Viewing file:  url_helper.php (12 KB) -rw-r--r--
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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* CodeIgniter URL Helpers
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/helpers/url_helper.html
*/
// ------------------------------------------------------------------------
/**
* Site URL
*
* Create a local URL based on your basepath. Segments can be passed via the
* first parameter either as a string or an array.
*
* @access public
* @param string
* @return string
*/
if ( ! function_exists('site_url'))
{
function site_url($uri = '')
{
$CI =& get_instance();
return $CI->config->site_url($uri);
}
}
// ------------------------------------------------------------------------
/**
* Base URL
*
* Returns the "base_url" item from your config file
*
* @access public
* @return string
*/
if ( ! function_exists('base_url'))
{
function base_url()
{
$CI =& get_instance();
return $CI->config->slash_item('base_url');
}
}
// ------------------------------------------------------------------------
/**
* Current URL
*
* Returns the full URL (including segments) of the page where this
* function is placed
*
* @access public
* @return string
*/
if ( ! function_exists('current_url'))
{
function current_url()
{
$CI =& get_instance();
return $CI->config->site_url($CI->uri->uri_string());
}
}
// ------------------------------------------------------------------------
/**
* URL String
*
* Returns the URI segments.
*
* @access public
* @return string
*/
if ( ! function_exists('uri_string'))
{
function uri_string()
{
$CI =& get_instance();
return $CI->uri->uri_string();
}
}
// ------------------------------------------------------------------------
/**
* Index page
*
* Returns the "index_page" from your config file
*
* @access public
* @return string
*/
if ( ! function_exists('index_page'))
{
function index_page()
{
$CI =& get_instance();
return $CI->config->item('index_page');
}
}
// ------------------------------------------------------------------------
/**
* Anchor Link
*
* Creates an anchor based on the local URL.
*
* @access public
* @param string the URL
* @param string the link title
* @param mixed any attributes
* @return string
*/
if ( ! function_exists('anchor'))
{
function anchor($uri = '', $title = '', $attributes = '')
{
$title = (string) $title;
if ( ! is_array($uri))
{
$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
}
else
{
$site_url = site_url($uri);
}
if ($title == '')
{
$title = $site_url;
}
if ($attributes != '')
{
$attributes = _parse_attributes($attributes);
}
return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
}
}
// ------------------------------------------------------------------------
/**
* Anchor Link - Pop-up version
*
* Creates an anchor based on the local URL. The link
* opens a new window based on the attributes specified.
*
* @access public
* @param string the URL
* @param string the link title
* @param mixed any attributes
* @return string
*/
if ( ! function_exists('anchor_popup'))
{
function anchor_popup($uri = '', $title = '', $attributes = FALSE)
{
$title = (string) $title;
$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
if ($title == '')
{
$title = $site_url;
}
if ($attributes === FALSE)
{
return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>";
}
if ( ! is_array($attributes))
{
$attributes = array();
}
foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val)
{
$atts[$key] = ( ! isset($attributes[$key])) ? $val : $attributes[$key];
unset($attributes[$key]);
}
if ($attributes != '')
{
$attributes = _parse_attributes($attributes);
}
return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\"$attributes>".$title."</a>";
}
}
// ------------------------------------------------------------------------
/**
* Mailto Link
*
* @access public
* @param string the email address
* @param string the link title
* @param mixed any attributes
* @return string
*/
if ( ! function_exists('mailto'))
{
function mailto($email, $title = '', $attributes = '')
{
$title = (string) $title;
if ($title == "")
{
$title = $email;
}
$attributes = _parse_attributes($attributes);
return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>';
}
}
// ------------------------------------------------------------------------
/**
* Encoded Mailto Link
*
* Create a spam-protected mailto link written in Javascript
*
* @access public
* @param string the email address
* @param string the link title
* @param mixed any attributes
* @return string
*/
if ( ! function_exists('safe_mailto'))
{
function safe_mailto($email, $title = '', $attributes = '')
{
$title = (string) $title;
if ($title == "")
{
$title = $email;
}
for ($i = 0; $i < 16; $i++)
{
$x[] = substr('<a href="mailto:', $i, 1);
}
for ($i = 0; $i < strlen($email); $i++)
{
$x[] = "|".ord(substr($email, $i, 1));
}
$x[] = '"';
if ($attributes != '')
{
if (is_array($attributes))
{
foreach ($attributes as $key => $val)
{
$x[] = ' '.$key.'="';
for ($i = 0; $i < strlen($val); $i++)
{
$x[] = "|".ord(substr($val, $i, 1));
}
$x[] = '"';
}
}
else
{
for ($i = 0; $i < strlen($attributes); $i++)
{
$x[] = substr($attributes, $i, 1);
}
}
}
$x[] = '>';
$temp = array();
for ($i = 0; $i < strlen($title); $i++)
{
$ordinal = ord($title[$i]);
if ($ordinal < 128)
{
$x[] = "|".$ordinal;
}
else
{
if (count($temp) == 0)
{
$count = ($ordinal < 224) ? 2 : 3;
}
$temp[] = $ordinal;
if (count($temp) == $count)
{
$number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
$x[] = "|".$number;
$count = 1;
$temp = array();
}
}
}
$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';
$x = array_reverse($x);
ob_start();
?><script type="text/javascript">
//<![CDATA[
var l=new Array();
<?php
$i = 0;
foreach ($x as $val){ ?>l[<?php echo $i++; ?>]='<?php echo $val; ?>';<?php } ?>
for (var i = l.length-1; i >= 0; i=i-1){
if (l[i].substring(0, 1) == '|') document.write("&#"+unescape(l[i].substring(1))+";");
else document.write(unescape(l[i]));}
//]]>
</script><?php
$buffer = ob_get_contents();
ob_end_clean();
return $buffer;
}
}
// ------------------------------------------------------------------------
/**
* Auto-linker
*
* Automatically links URL and Email addresses.
* Note: There's a bit of extra code here to deal with
* URLs or emails that end in a period. We'll strip these
* off and add them after the link.
*
* @access public
* @param string the string
* @param string the type: email, url, or both
* @param bool whether to create pop-up links
* @return string
*/
if ( ! function_exists('auto_link'))
{
function auto_link($str, $type = 'both', $popup = FALSE)
{
if ($type != 'email')
{
if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
{
$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
for ($i = 0; $i < count($matches['0']); $i++)
{
$period = '';
if (preg_match("|\.$|", $matches['6'][$i]))
{
$period = '.';
$matches['6'][$i] = substr($matches['6'][$i], 0, -1);
}
$str = str_replace($matches['0'][$i],
$matches['1'][$i].'<a href="http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'"'.$pop.'>http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'</a>'.
$period, $str);
}
}
}
if ($type != 'url')
{
if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
{
for ($i = 0; $i < count($matches['0']); $i++)
{
$period = '';
if (preg_match("|\.$|", $matches['3'][$i]))
{
$period = '.';
$matches['3'][$i] = substr($matches['3'][$i], 0, -1);
}
$str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str);
}
}
}
return $str;
}
}
// ------------------------------------------------------------------------
/**
* Prep URL
*
* Simply adds the http:// part if no scheme is included
*
* @access public
* @param string the URL
* @return string
*/
if ( ! function_exists('prep_url'))
{
function prep_url($str = '')
{
if ($str == 'http://' OR $str == '')
{
return '';
}
$url = parse_url($str);
if ( ! $url OR ! isset($url['scheme']))
{
$str = 'http://'.$str;
}
return $str;
}
}
// ------------------------------------------------------------------------
/**
* Create URL Title
*
* Takes a "title" string as input and creates a
* human-friendly URL string with either a dash
* or an underscore as the word separator.
*
* @access public
* @param string the string
* @param string the separator: dash, or underscore
* @return string
*/
if ( ! function_exists('url_title'))
{
function url_title($str, $separator = 'dash', $lowercase = FALSE)
{
if ($separator == 'dash')
{
$search = '_';
$replace = '-';
}
else
{
$search = '-';
$replace = '_';
}
$trans = array(
'&\#\d+?;' => '',
'&\S+?;' => '',
'\s+' => $replace,
'[^a-z0-9\-\._]' => '',
$replace.'+' => $replace,
$replace.'$' => $replace,
'^'.$replace => $replace,
'\.+$' => ''
);
$str = strip_tags($str);
foreach ($trans as $key => $val)
{
$str = preg_replace("#".$key."#i", $val, $str);
}
if ($lowercase === TRUE)
{
$str = strtolower($str);
}
return trim(stripslashes($str));
}
}
// ------------------------------------------------------------------------
/**
* Header Redirect
*
* Header redirect in two flavors
* For very fine grained control over headers, you could use the Output
* Library's set_header() function.
*
* @access public
* @param string the URL
* @param string the method: location or redirect
* @return string
*/
if ( ! function_exists('redirect'))
{
function redirect($uri = '', $method = 'location', $http_response_code = 302)
{
if ( ! preg_match('#^https?://#i', $uri))
{
$uri = site_url($uri);
}
switch($method)
{
case 'refresh' : header("Refresh:0;url=".$uri);
break;
default : header("Location: ".$uri, TRUE, $http_response_code);
break;
}
exit;
}
}
// ------------------------------------------------------------------------
/**
* Parse out the attributes
*
* Some of the functions use this
*
* @access private
* @param array
* @param bool
* @return string
*/
if ( ! function_exists('_parse_attributes'))
{
function _parse_attributes($attributes, $javascript = FALSE)
{
if (is_string($attributes))
{
return ($attributes != '') ? ' '.$attributes : '';
}
$att = '';
foreach ($attributes as $key => $val)
{
if ($javascript == TRUE)
{
$att .= $key . '=' . $val . ',';
}
else
{
$att .= ' ' . $key . '="' . $val . '"';
}
}
if ($javascript == TRUE AND $att != '')
{
$att = substr($att, 0, -1);
}
return $att;
}
}
/* End of file url_helper.php */
/* Location: ./system/helpers/url_helper.php */
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