<?php

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

CLASS Genfunction {

    public static function load() {
        return new Genfunction;
    }
	
	function get_client_ip() {
		$ipaddress = '';
		if (getenv('HTTP_CLIENT_IP'))
			$ipaddress = getenv('HTTP_CLIENT_IP');
		else if(getenv('HTTP_X_FORWARDED_FOR'))
			$ipaddress = getenv('HTTP_X_FORWARDED_FOR');
		else if(getenv('HTTP_X_FORWARDED'))
			$ipaddress = getenv('HTTP_X_FORWARDED');
		else if(getenv('HTTP_FORWARDED_FOR'))
			$ipaddress = getenv('HTTP_FORWARDED_FOR');
		else if(getenv('HTTP_FORWARDED'))
		   $ipaddress = getenv('HTTP_FORWARDED');
		else if(getenv('REMOTE_ADDR'))
			$ipaddress = getenv('REMOTE_ADDR');
		else
			$ipaddress = 'UNKNOWN';
		return $ipaddress;
	}
	
	function my_number_encrypt($data, $key, $base64_safe=true, $shrink=true) {
        if ($shrink) $data = base_convert($data, 10, 36);
        $data = @mcrypt_encrypt(MCRYPT_ARCFOUR, $key, $data, MCRYPT_MODE_STREAM);
        if ($base64_safe) $data = str_replace("+", '^', str_replace('=', '', base64_encode($data)));
        return $data;
	}

	function my_number_decrypt($data, $key, $base64_safe=true, $expand=true) {
			$data = str_replace("^", "+", $data);
			if ($base64_safe) $data = base64_decode($data.'==');
			$data = @mcrypt_encrypt(MCRYPT_ARCFOUR, $key, $data, MCRYPT_MODE_STREAM);
			if ($expand) $data = base_convert($data, 36, 10);
			return $data;
	}
	
	/* Truncate string*/
	function limit_text($text, $limit) {
      if (str_word_count($text, 0) > $limit) {
          $words = str_word_count($text, 2);
          $pos = array_keys($words);
          $text = substr($text, 0, $pos[$limit]) . '...';
      }
      return $text;
    }

    /* Digunakan untuk format tanggal */
    function date_for_mysql($ref, $separator = '-') {
        $tanggal = explode("-", $ref);
        if (count($tanggal) != 3) {
            return $ref;
        } elseif ($tanggal[1] == "00") {
            return;
        } else {
			return $tanggal[2] . $separator . $tanggal[1] . $separator . $tanggal[0];
        }
    }
	
	/* Digunakan untuk format tanggal time */
    function date_for_mysql_time($ref, $separator = '-') {
		return date('Y-m-d H:i:s', strtotime($ref));
    }
    
    /* Digunakan untuk menghilangkan delimiter koma */
    function conv_num($num) {
        return str_replace(",", "", $num);
    }
    
    function rand_char ($len = 5){
        $charset = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $base = strlen($charset);
        $result = "";
        //echo str_replace(' ', '', substr(microtime(), rand(0, 26), 5));
        //die();
		$xnow = explode(' ', microtime());
        $now = $xnow[1] + mt_rand();
        while($now >= $base) {
            $i = $now % $base;
            $i = str_replace('-', '', $i);
            $result = $charset[$i].$result;
            $now /= $base;
        }
        return substr($result, -$len);
    }
	
	// --------------- SANITIZE URL --------------------------

	//taken from wordpress
	function utf8_uri_encode( $utf8_string, $length = 0 ) {
		$unicode = '';
		$values = array();
		$num_octets = 1;
		$unicode_length = 0;

		$string_length = strlen( $utf8_string );
		for ($i = 0; $i < $string_length; $i++ ) {

			$value = ord( $utf8_string[ $i ] );

			if ( $value < 128 ) {
				if ( $length && ( $unicode_length >= $length ) )
					break;
				$unicode .= chr($value);
				$unicode_length++;
			} else {
				if ( count( $values ) == 0 ) $num_octets = ( $value < 224 ) ? 2 : 3;

				$values[] = $value;

				if ( $length && ( $unicode_length + ($num_octets * 3) ) > $length )
					break;
				if ( count( $values ) == $num_octets ) {
					if ($num_octets == 3) {
						$unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]) . '%' . dechex($values[2]);
						$unicode_length += 9;
					} else {
						$unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]);
						$unicode_length += 6;
					}

					$values = array();
					$num_octets = 1;
				}
			}
		}

		return $unicode;
	}

	//taken from wordpress
	function seems_utf8($str) {
		$length = strlen($str);
		for ($i=0; $i < $length; $i++) {
			$c = ord($str[$i]);
			if ($c < 0x80) $n = 0; # 0bbbbbbb
			elseif (($c & 0xE0) == 0xC0) $n=1; # 110bbbbb
			elseif (($c & 0xF0) == 0xE0) $n=2; # 1110bbbb
			elseif (($c & 0xF8) == 0xF0) $n=3; # 11110bbb
			elseif (($c & 0xFC) == 0xF8) $n=4; # 111110bb
			elseif (($c & 0xFE) == 0xFC) $n=5; # 1111110b
			else return false; # Does not match any model
			for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ?
				if ((++$i == $length) || ((ord($str[$i]) & 0xC0) != 0x80))
					return false;
			}
		}
		return true;
	}

	//function sanitize_title_with_dashes taken from wordpress
	function sanitize($title) {
		$title = strip_tags($title);
		// Preserve escaped octets.
		$title = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title);
		// Remove percent signs that are not part of an octet.
		$title = str_replace('%', '', $title);
		// Restore octets.
		$title = preg_replace('|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title);

		if ($this->seems_utf8($title)) {
			if (function_exists('mb_strtolower')) {
				$title = mb_strtolower($title, 'UTF-8');
			}
			$title = $this->utf8_uri_encode($title, 200);
		}

		$title = strtolower($title);
		$title = preg_replace('/&.+?;/', '', $title); // kill entities
		$title = str_replace('.', '-', $title);
		$title = preg_replace('/[^%a-z0-9 _-]/', '', $title);
		$title = preg_replace('/\s+/', '-', $title);
		$title = preg_replace('|-+|', '-', $title);
		$title = trim($title, '-');

		return $title;
	}
	
	function selisih_time($starttime) 
	{ 
		$duration = microtime(true) - $starttime;
		$hour	  = (int)($duration/60/60);
		$minutes  = (int)($duration/60)-$hour*60;
		$second   = $duration-$hour*60*60-$minutes*60;
		if(is_float($second)) {
			$second = number_format((float)$second, 3, '.', '');
		}
		
		$loadtime = empty($hour) ? "" : "{$hour} Hours";
		$loadtime .= empty($minutes) ? "" : " {$minutes} Minutes";
		$loadtime .= empty($second) ? "-" : " {$second} Second";
		
		return array("jam" => $hour, "menit" => $minutes, "detik" => $second, "loadtime" => $loadtime);
	}
}