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View File Name : form_helper.php

<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2018, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package	CodeIgniter
 * @author	EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2018, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	https://codeigniter.com
 * @since	Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * CodeIgniter Form Helpers
 *
 * @package		CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		EllisLab Dev Team
 * @link		https://codeigniter.com/user_guide/helpers/form_helper.html
 */

// ------------------------------------------------------------------------

if ( ! function_exists('form_open'))
{
	/**
	 * Form Declaration
	 *
	 * Creates the opening portion of the form.
	 *
	 * @param	string	the URI segments of the form destination
	 * @param	array	a key/value pair of attributes
	 * @param	array	a key/value pair hidden data
	 * @return	string
	 */
	function form_open($action = '', $attributes = array(), $hidden = array())
	{
		$CI =& get_instance();

		// If no action is provided then set to the current url
		if ( ! $action)
		{
			$action = $CI->config->site_url($CI->uri->uri_string());
		}
		// If an action is not a full URL then turn it into one
		elseif (strpos($action, '://') === FALSE)
		{
			$action = $CI->config->site_url($action);
		}

		$attributes = _attributes_to_string($attributes);

		if (stripos($attributes, 'method=') === FALSE)
		{
			$attributes .= ' method="post"';
		}

		if (stripos($attributes, 'accept-charset=') === FALSE)
		{
			$attributes .= ' accept-charset="'.strtolower(config_item('charset')).'"';
		}

		$form = '<form action="'.$action.'"'.$attributes.">\n";

		if (is_array($hidden))
		{
			foreach ($hidden as $name => $value)
			{
				$form .= '<input type="hidden" name="'.$name.'" value="'.html_escape($value).'" />'."\n";
			}
		}

		// Add CSRF field if enabled, but leave it out for GET requests and requests to external websites
		if ($CI->config->item('csrf_protection') === TRUE && strpos($action, $CI->config->base_url()) !== FALSE && ! stripos($form, 'method="get"'))
		{
			// Prepend/append random-length "white noise" around the CSRF
			// token input, as a form of protection against BREACH attacks
			if (FALSE !== ($noise = $CI->security->get_random_bytes(1)))
			{
				list(, $noise) = unpack('c', $noise);
			}
			else
			{
				$noise = mt_rand(-128, 127);
			}

			// Prepend if $noise has a negative value, append if positive, do nothing for zero
			$prepend = $append = '';
			if ($noise < 0)
			{
				$prepend = str_repeat(" ", abs($noise));
			}
			elseif ($noise > 0)
			{
				$append  = str_repeat(" ", $noise);
			}

			$form .= sprintf(
				'%s<input type="hidden" name="%s" value="%s" />%s%s',
				$prepend,
				$CI->security->get_csrf_token_name(),
				$CI->security->get_csrf_hash(),
				$append,
				"\n"
			);
		}

		return $form;
	}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_open_multipart'))
{
	/**
	 * Form Declaration - Multipart type
	 *
	 * Creates the opening portion of the form, but with "multipart/form-data".
	 *
	 * @param	string	the URI segments of the form destination
	 * @param	array	a key/value pair of attributes
	 * @param	array	a key/value pair hidden data
	 * @return	string
	 */
	function form_open_multipart($action = '', $attributes = array(), $hidden = array())
	{
		if (is_string($attributes))
		{
			$attributes .= ' enctype="multipart/form-data"';
		}
		else
		{
			$attributes['enctype'] = 'multipart/form-data';
		}

		return form_open($action, $attributes, $hidden);
	}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_hidden'))
{
	/**
	 * Hidden Input Field
	 *
	 * Generates hidden fields. You can pass a simple key/value string or
	 * an associative array with multiple values.
	 *
	 * @param	mixed	$name		Field name
	 * @param	string	$value		Field value
	 * @param	bool	$recursing
	 * @return	string
	 */
	function form_hidden($name, $value = '', $recursing = FALSE)
	{
		static $form;

		if ($recursing === FALSE)
		{
			$form = "\n";
		}

		if (is_array($name))
		{
			foreach ($name as $key => $val)
			{
				form_hidden($key, $val, TRUE);
			}

			return $form;
		}

		if ( ! is_array($value))
		{
			$form .= '<input type="hidden" name="'.$name.'" value="'.html_escape($value)."\" />\n";
		}
		else
		{
			foreach ($value as $k => $v)
			{
				$k = is_int($k) ? '' : $k;
				form_hidden($name.'['.$k.']', $v, TRUE);
			}
		}

		return $form;
	}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_input'))
{
	/**
	 * Text Input Field
	 *
	 * @param	mixed
	 * @param	string
	 * @param	mixed
	 * @return	string
	 */
	function form_input($data = '', $value = '', $extra = '')
	{
		$defaults = array(
			'type' => 'text',
			'name' => is_array($data) ? '' : $data,
			'value' => $value
		);

		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
	}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_password'))
{
	/**
	 * Password Field
	 *
	 * Identical to the input function but adds the "password" type
	 *
	 * @param	mixed
	 * @param	string
	 * @param	mixed
	 * @return	string
	 */
	function form_password($data = '', $value = '', $extra = '')
	{
		is_array($data) OR $data = array('name' => $data);
		$data['type'] = 'password';
		return form_input($data, $value, $extra);
	}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_upload'))
{
	/**
	 * Upload Field
	 *
	 * Identical to the input function but adds the "file" type
	 *
	 * @param	mixed
	 * @param	string
	 * @param	mixed
	 * @return	string
	 */
	function form_upload($data = '', $value = '', $extra = '')
	{
		$defaults = array('type' => 'file', 'name' => '');
		is_array($data) OR $data = array('name' => $data);
		$data['type'] = 'file';

		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
	}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_textarea'))
{
	/**
	 * Textarea field
	 *
	 * @param	mixed	$data
	 * @param	string	$value
	 * @param	mixed	$extra
	 * @return	string
	 */
	function form_textarea($data = '', $value = '', $extra = '')
	{
		$defaults = array(
			'name' => is_array($data) ? '' : $data,
			'cols' => '40',
			'rows' => '10'
		);

		if ( ! is_array($data) OR ! isset($data['value']))
		{
			$val = $value;
		}
		else
		{
			$val = $data['value'];
			unset($data['value']); // textareas don't use the value attribute
		}

		return '<textarea '._parse_form_attributes($data, $defaults)._attributes_to_string($extra).'>'
			.html_escape($val)
			."

\n"; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_multiselect')) { /** * Multi-select menu * * @param string * @param array * @param mixed * @param mixed * @return string */ function form_multiselect($name = '', $options = array(), $selected = array(), $extra = '') { $extra = _attributes_to_string($extra); if (stripos($extra, 'multiple') === FALSE) { $extra .= ' multiple="multiple"'; } return form_dropdown($name, $options, $selected, $extra); } } // -------------------------------------------------------------------- if ( ! function_exists('form_dropdown')) { /** * Drop-down Menu * * @param mixed $data * @param mixed $options * @param mixed $selected * @param mixed $extra * @return string */ function form_dropdown($data = '', $options = array(), $selected = array(), $extra = '') { $defaults = array(); if (is_array($data)) { if (isset($data['selected'])) { $selected = $data['selected']; unset($data['selected']); // select tags don't have a selected attribute } if (isset($data['options'])) { $options = $data['options']; unset($data['options']); // select tags don't use an options attribute } } else { $defaults = array('name' => $data); } is_array($selected) OR $selected = array($selected); is_array($options) OR $options = array($options); // If no selected state was submitted we will attempt to set it automatically if (empty($selected)) { if (is_array($data)) { if (isset($data['name'], $_POST[$data['name']])) { $selected = array($_POST[$data['name']]); } } elseif (isset($_POST[$data])) { $selected = array($_POST[$data]); } } $extra = _attributes_to_string($extra); $multiple = (count($selected) > 1 && stripos($extra, 'multiple') === FALSE) ? ' multiple="multiple"' : ''; $form = '\n"; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_checkbox')) { /** * Checkbox Field * * @param mixed * @param string * @param bool * @param mixed * @return string */ function form_checkbox($data = '', $value = '', $checked = FALSE, $extra = '') { $defaults = array('type' => 'checkbox', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value); if (is_array($data) && array_key_exists('checked', $data)) { $checked = $data['checked']; if ($checked == FALSE) { unset($data['checked']); } else { $data['checked'] = 'checked'; } } if ($checked == TRUE) { $defaults['checked'] = 'checked'; } else { unset($defaults['checked']); } return '\n"; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_radio')) { /** * Radio Button * * @param mixed * @param string * @param bool * @param mixed * @return string */ function form_radio($data = '', $value = '', $checked = FALSE, $extra = '') { is_array($data) OR $data = array('name' => $data); $data['type'] = 'radio'; return form_checkbox($data, $value, $checked, $extra); } } // ------------------------------------------------------------------------ if ( ! function_exists('form_submit')) { /** * Submit Button * * @param mixed * @param string * @param mixed * @return string */ function form_submit($data = '', $value = '', $extra = '') { $defaults = array( 'type' => 'submit', 'name' => is_array($data) ? '' : $data, 'value' => $value ); return '\n"; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_reset')) { /** * Reset Button * * @param mixed * @param string * @param mixed * @return string */ function form_reset($data = '', $value = '', $extra = '') { $defaults = array( 'type' => 'reset', 'name' => is_array($data) ? '' : $data, 'value' => $value ); return '\n"; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_button')) { /** * Form Button * * @param mixed * @param string * @param mixed * @return string */ function form_button($data = '', $content = '', $extra = '') { $defaults = array( 'name' => is_array($data) ? '' : $data, 'type' => 'button' ); if (is_array($data) && isset($data['content'])) { $content = $data['content']; unset($data['content']); // content is not an attribute } return '\n"; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_label')) { /** * Form Label Tag * * @param string The text to appear onscreen * @param string The id the label applies to * @param mixed Additional attributes * @return string */ function form_label($label_text = '', $id = '', $attributes = array()) { $label = ''.$label_text.''; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_fieldset')) { /** * Fieldset Tag * * Used to produce

text. To close fieldset * use form_fieldset_close() * * @param string The legend text * @param array Additional attributes * @return string */ function form_fieldset($legend_text = '', $attributes = array()) { $fieldset = '\n"; if ($legend_text !== '') { return $fieldset.''.$legend_text."\n"; } return $fieldset; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_fieldset_close')) { /** * Fieldset Close Tag * * @param string * @return string */ function form_fieldset_close($extra = '') { return '

'.$extra; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_close')) { /** * Form Close Tag * * @param string * @return string */ function form_close($extra = '') { return ''.$extra; } } // ------------------------------------------------------------------------ if ( ! function_exists('form_prep')) { /** * Form Prep * * Formats text so that it can be safely placed in a form field in the event it has HTML tags. * * @deprecated 3.0.0 An alias for html_escape() * @param string|string[] $str Value to escape * @return string|string[] Escaped values */ function form_prep($str) { return html_escape($str, TRUE); } } // ------------------------------------------------------------------------ if ( ! function_exists('set_value')) { /** * Form Value * * Grabs a value from the POST array for the specified field so you can * re-populate an input field or textarea. If Form Validation * is active it retrieves the info from the validation class * * @param string $field Field name * @param string $default Default value * @param bool $html_escape Whether to escape HTML special characters or not * @return string */ function set_value($field, $default = '', $html_escape = TRUE) { $CI =& get_instance(); $value = (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field)) ? $CI->form_validation->set_value($field, $default) : $CI->input->post($field, FALSE); isset($value) OR $value = $default; return ($html_escape) ? html_escape($value) : $value; } } // ------------------------------------------------------------------------ if ( ! function_exists('set_select')) { /** * Set Select * * Let's you set the selected value of a