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| Current File : /home1/savoy/www/savoyglobal.net/eduplus1/system/helpers/string_helper.php |
<?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 String Helpers
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/helpers/string_helper.html
*/
// ------------------------------------------------------------------------
/**
* Trim Slashes
*
* Removes any leading/trailing slashes from a string:
*
* /this/that/theother/
*
* becomes:
*
* this/that/theother
*
* @access public
* @param string
* @return string
*/
if ( ! function_exists('trim_slashes'))
{
function trim_slashes($str)
{
return trim($str, '/');
}
}
// ------------------------------------------------------------------------
/**
* Strip Slashes
*
* Removes slashes contained in a string or in an array
*
* @access public
* @param mixed string or array
* @return mixed string or array
*/
if ( ! function_exists('strip_slashes'))
{
function strip_slashes($str)
{
if (is_array($str))
{
foreach ($str as $key => $val)
{
$str[$key] = strip_slashes($val);
}
}
else
{
$str = stripslashes($str);
}
return $str;
}
}
// ------------------------------------------------------------------------
/**
* Strip Quotes
*
* Removes single and double quotes from a string
*
* @access public
* @param string
* @return string
*/
if ( ! function_exists('strip_quotes'))
{
function strip_quotes($str)
{
return str_replace(array('"', "'"), '', $str);
}
}
// ------------------------------------------------------------------------
/**
* Quotes to Entities
*
* Converts single and double quotes to entities
*
* @access public
* @param string
* @return string
*/
if ( ! function_exists('quotes_to_entities'))
{
function quotes_to_entities($str)
{
return str_replace(array("\'","\"","'",'"'), array("'",""","'","""), $str);
}
}
// ------------------------------------------------------------------------
/**
* Reduce Double Slashes
*
* Converts double slashes in a string to a single slash,
* except those found in http://
*
* http://www.some-site.com//index.php
*
* becomes:
*
* http://www.some-site.com/index.php
*
* @access public
* @param string
* @return string
*/
if ( ! function_exists('reduce_double_slashes'))
{
function reduce_double_slashes($str)
{
return preg_replace("#(^|[^:])//+#", "\\1/", $str);
}
}
// ------------------------------------------------------------------------
/**
* Reduce Multiples
*
* Reduces multiple instances of a particular character. Example:
*
* Fred, Bill,, Joe, Jimmy
*
* becomes:
*
* Fred, Bill, Joe, Jimmy
*
* @access public
* @param string
* @param string the character you wish to reduce
* @param bool TRUE/FALSE - whether to trim the character from the beginning/end
* @return string
*/
if ( ! function_exists('reduce_multiples'))
{
function reduce_multiples($str, $character = ',', $trim = FALSE)
{
$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);
if ($trim === TRUE)
{
$str = trim($str, $character);
}
return $str;
}
}
// ------------------------------------------------------------------------
/**
* Create a Random String
*
* Useful for generating passwords or hashes.
*
* @access public
* @param string type of random string. basic, alpha, alunum, numeric, nozero, unique, md5, encrypt and sha1
* @param integer number of characters
* @return string
*/
if ( ! function_exists('random_string'))
{
function random_string($type = 'alnum', $len = 8)
{
switch($type)
{
case 'basic' : return mt_rand();
break;
case 'alnum' :
case 'numeric' :
case 'nozero' :
case 'alpha' :
switch ($type)
{
case 'alpha' : $pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case 'alnum' : $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case 'numeric' : $pool = '0123456789';
break;
case 'nozero' : $pool = '123456789';
break;
}
$str = '';
for ($i=0; $i < $len; $i++)
{
$str .= substr($pool, mt_rand(0, strlen($pool) -1), 1);
}
return $str;
break;
case 'unique' :
case 'md5' :
return md5(uniqid(mt_rand()));
break;
case 'encrypt' :
case 'sha1' :
$CI =& get_instance();
$CI->load->helper('security');
return do_hash(uniqid(mt_rand(), TRUE), 'sha1');
break;
}
}
}
// ------------------------------------------------------------------------
/**
* Add's _1 to a string or increment the ending number to allow _2, _3, etc
*
* @param string $str required
* @param string $separator What should the duplicate number be appended with
* @param string $first Which number should be used for the first dupe increment
* @return string
*/
function increment_string($str, $separator = '_', $first = 1)
{
preg_match('/(.+)'.$separator.'([0-9]+)$/', $str, $match);
return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
}
// ------------------------------------------------------------------------
/**
* Alternator
*
* Allows strings to be alternated. See docs...
*
* @access public
* @param string (as many parameters as needed)
* @return string
*/
if ( ! function_exists('alternator'))
{
function alternator()
{
static $i;
if (func_num_args() == 0)
{
$i = 0;
return '';
}
$args = func_get_args();
return $args[($i++ % count($args))];
}
}
// ------------------------------------------------------------------------
/**
* Repeater function
*
* @access public
* @param string
* @param integer number of repeats
* @return string
*/
if ( ! function_exists('repeater'))
{
function repeater($data, $num = 1)
{
return (($num > 0) ? str_repeat($data, $num) : '');
}
}
/* End of file string_helper.php */
/* Location: ./system/helpers/string_helper.php */