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-<title>URI Class : CodeIgniter User Guide</title>
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-<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
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-<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
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-URI Class
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-
-
-<h1>URI Class</h1>
-
-<p>The URI Class provides functions that help you retrieve information from your URI strings. If you use URI routing, you can
-also retrieve information about the re-routed segments.</p>
-
-<p class="important"><strong>Note:</strong> This class is initialized automatically by the system so there is no need to do it manually.</p>
-
-<h2>$this->uri->segment(<var>n</var>)</h2>
-
-<p>Permits you to retrieve a specific segment. Where <var>n</var> is the segment number you wish to retrieve.
-Segments are numbered from left to right. For example, if your full URL is this:</p>
-
-<code>http://example.com/index.php/news/local/metro/crime_is_up</code>
-
-<p>The segment numbers would be this:</p>
-
-<ol>
-<li>news</li>
-<li>local</li>
-<li>metro</li>
-<li>crime_is_up</li>
-</ol>
-
-<p>By default the function returns FALSE (boolean) if the segment does not exist. There is an optional second parameter that
-permits you to set your own default value if the segment is missing.
-For example, this would tell the function to return the number zero in the event of failure:</p>
-
-<code>$product_id = $this->uri->segment(3, 0);</code>
-
-<p>It helps avoid having to write code like this:</p>
-
-<code>if ($this->uri->segment(3) === FALSE)<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$product_id = 0;<br />
-}<br />
-else<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$product_id = $this->uri->segment(3);<br />
-}<br />
-</code>
-
-<h2>$this->uri->rsegment(<var>n</var>)</h2>
-
-<p>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 <a href="../general/routing.html">URI Routing</a> feature.</p>
-
-
-<h2>$this->uri->slash_segment(<var>n</var>)</h2>
-
-<p>This function is almost identical to <dfn>$this->uri->segment()</dfn>, 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:</p>
-
-<code>$this->uri->slash_segment(<var>3</var>);<br />
-$this->uri->slash_segment(<var>3</var>, 'leading');<br />
-$this->uri->slash_segment(<var>3</var>, 'both');</code>
-
-<p>Returns:</p>
-
-<ol>
-<li>segment/</li>
-<li>/segment</li>
-<li>/segment/</li>
-</ol>
-
-
-<h2>$this->uri->slash_rsegment(<var>n</var>)</h2>
-
-<p>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 <a href="../general/routing.html">URI Routing</a> feature.</p>
-
-
-
-<h2>$this->uri->uri_to_assoc(<var>n</var>)</h2>
-
-<p>This function lets you turn URI segments into and associative array of key/value pairs. Consider this URI:</p>
-
-<code>index.php/user/search/name/joe/location/UK/gender/male</code>
-
-<p>Using this function you can turn the URI into an associative array with this prototype:</p>
-
-<code>[array]<br />
-(<br />
-&nbsp;&nbsp;&nbsp;&nbsp;'name' => 'joe'<br />
-&nbsp;&nbsp;&nbsp;&nbsp;'location' => 'UK'<br />
-&nbsp;&nbsp;&nbsp;&nbsp;'gender' => 'male'<br />
-)</code>
-
-<p>The first parameter of the function lets you set an offset. By default it is set to <kbd>3</kbd> since your
-URI will normally contain a controller/function in the first and second segments. Example:</p>
-
-<code>
-$array = $this->uri->uri_to_assoc(3);<br />
-<br />
-echo $array['name'];
-</code>
-
-
-<p>The second parameter lets you set default key names, so that the array returned by the function will always contain expected indexes, even if missing from the URI. Example:</p>
-
-<code>
-$default = array('name', 'gender', 'location', 'type', 'sort');<br />
-<br />
-$array = $this->uri->uri_to_assoc(3, $default);</code>
-
-<p>If the URI does not contain a value in your default, an array index will be set to that name, with a value of FALSE.</p>
-
-<p>Lastly, if a corresponding value is not found for a given key (if there is an odd number of URI segments) the value will be set to FALSE (boolean).</p>
-
-
-<h2>$this->uri->ruri_to_assoc(<var>n</var>)</h2>
-
-<p>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 <a href="../general/routing.html">URI Routing</a> feature.</p>
-
-
-<h2>$this->uri->assoc_to_uri()</h2>
-
-<p>Takes an associative array as input and generates a URI string from it. The array keys will be included in the string. Example:</p>
-
-<code>$array = array('product' => 'shoes', 'size' => 'large', 'color' => 'red');<br />
-<br />
-$str = $this->uri->assoc_to_uri($array);<br />
-<br />
-// Produces: product/shoes/size/large/color/red
-</code>
-
-
-<h2>$this->uri->uri_string()</h2>
-
-<p>Returns a string with the complete URI. For example, if this is your full URL:</p>
-
-<code>http://example.com/index.php/news/local/345</code>
-
-<p>The function would return this:</p>
-
-<code>news/local/345</code>
-
-
-<h2>$this->uri->ruri_string()</h2>
-
-<p>This function is identical to the previous one, except that it returns the
-re-routed URI in the event you are using CodeIgniter's <a href="../general/routing.html">URI Routing</a> feature.</p>
-
-
-
-<h2>$this->uri->total_segments()</h2>
-
-<p>Returns the total number of segments.</p>
-
-
-<h2>$this->uri->total_rsegments()</h2>
-
-<p>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 <a href="../general/routing.html">URI Routing</a> feature.</p>
-
-
-
-<h2>$this->uri->segment_array()</h2>
-
-<p>Returns an array containing the URI segments. For example:</p>
-
-<code>
-$segs = $this->uri->segment_array();<br />
-<br />
-foreach ($segs as $segment)<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;echo $segment;<br />
-&nbsp;&nbsp;&nbsp;&nbsp;echo '&lt;br />';<br />
-}</code>
-
-<h2>$this->uri->rsegment_array()</h2>
-
-<p>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 <a href="../general/routing.html">URI Routing</a> feature.</p>
-
-
-
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