<?php
/**
*
* @package Kleeja
* @copyright (c) 2007 Kleeja.com
* @license ./docs/license.txt
*
*/


/**
* After a lot of work, we faced many hosts who use a old PHP version, or 
* they disabled many general functions ... 
* so, this file contains those type of functions.
*/


//no for directly open
if (!defined('IN_COMMON'))
{
	exit();
}


if(!function_exists('htmlspecialchars_decode'))
{
	function htmlspecialchars_decode($string, $style=ENT_COMPAT)
	{
		$translation = array_flip(get_html_translation_table(HTML_SPECIALCHARS, $style));
		if($style === ENT_QUOTES)
		{
			$translation['&#039;'] = '\'';
		}
		return strtr($string, $translation);
	}
}

//
//http://us2.php.net/manual/en/function.str-split.php#84891
if(!function_exists('str_split'))
{
    function str_split($string, $string_length=1)
	{
	if(strlen($string) > $string_length || !$string_length)
		{
	    do
			{
		$c = strlen($string);
		$parts[] = substr($string, 0, $string_length);
		$string	 = substr($string, $string_length);
	    }
			while($string !== false);
	}
		else
		{
	    $parts = array($string);
	}
	return $parts;
    }
}

//Custom base64_* functions
function kleeja_base64_encode($str = ''){ return function_exists('base64_encode') ? base64_encode($str) : base64encode($str); }
function kleeja_base64_decode($str = ''){ return function_exists('base64_decode') ? base64_decode($str) : base64decode($str); }

//http://www.php.net/manual/en/function.base64-encode.php#63270
function base64encode($string = '')
{
	if(!function_exists('convert_binary_str'))
	{
		function convert_binary_str($string)
		{
			if (strlen($string) <= 0)
				return;

			$tmp = decbin(ord($string[0]));
			$tmp = str_repeat('0', 8-strlen($tmp)) . $tmp;
			return $tmp . convert_binary_str(substr($string,1));
		}
	}

	$binval = convert_binary_str($string);
	$final = '';
	$start = 0;

	while ($start < strlen($binval))
	{
		if (strlen(substr($binval,$start)) < 6)
			$binval .= str_repeat("0", 6-strlen(substr($binval,$start)));
		$tmp = bindec(substr($binval, $start,6));
		if ($tmp < 26)
			$final .= chr($tmp+65);
		elseif ($tmp > 25 && $tmp < 52)
			$final .= chr($tmp+71);
		elseif ($tmp == 62)
			$final .= "+";
		elseif ($tmp == 63)
			$final .= "/";
		elseif (!$tmp)
			$final .= "A";
		else
			$final .= chr($tmp-4);
		$start += 6;
	}
	if (strlen($final)%4>0)
		$final .= str_repeat('=', 4-strlen($final)%4);
	return $final;
}


function base64decode($str)
{
	$len = strlen($str);
	$ret = '';
	$b64 = array();
	$base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	$len_base64 = strlen($base64);
		
	for ($i = 0; $i < 256; $i++)
		$b64[$i] = 0;
	for ($i = 0; $i < $len_base64 ; $i++)
		$b64[ord($base64[$i])] = $i;

	for($j=0;$j<$len;$j+=4)
	{
		for ($i = 0; $i < 4; $i++)
		{
			$c = ord($str[$j+$i]);
			$a[$i] = $c;
			$b[$i] = $b64[$c];
		}

		$o[0] = ($b[0] << 2) | ($b[1] >> 4);
		$o[1] = ($b[1] << 4) | ($b[2] >> 2);
		$o[2] = ($b[2] << 6) | $b[3];
		if ($a[2] == ord('='))
			$i = 1;
		else if ($a[3] == ord('='))
			$i = 2;
		else
			$i = 3;

		for($k=0;$k<$i;$k++)
			$ret .= chr((int) $o[$k] & 255);

		if ($i < 3)
			break;
	}

	return $ret;
}

if(!function_exists('filesize'))
{
	function kleeja_filesize($filename)
	{
		$a = fopen($filename, 'r'); 
		fseek($a, 0, SEEK_END); 
		$filesize = ftell($a); 
		fclose($a);
		return $filesize;
	}
}
else
{
	function kleeja_filesize($filename)
	{
		return filesize($filename);
	}
}


if(!function_exists("array_column"))
{
    function array_column($array, $column_name)
    {
        return array_map(
								function($element) use($column_name)
								{
									return $element[$column_name];
								},
								array_values($array)
					);
    }
}