functions_general.php

来自「Zen Cart是真正的电子商务艺术」· PHP 代码 · 共 1,529 行 · 第 1/4 页

  function zen_checkdate($date_to_check, $format_string, &$date_array) {
    $separator_idx = -1;

    $separators = array('-', ' ', '/', '.');
    $month_abbr = array('jan','feb','mar','apr','may','jun','jul','aug','sep','oct','nov','dec');
    $no_of_days = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

// modified by zen-cart.cn
    $format_string = GBcase($format_string,"lower");

    if (strlen($date_to_check) != strlen($format_string)) {
      return false;
    }

    $size = sizeof($separators);
    for ($i=0; $i<$size; $i++) {
      $pos_separator = strpos($date_to_check, $separators[$i]);
      if ($pos_separator != false) {
        $date_separator_idx = $i;
        break;
      }
    }

    for ($i=0; $i<$size; $i++) {
      $pos_separator = strpos($format_string, $separators[$i]);
      if ($pos_separator != false) {
        $format_separator_idx = $i;
        break;
      }
    }

    if ($date_separator_idx != $format_separator_idx) {
      return false;
    }

    if ($date_separator_idx != -1) {
      $format_string_array = explode( $separators[$date_separator_idx], $format_string );
      if (sizeof($format_string_array) != 3) {
        return false;
      }

      $date_to_check_array = explode( $separators[$date_separator_idx], $date_to_check );
      if (sizeof($date_to_check_array) != 3) {
        return false;
      }

      $size = sizeof($format_string_array);
      for ($i=0; $i<$size; $i++) {
        if ($format_string_array[$i] == 'mm' || $format_string_array[$i] == 'mmm') $month = $date_to_check_array[$i];
        if ($format_string_array[$i] == 'dd') $day = $date_to_check_array[$i];
        if ( ($format_string_array[$i] == 'yyyy') || ($format_string_array[$i] == 'aaaa') ) $year = $date_to_check_array[$i];
      }
    } else {
      if (strlen($format_string) == 8 || strlen($format_string) == 9) {
        $pos_month = strpos($format_string, 'mmm');
        if ($pos_month != false) {
          $month = substr( $date_to_check, $pos_month, 3 );
          $size = sizeof($month_abbr);
          for ($i=0; $i<$size; $i++) {
            if ($month == $month_abbr[$i]) {
              $month = $i;
              break;
            }
          }
        } else {
          $month = substr($date_to_check, strpos($format_string, 'mm'), 2);
        }
      } else {
        return false;
      }

      $day = substr($date_to_check, strpos($format_string, 'dd'), 2);
      $year = substr($date_to_check, strpos($format_string, 'yyyy'), 4);
    }

    if (strlen($year) != 4) {
      return false;
    }

    if (!settype($year, 'integer') || !settype($month, 'integer') || !settype($day, 'integer')) {
      return false;
    }

    if ($month > 12 || $month < 1) {
      return false;
    }

    if ($day < 1) {
      return false;
    }

    if (zen_is_leap_year($year)) {
      $no_of_days[1] = 29;
    }

    if ($day > $no_of_days[$month - 1]) {
      return false;
    }

    $date_array = array($year, $month, $day);

    return true;
  }


////
// Check if year is a leap year
  function zen_is_leap_year($year) {
    if ($year % 100 == 0) {
      if ($year % 400 == 0) return true;
    } else {
      if (($year % 4) == 0) return true;
    }

    return false;
  }

////
// Return table heading with sorting capabilities
  function zen_create_sort_heading($sortby, $colnum, $heading) {
    global $PHP_SELF;

    $sort_prefix = '';
    $sort_suffix = '';

    if ($sortby) {
      $sort_prefix = '<a href="' . zen_href_link($_GET['main_page'], zen_get_all_get_params(array('page', 'info', 'sort')) . 'page=1&sort=' . $colnum . ($sortby == $colnum . 'a' ? 'd' : 'a')) . '" title="' . zen_output_string(TEXT_SORT_PRODUCTS . ($sortby == $colnum . 'd' || substr($sortby, 0, 1) != $colnum ? TEXT_ASCENDINGLY : TEXT_DESCENDINGLY) . TEXT_BY . $heading) . '" class="productListing-heading">' ;
      $sort_suffix = (substr($sortby, 0, 1) == $colnum ? (substr($sortby, 1, 1) == 'a' ? PRODUCT_LIST_SORT_ORDER_ASCENDING : PRODUCT_LIST_SORT_ORDER_DESCENDING) : '') . '</a>';
    }

    return $sort_prefix . $heading . $sort_suffix;
  }


////
// Return a product ID with attributes
/*
  function zen_get_uprid_OLD($prid, $params) {
    $uprid = $prid;
    if ( (is_array($params)) && (!strstr($prid, '{')) ) {
      while (list($option, $value) = each($params)) {
        $uprid = $uprid . '{' . $option . '}' . $value;
      }
    }

    return $uprid;
  }
*/


////
// Return a product ID with attributes
  function zen_get_uprid($prid, $params) {
//print_r($params);
    $uprid = $prid;
    if ( (is_array($params)) && (!strstr($prid, ':')) ) {
      while (list($option, $value) = each($params)) {
        if (is_array($value)) {
          while (list($opt, $val) = each($value)) {
            $uprid = $uprid . '{' . $option . '}' . trim($opt);
          }
          break;
        }
        //CLR 030714 Add processing around $value. This is needed for text attributes.
        $uprid = $uprid . '{' . $option . '}' . trim($value);
      }
    //CLR 030228 Add else stmt to process product ids passed in by other routines.
      $md_uprid = '';

      $md_uprid = md5($uprid);
      return $prid . ':' . $md_uprid;
    } else {
      return $prid;
    }
  }


////
// Return a product ID from a product ID with attributes
  function zen_get_prid($uprid) {
    $pieces = explode(':', $uprid);

    return $pieces[0];
  }



////
// Get the number of times a word/character is present in a string
  function zen_word_count($string, $needle) {
    $temp_array = split($needle, $string);

    return sizeof($temp_array);
  }


////
  function zen_count_modules($modules = '') {
    $count = 0;

    if (empty($modules)) return $count;

    $modules_array = split(';', $modules);

    for ($i=0, $n=sizeof($modules_array); $i<$n; $i++) {
      $class = substr($modules_array[$i], 0, strrpos($modules_array[$i], '.'));

      if (is_object($GLOBALS[$class])) {
        if ($GLOBALS[$class]->enabled) {
          $count++;
        }
      }
    }

    return $count;
  }

////
  function zen_count_payment_modules() {
    return zen_count_modules(MODULE_PAYMENT_INSTALLED);
  }

////
  function zen_count_shipping_modules() {
    return zen_count_modules(MODULE_SHIPPING_INSTALLED);
  }

////
  function zen_create_random_value($length, $type = 'mixed') {
    if ( ($type != 'mixed') && ($type != 'chars') && ($type != 'digits')) return false;

    $rand_value = '';
    while (strlen($rand_value) < $length) {
      if ($type == 'digits') {
        $char = zen_rand(0,9);
      } else {
        $char = chr(zen_rand(0,255));
      }
      if ($type == 'mixed') {
        if (eregi('^[a-z0-9]$', $char)) $rand_value .= $char;
      } elseif ($type == 'chars') {
        if (eregi('^[a-z]$', $char)) $rand_value .= $char;
      } elseif ($type == 'digits') {
        if (ereg('^[0-9]$', $char)) $rand_value .= $char;
      }
    }

    return $rand_value;
  }

////
  function zen_array_to_string($array, $exclude = '', $equals = '=', $separator = '&') {
    if (!is_array($exclude)) $exclude = array();
    if (!is_array($array)) $array = array();

    $get_string = '';
    if (sizeof($array) > 0) {
      while (list($key, $value) = each($array)) {
        if ( (!in_array($key, $exclude)) && ($key != 'x') && ($key != 'y') ) {
          $get_string .= $key . $equals . $value . $separator;
        }
      }
      $remove_chars = strlen($separator);
      $get_string = substr($get_string, 0, -$remove_chars);
    }

    return $get_string;
  }

////
  function zen_not_null($value) {
    if (is_array($value)) {
      if (sizeof($value) > 0) {
        return true;
      } else {
        return false;
      }
    } elseif( is_a( $value, 'queryFactoryResult' ) ) {
      if (sizeof($value->result) > 0) {
        return true;
      } else {
        return false;
      }
    } else {
      if (($value != '') && (strtolower($value) != 'null') && (strlen(trim($value)) > 0)) {
        return true;
      } else {
        return false;
      }
    }
  }


////
// Checks to see if the currency code exists as a currency
// TABLES: currencies
  function zen_currency_exists($code, $getFirstDefault = false) {
    global $db;
    $code = zen_db_prepare_input($code);

    $currency_code = "select code
                      from " . TABLE_CURRENCIES . "
                      where code = '" . zen_db_input($code) . "' LIMIT 1";

    $currency_first = "select code
                      from " . TABLE_CURRENCIES . "
                      order by value ASC LIMIT 1";

    $currency = $db->Execute(($getFirstDefault == false) ? $currency_code : $currency_first);

    if ($currency->RecordCount()) {
      return strtoupper($currency->fields['code']);
    } else {
      return false;
    }
  }

////
  function zen_string_to_int($string) {
    return (int)$string;
  }

////
// Return a random value
  function zen_rand($min = null, $max = null) {
    static $seeded;

    if (!isset($seeded)) {
      mt_srand((double)microtime()*1000000);
      $seeded = true;
    }

    if (isset($min) && isset($max)) {
      if ($min >= $max) {
        return $min;
      } else {
        return mt_rand($min, $max);
      }
    } else {
      return mt_rand();
    }
  }

////
  function zen_get_top_level_domain($url) {
    if (strpos($url, '://')) {
      $url = parse_url($url);
      $url = $url['host'];
    }
//echo $url;

    $domain_array = explode('.', $url);
    $domain_size = sizeof($domain_array);
    if ($domain_size > 1) {
      if (SESSION_USE_FQDN == 'True') return $url;
      if (is_numeric($domain_array[$domain_size-2]) && is_numeric($domain_array[$domain_size-1])) {
        return false;
      } else {
        if ($domain_size > 3) {
          return $domain_array[$domain_size-3] . '.' . $domain_array[$domain_size-2] . '.' . $domain_array[$domain_size-1];
        } else {
          return $domain_array[$domain_size-2] . '.' . $domain_array[$domain_size-1];
        }
      }
    } else {
      return false;
    }
  }

////
  function zen_setcookie($name, $value = '', $expire = 0, $path = '/', $domain = '', $secure = 0) {
    setcookie($name, $value, $expire, $path, $domain, $secure);
  }

////
  function zen_get_ip_address() {
    if (isset($_SERVER)) {
      if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
        $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
      } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
        $ip = $_SERVER['HTTP_CLIENT_IP'];
      } else {
        $ip = $_SERVER['REMOTE_ADDR'];