Initial Import
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+<td><h1>Code Igniter User Guide Version 1.4.0</h1></td>
+<td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</a></td>
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+<a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
+<a href="../index.html">User Guide Home</a> ›
+Form Helper
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+<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="www.codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
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+<!-- START CONTENT -->
+<div id="content">
+
+
+<h1>Form Helper</h1>
+
+<p>The Form Helper file contains functions that assist in working with forms.</p>
+
+
+<h2>Loading this Helper</h2>
+
+<p>This helper is loaded using the following code:</p>
+<code>$this->load->helper('form');</code>
+
+<p>The following functions are available:</p>
+
+
+
+<h2>form_open()</h2>
+
+<p>Creates an opening form tag with a base URL <strong>built from your config preferences</strong>. It will optionally let you
+add form attributes and hidden input fields.</p>
+
+<p>The main benefit of using this tag rather than hard coding your own HTML is that it permits your site to be more portable
+in the event your URLs ever change.</p>
+
+<p>Here's a simple example:</p>
+
+<code>echo form_open('email/send');</code>
+
+<p>The above example would create a form that points to your base URL plus the "email/send" URI segments, like this:</p>
+
+<code><form method="post" action="http:/www.your-site.com/index.php/email/send" /></code>
+
+<h4>Adding Attributes</h4>
+
+<p>Attributes can be added by passing an associative array to the second parameter, like this:</p>
+
+<code>
+$attributes = array('class' => 'email', 'id' => 'myform');<br />
+<br />
+echo form_open('email/send', $attributes);</code>
+
+<p>The above example would create a form similar to this:</p>
+
+<code><form method="post" action="http:/www.your-site.com/index.php/email/send" class="email" id="myform" /></code>
+
+<h4>Adding Hidden Input Fields</h4>
+
+<p>Hidden fields can be added by passing an associative array to the third parameter, like this:</p>
+
+<code>
+$hidden = array('username' => 'Joe', 'member_id' => '234');<br />
+<br />
+echo form_open('email/send', '', $hidden);</code>
+
+<p>The above example would create a form similar to this:</p>
+
+<code><form method="post" action="http:/www.your-site.com/index.php/email/send" class="email" id="myform" /><br />
+<input type="hidden" name="username" value="Joe" /><br />
+<input type="hidden" name="member_id" value="234" /></code>
+
+
+<h2>form_open_multipart()</h2>
+
+<p>This function is absolutely identical to the <dfn>form_open()</dfn> tag above except that it adds a multipart attribute,
+which is necessary if you would like to use the form to upload files with.</p>
+
+<h2>form_hidden()</h2>
+
+<p>Lets you generate hidden input fields. You can either submit a name/value string to create one field:</p>
+
+<code>form_hidden('username', 'johndoe');<br />
+<br />
+// Would produce:<br /><br />
+<input type="hidden" name="username" value="johnodoe" /></code>
+
+<p>Or you can submit an associative array to create multiple fields:</p>
+
+<code>$data = array(<br />
+ 'name' => 'John Doe',<br />
+ 'email' => 'john@some-site.com',<br />
+ 'url' => 'http://www.some-site.com'<br />
+ );<br />
+<br />
+echo form_hidden($data);<br />
+<br />
+// Would produce:<br /><br />
+<input type="hidden" name="name" value="John Doe" /><br />
+<input type="hidden" name="email" value="john@some-site.com" /><br />
+<input type="hidden" name="url" value="http://www.some-site.com" /></code>
+
+
+
+
+<h2>form_input()</h2>
+
+<p>Lets you generate a standard text input field. You can minimally pass the field name and value in the first
+and second parameter:
+
+<code>echo form_input('username', 'johndoe');</code>
+
+<p>Or you can pass an associative array containing any data you wish your form to contain:</p>
+
+<code>$data = array(<br />
+ 'name' => 'username',<br />
+ 'id' => 'username',<br />
+ 'value' => 'johndoe',<br />
+ 'maxlength' => '100',<br />
+ 'size' => '50',<br />
+ 'style' => 'width:50%',<br />
+ );<br />
+<br />
+echo form_input($data);<br />
+<br />
+// Would produce:<br /><br />
+<input type="text" name="username" id="username" value="johndoe" maxlength="100" size="50" style="width:50%" /></code>
+
+<p>If you would like your form to contain some additional data, like JavaScript, you can pass it as a string in the
+third parameter:
+
+<code>$js = 'onClick="some_function()"';<br />
+<br />
+echo form_input('username', 'johndoe', $js);</code>
+
+<h2>form_password()</h2>
+
+<p>This function is identical in all respects to the <dfn>form_input()</dfn> function above
+except that is sets it as a "password" type.</p>
+
+<h2>form_upload()</h2>
+
+<p>This function is identical in all respects to the <dfn>form_input()</dfn> function above
+except that is sets it as a "file" type, allowing it to be used to upload files.</p>
+
+<h2>form_textarea()</h2>
+
+<p>This function is identical in all respects to the <dfn>form_input()</dfn> function above
+except that it generates a "textarea" type. Note: Instead of the "maxlength" and "size" attributes in the above
+example, you will instead specify "rows" and "cols".</p>
+
+
+<h2>form_dropdown()</h2>
+
+<p>Lets you create a standard drop-down field. The first parameter will contain the name of the field,
+the second parameter will contain an associative array of options, and the third parameter will contain the
+value you wish to be selected. Example:
+
+<code>$options = array(<br />
+ 'small' => 'Small Shirt',<br />
+ 'med' => 'Medium Shirt',<br />
+ large' => 'Large Shirt',<br />
+ 'xlarge' => 'Extra Large Shirt',<br />
+ );<br />
+<br />
+echo form_dropdown('shirts', $options, 'large');<br />
+<br />
+// Would produce:<br /><br />
+
+<select name="shirts"><br />
+<option value="small">Small Shirt</option><br />
+<option value="med">Medium Shirt</option><br />
+<option value="large" selected>Large Shirt</option><br />
+<option value="xlarge">Extra Large Shirt</option><br />
+</select></code>
+
+
+<p>If you would like the opening <select> to contain additional data, like JavaScript, you can pass it as a string in the
+fourth parameter:
+
+<code>$js = 'onChange="some_function()"';<br />
+<br />
+echo form_dropdown('shirts', $options, 'large', $js);</code>
+
+
+<h2>form_checkbox()</h2>
+
+<p>Lets you generate a checkbox field. Simple example:
+
+
+<code>echo form_checkbox('newsletter', 'accept', TRUE);<br />
+<br />
+// Would produce:<br />
+<br />
+<input type="checkbox" name="newsletter" value="accept" checked="checked" /></code>
+
+<p>The third parameter contains a boolean TRUE/FALSE to determine whether the box should be checked or not.</p>
+
+<p>Similar to the other form functions in this helper, you can also pass an array of attributes to the function:</p>
+
+<code>$data = array(<br />
+ 'name' => 'newsletter',<br />
+ 'id' => 'newsletter',<br />
+ 'value' => 'accept',<br />
+ 'checked' => TRUE,<br />
+ 'style' => 'margin:10px',<br />
+ );<br />
+<br />
+echo form_checkbox($data);<br />
+<br />
+// Would produce:<br /><br />
+<input type="checkbox" name="newsletter" id="newsletter" value="accept" checked="checked" style="margin:10px" /></code>
+
+<p>As with other functions, if you would like the tag to contain additional data, like JavaScript, you can pass it as a string in the
+fourth parameter:
+
+<code>$js = 'onClick="some_function()"';<br />
+<br />
+echo echo form_checkbox('newsletter', 'accept', TRUE, $js)</code>
+
+
+<h2>form_radio()</h2>
+<p>This function is identical in all respects to the <dfn>form_checkbox()</dfn> function above except that is sets it as a "radio" type.</p>
+
+
+<h2>form_submit()</h2>
+
+<p>Lets you generate a standard submit button. Simple example:</p>
+
+<code>echo form_submit('mysubmit', 'Submit Post!');<br />
+<br />
+// Would produce:<br />
+<br />
+<input type="submit" name="mysubmit" value="Submit Post!" /></code>
+
+<p>Similar to other functions, you can submit an associative array in the first parameter if you prefer to set your own attributes.
+The third parameter lets you add extra data to your form, like JavaScript.</p>
+
+
+<h2>form_close()</h2>
+
+<p>Produces a closing </form> tag. The only advantage to using this function is it permits you to pass data to it
+which will be added below the tag. For example:</p>
+
+<code>$string = "</div></div>";<br />
+<br />
+echo form_close($string);<br />
+<br />
+// Would produce:<br />
+<br />
+</form><br />
+</div></div></code>
+
+
+
+
+
+<h2>form_prep()</h2>
+
+<p>Allows you to safely use HTML and characters such as quotes within form elements without breaking out of the form. Consider this example:</p>
+
+<code>$string = 'Here is a string containing <strong>"quoted"</strong> text.';<br />
+<br />
+<input type="text" name="myform" value="<var>$string</var>" /></code>
+
+<p>Since the above string contains a set of quotes it will cause the form to break.
+The form_prep function converts HTML so that it can be used safely:</p>
+
+<code><input type="text" name="myform" value="<var><?php echo form_prep($string); ?></var>" /></code>
+
+<p class="important"><strong>Note:</strong> If you use any of the form helper functions listed in this page the form
+values will be prepped automatically, so there is no need to call this function. Use it only if you are
+creating your own form elements.</p>
+
+
+
+
+</div>
+<!-- END CONTENT -->
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