: Where to add the slash ('trailing' or 'leading')
+ :returns: string
-The first parameter of the function lets you set an offset. By default
-it is set to 3 since your URI will normally contain a
-controller/function in the first and second segments. Example::
+ This method is identical to ``slash_segment()``, except that it lets you
+ add slashes a specific segment from your re-routed URI in the event you
+ are using CodeIgniter's :doc:`URI Routing <../general/routing>`
+ feature.
- $array = $this->uri->uri_to_assoc(3);
+ .. method:: uri_to_assoc([$n = 3[, $default = array()]])
- echo $array['name'];
+ :param int $n: Segment index number
+ :param array $default: Default values
+ :returns: array
-The second parameter lets you set default key names, so that the array
-returned by the function will always contain expected indexes, even if
-missing from the URI. Example::
+ This method lets you turn URI segments into and associative array of
+ key/value pairs. Consider this URI::
- $default = array('name', 'gender', 'location', 'type', 'sort');
+ index.php/user/search/name/joe/location/UK/gender/male
- $array = $this->uri->uri_to_assoc(3, $default);
+ Using this method you can turn the URI into an associative array with
+ this prototype::
-If the URI does not contain a value in your default, an array index will
-be set to that name, with a value of FALSE.
+ [array]
+ (
+ 'name' => 'joe'
+ 'location' => 'UK'
+ 'gender' => 'male'
+ )
-Lastly, if a corresponding value is not found for a given key (if there
-is an odd number of URI segments) the value will be set to FALSE
-(boolean).
+ The first parameter lets you set an offset, which defaults to 3 since your
+ URI will normally contain a controller/method pair in the first and second segments.
+ Example::
-$this->uri->ruri_to_assoc(n)
-==============================
+ $array = $this->uri->uri_to_assoc(3);
+ echo $array['name'];
-This function is identical to the previous one, except that it creates
-an associative array using the re-routed URI in the event you are using
-CodeIgniter's :doc:`URI Routing <../general/routing>` feature.
+ The second parameter lets you set default key names, so that the array
+ returned will always contain expected indexes, even if missing from the URI.
+ Example::
-$this->uri->assoc_to_uri()
-============================
+ $default = array('name', 'gender', 'location', 'type', 'sort');
+ $array = $this->uri->uri_to_assoc(3, $default);
-Takes an associative array as input and generates a URI string from it.
-The array keys will be included in the string. Example::
+ If the URI does not contain a value in your default, an array index will
+ be set to that name, with a value of NULL.
- $array = array('product' => 'shoes', 'size' => 'large', 'color' => 'red');
+ Lastly, if a corresponding value is not found for a given key (if there
+ is an odd number of URI segments) the value will be set to NULL.
- $str = $this->uri->assoc_to_uri($array);
+ .. method:: ruri_to_assoc([$n = 3[, $default = array()]])
- // Produces: product/shoes/size/large/color/red
+ :param int $n: Segment index number
+ :param array $default: Default values
+ :returns: array
-$this->uri->uri_string()
-=========================
+ This method is identical to ``uri_to_assoc()``, except that it creates
+ an associative array using the re-routed URI in the event you are using
+ CodeIgniter's :doc:`URI Routing <../general/routing>` feature.
-Returns a string with the complete URI. For example, if this is your
-full URL::
+ .. method:: assoc_to_uri($array)
- http://example.com/index.php/news/local/345
+ :param array $array: Input array of key/value pairs
+ :returns: string
-The function would return this::
+ Takes an associative array as input and generates a URI string from it.
+ The array keys will be included in the string. Example::
- news/local/345
+ $array = array('product' => 'shoes', 'size' => 'large', 'color' => 'red');
+ $str = $this->uri->assoc_to_uri($array);
-$this->uri->ruri_string()
-==========================
+ // Produces: product/shoes/size/large/color/red
-This function is identical to the previous one, except that it returns
-the re-routed URI in the event you are using CodeIgniter's :doc:`URI
-Routing <../general/routing>` feature.
+ .. method:: uri_string()
-$this->uri->total_segments()
-=============================
+ :returns: string
-Returns the total number of segments.
+ Returns a string with the complete URI. For example, if this is your full URL::
-$this->uri->total_rsegments()
-==============================
+ http://example.com/index.php/news/local/345
-This function is identical to the previous one, except that it returns
-the total number of segments in your re-routed URI in the event you are
-using CodeIgniter's :doc:`URI Routing <../general/routing>` feature.
+ The method would return this::
-$this->uri->segment_array()
-============================
+ news/local/345
-Returns an array containing the URI segments. For example::
+ .. method:: ruri_string()
- $segs = $this->uri->segment_array();
+ :returns: string
- foreach ($segs as $segment)
- {
- echo $segment;
- echo '<br />';
- }
+ This method is identical to ``uri_string()``, except that it returns
+ the re-routed URI in the event you are using CodeIgniter's :doc:`URI
+ Routing <../general/routing>` feature.
-$this->uri->rsegment_array()
-=============================
+ .. method:: total_segments()
-This function is identical to the previous one, except that it returns
-the array of segments in your re-routed URI in the event you are using
-CodeIgniter's :doc:`URI Routing <../general/routing>` feature.
+ :returns: int
+
+ Returns the total number of segments.
+
+ .. method:: total_rsegments()
+
+ :returns: int
+
+ This method is identical to ``total_segments()``, except that it returns
+ the total number of segments in your re-routed URI in the event you are
+ using CodeIgniter's :doc:`URI Routing <../general/routing>` feature.
+
+ .. method:: segment_array()
+
+ :returns: array
+
+ Returns an array containing the URI segments. For example::
+
+ $segs = $this->uri->segment_array();
+
+ foreach ($segs as $segment)
+ {
+ echo $segment;
+ echo '<br />';
+ }
+
+ .. method:: rsegment_array()
+
+ :returns: array
+
+ This method is identical to ``segment_array()``, except that it returns
+ the array of segments in your re-routed URI in the event you are using
+ CodeIgniter's :doc:`URI Routing <../general/routing>` feature. \ No newline at end of file