basics.php

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<?php
/* SVN FILE: $Id: basics.php 8281 2009-08-03 19:24:38Z mark_story $ */
/**
 * Basic Cake functionality.
 *
 * Core functions for including other source files, loading models and so forth.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake
 * @since         CakePHP(tm) v 0.2.9
 * @version       $Revision: 8281 $
 * @modifiedby    $LastChangedBy: mark_story $
 * @lastmodified  $Date: 2009-08-03 15:24:38 -0400 (Mon, 03 Aug 2009) $
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */
/**
 * Basic defines for timing functions.
 */
    define('SECOND', 1);
    define('MINUTE', 60 * SECOND);
    define('HOUR', 60 * MINUTE);
    define('DAY', 24 * HOUR);
    define('WEEK', 7 * DAY);
    define('MONTH', 30 * DAY);
    define('YEAR', 365 * DAY);
/**
 * Patch for PHP < 5.0
 */
if (!function_exists('clone')) {
    if (version_compare(PHP_VERSION, '5.0') < 0) {
        eval ('
        function clone($object)
        {
            return $object;
        }');
    }
}
/**
 * Loads configuration files. Receives a set of configuration files
 * to load.
 * Example:
 * <code>
 * config('config1', 'config2');
 * </code>
 *
 * @return boolean Success
 */
    function config() {
        $args = func_get_args();
        foreach ($args as $arg) {
            if ($arg === 'database' && file_exists(CONFIGS . 'database.php')) {
                include_once(CONFIGS . $arg . '.php');
            } elseif (file_exists(CONFIGS . $arg . '.php')) {
                include_once(CONFIGS . $arg . '.php');

                if (count($args) == 1) {
                    return true;
                }
            } else {
                if (count($args) == 1) {
                    return false;
                }
            }
        }
        return true;
    }
/**
 * Loads component/components from LIBS. Takes optional number of parameters.
 *
 * Example:
 * <code>
 * uses('flay', 'time');
 * </code>
 *
 * @param string $name Filename without the .php part
 */
    function uses() {
        $args = func_get_args();
        foreach ($args as $file) {
            require_once(LIBS . strtolower($file) . '.php');
        }
    }
/**
 * Prints out debug information about given variable.
 *
 * Only runs if debug level is greater than zero.
 *
 * @param boolean $var Variable to show debug information for.
 * @param boolean $showHtml If set to true, the method prints the debug data in a screen-friendly way.
 * @param boolean $showFrom If set to true, the method prints from where the function was called.
 * @link http://book.cakephp.org/view/458/Basic-Debugging
 */
    function debug($var = false, $showHtml = false, $showFrom = true) {
        if (Configure::read() > 0) {
            if ($showFrom) {
                $calledFrom = debug_backtrace();
                echo '<strong>' . substr(str_replace(ROOT, '', $calledFrom[0]['file']), 1) . '</strong>';
                echo ' (line <strong>' . $calledFrom[0]['line'] . '</strong>)';
            }
            echo "\n<pre class=\"cake-debug\">\n";

            $var = print_r($var, true);
            if ($showHtml) {
                $var = str_replace('<', '&lt;', str_replace('>', '&gt;', $var));
            }
            echo $var . "\n</pre>\n";
        }
    }
if (!function_exists('getMicrotime')) {
/**
 * Returns microtime for execution time checking
 *
 * @return float Microtime
 */
    function getMicrotime() {
        list($usec, $sec) = explode(' ', microtime());
        return ((float)$usec + (float)$sec);
    }
}
if (!function_exists('sortByKey')) {
/**
 * Sorts given $array by key $sortby.
 *
 * @param array $array Array to sort
 * @param string $sortby Sort by this key
 * @param string $order  Sort order asc/desc (ascending or descending).
 * @param integer $type Type of sorting to perform
 * @return mixed Sorted array
 */
    function sortByKey(&$array, $sortby, $order = 'asc', $type = SORT_NUMERIC) {
        if (!is_array($array)) {
            return null;
        }

        foreach ($array as $key => $val) {
            $sa[$key] = $val[$sortby];
        }

        if ($order == 'asc') {
            asort($sa, $type);
        } else {
            arsort($sa, $type);
        }

        foreach ($sa as $key => $val) {
            $out[] = $array[$key];
        }
        return $out;
    }
}
if (!function_exists('array_combine')) {
/**
 * Combines given identical arrays by using the first array's values as keys,
 * and the second one's values as values. (Implemented for backwards compatibility with PHP4)
 *
 * @param array $a1 Array to use for keys
 * @param array $a2 Array to use for values
 * @return mixed Outputs either combined array or false.
 */
    function array_combine($a1, $a2) {
        $a1 = array_values($a1);
        $a2 = array_values($a2);
        $c1 = count($a1);
        $c2 = count($a2);

        if ($c1 != $c2) {
            return false;
        }
        if ($c1 <= 0) {
            return false;
        }
        $output = array();

        for ($i = 0; $i < $c1; $i++) {
            $output[$a1[$i]] = $a2[$i];
        }
        return $output;
    }
}
/**
 * Convenience method for htmlspecialchars.
 *
 * @param string $text Text to wrap through htmlspecialchars
 * @param string $charset Character set to use when escaping.  Defaults to config value in 'App.encoding' or 'UTF-8'
 * @return string Wrapped text
 * @link http://book.cakephp.org/view/703/h
 */
    function h($text, $charset = null) {
        if (is_array($text)) {
            return array_map('h', $text);
        }
        if (empty($charset)) {
            $charset = Configure::read('App.encoding');
        }
        if (empty($charset)) {
            $charset = 'UTF-8';
        }
        return htmlspecialchars($text, ENT_QUOTES, $charset);
    }
/**
 * Returns an array of all the given parameters.
 *
 * Example:
 * <code>
 * a('a', 'b')
 * </code>
 *
 * Would return:
 * <code>
 * array('a', 'b')
 * </code>
 *
 * @return array Array of given parameters
 * @link http://book.cakephp.org/view/694/a
 */
    function a() {
        $args = func_get_args();
        return $args;
    }
/**
 * Constructs associative array from pairs of arguments.
 *
 * Example:
 * <code>
 * aa('a','b')
 * </code>
 *
 * Would return:
 * <code>
 * array('a'=>'b')
 * </code>
 *
 * @return array Associative array
 * @link http://book.cakephp.org/view/695/aa
 */
    function aa() {
        $args = func_get_args();
        $argc = count($args);
        for ($i = 0; $i < $argc; $i++) {
            if ($i + 1 < $argc) {
                $a[$args[$i]] = $args[$i + 1];
            } else {
                $a[$args[$i]] = null;
            }
            $i++;
        }
        return $a;
    }
/**
 * Convenience method for echo().
 *
 * @param string $text String to echo
 * @link http://book.cakephp.org/view/700/e
 */
    function e($text) {
        echo $text;
    }
/**
 * Convenience method for strtolower().
 *
 * @param string $str String to lowercase
 * @return string Lowercased string
 * @link http://book.cakephp.org/view/705/low
 */
    function low($str) {
        return strtolower($str);
    }
/**
 * Convenience method for strtoupper().
 *
 * @param string $str String to uppercase
 * @return string Uppercased string
 * @link http://book.cakephp.org/view/710/up
 */
    function up($str) {
        return strtoupper($str);
    }
/**
 * Convenience method for str_replace().
 *
 * @param string $search String to be replaced
 * @param string $replace String to insert
 * @param string $subject String to search
 * @return string Replaced string
 * @link http://book.cakephp.org/view/708/r
 */
    function r($search, $replace, $subject) {
        return str_replace($search, $replace, $subject);
    }
/**
 * Print_r convenience function, which prints out <PRE> tags around
 * the output of given array. Similar to debug().
 *
 * @see debug()
 * @param array $var Variable to print out
 * @param boolean $showFrom If set to true, the method prints from where the function was called
 * @link http://book.cakephp.org/view/707/pr
 */
    function pr($var) {
        if (Configure::read() > 0) {
            echo '<pre>';
            print_r($var);
            echo '</pre>';
        }
    }
/**
 * Display parameters.
 *
 * @param mixed $p Parameter as string or array
 * @return string
 */
    function params($p) {
        if (!is_array($p) || count($p) == 0) {
            return null;
        }
        if (is_array($p[0]) && count($p) == 1) {
            return $p[0];
        }
        return $p;
    }
/**
 * Merge a group of arrays
 *
 * @param array First array
 * @param array Second array
 * @param array Third array
 * @param array Etc...
 * @return array All array parameters merged into one
 * @link http://book.cakephp.org/view/696/am
 */
    function am() {
        $r = array();
        $args = func_get_args();
        foreach ($args as $a) {
            if (!is_array($a)) {
                $a = array($a);
            }
            $r = array_merge($r, $a);
        }
        return $r;
    }
/**
 * Gets an environment variable from available sources, and provides emulation
 * for unsupported or inconsistent environment variables (i.e. DOCUMENT_ROOT on
 * IIS, or SCRIPT_NAME in CGI mode).  Also exposes some additional custom
 * environment information.
 *
 * @param  string $key Environment variable name.
 * @return string Environment variable setting.
 * @link http://book.cakephp.org/view/701/env
 */
    function env($key) {
        if ($key == 'HTTPS') {
            if (isset($_SERVER['HTTPS'])) {
                return (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
            }
            return (strpos(env('SCRIPT_URI'), 'https://') === 0);
        }

        if ($key == 'SCRIPT_NAME') {
            if (env('CGI_MODE') && isset($_ENV['SCRIPT_URL'])) {
                $key = 'SCRIPT_URL';
            }
        }

        $val = null;
        if (isset($_SERVER[$key])) {
            $val = $_SERVER[$key];
        } elseif (isset($_ENV[$key])) {
            $val = $_ENV[$key];
        } elseif (getenv($key) !== false) {
            $val = getenv($key);
        }

        if ($key === 'REMOTE_ADDR' && $val === env('SERVER_ADDR')) {
            $addr = env('HTTP_PC_REMOTE_ADDR');
            if ($addr !== null) {
                $val = $addr;
            }
        }

        if ($val !== null) {
            return $val;
        }

        switch ($key) {
            case 'SCRIPT_FILENAME':
                if (defined('SERVER_IIS') && SERVER_IIS === true) {
                    return str_replace('\\\\', '\\', env('PATH_TRANSLATED'));
                }
            break;
            case 'DOCUMENT_ROOT':
                $name = env('SCRIPT_NAME');
                $filename = env('SCRIPT_FILENAME');
                $offset = 0;
                if (!strpos($name, '.php')) {
                    $offset = 4;
                }
                return substr($filename, 0, strlen($filename) - (strlen($name) + $offset));
            break;
            case 'PHP_SELF':
                return str_replace(env('DOCUMENT_ROOT'), '', env('SCRIPT_FILENAME'));
            break;
            case 'CGI_MODE':
                return (PHP_SAPI === 'cgi');
            break;
            case 'HTTP_BASE':
                $host = env('HTTP_HOST');
                if (substr_count($host, '.') !== 1) {
                    return preg_replace('/^([^.])*/i', null, env('HTTP_HOST'));
                }
            return '.' . $host;
            break;
        }
        return null;
    }
if (!function_exists('file_put_contents')) {
/**
 * Writes data into file.
 *
 * If file exists, it will be overwritten. If data is an array, it will be join()ed with an empty string.
 *
 * @param string $fileName File name.
 * @param mixed  $data String or array.
 * @return boolean Success
 */
    function file_put_contents($fileName, $data) {
        if (is_array($data)) {
            $data = join('', $data);
        }
        $res = @fopen($fileName, 'w+b');

        if ($res) {
            $write = @fwrite($res, $data);
            if ($write === false) {
                return false;
            } else {
                @fclose($res);
                return $write;
            }
        }
        return false;
    }
}
/**
 * Reads/writes temporary data to cache files or session.
 *
 * @param  string $path File path within /tmp to save the file.
 * @param  mixed  $data The data to save to the temporary file.
 * @param  mixed  $expires A valid strtotime string when the data expires.
 * @param  string $target  The target of the cached data; either 'cache' or 'public'.
 * @return mixed  The contents of the temporary file.
 * @deprecated Please use Cache::write() instead
 */
    function cache($path, $data = null, $expires = '+1 day', $target = 'cache') {
        if (Configure::read('Cache.disable')) {
            return null;
        }
        $now = time();

        if (!is_numeric($expires)) {
            $expires = strtotime($expires, $now);
        }

        switch (low($target)) {
            case 'cache':
                $filename = CACHE . $path;
            break;
            case 'public':
                $filename = WWW_ROOT . $path;
            break;
            case 'tmp':
                $filename = TMP . $path;
            break;
        }
        $timediff = $expires - $now;
        $filetime = false;

        if (file_exists($filename)) {
            $filetime = @filemtime($filename);
        }

        if ($data === null) {
            if (file_exists($filename) && $filetime !== false) {
                if ($filetime + $timediff < $now) {
                    @unlink($filename);
                } else {
                    $data = @file_get_contents($filename);
                }
            }
        } elseif (is_writable(dirname($filename))) {
            @file_put_contents($filename, $data);
        }
        return $data;
    }
/**
 * Used to delete files in the cache directories, or clear contents of cache directories
 *
 * @param mixed $params As String name to be searched for deletion, if name is a directory all files in directory will be deleted.
 *              If array, names to be searched for deletion.
 *              If clearCache() without params, all files in app/tmp/cache/views will be deleted
 *
 * @param string $type Directory in tmp/cache defaults to view directory
 * @param string $ext The file extension you are deleting
 * @return true if files found and deleted false otherwise
 */
    function clearCache($params = null, $type = 'views', $ext = '.php') {
        if (is_string($params) || $params === null) {
            $params = preg_replace('/\/\//', '/', $params);
            $cache = CACHE . $type . DS . $params;

            if (is_file($cache . $ext)) {
                @unlink($cache . $ext);
                return true;
            } elseif (is_dir($cache)) {
                $files = glob($cache . '*');

                if ($files === false) {
                    return false;
                }

                foreach ($files as $file) {
                    if (is_file($file)) {
                        @unlink($file);
                    }
                }
                return true;
            } else {
                $cache = array(
                    CACHE . $type . DS . '*' . $params . $ext,
                    CACHE . $type . DS . '*' . $params . '_*' . $ext
                );
                $files = array();
                while ($search = array_shift($cache)) {
                    $results = glob($search);
                    if ($results !== false) {
                        $files = array_merge($files, $results);
                    }
                }
                if (empty($files)) {
                    return false;
                }
                foreach ($files as $file) {
                    if (is_file($file)) {
                        @unlink($file);
                    }
                }
                return true;
            }
        } elseif (is_array($params)) {
            foreach ($params as $file) {
                clearCache($file, $type, $ext);
            }
            return true;
        }
        return false;
    }
/**
 * Recursively strips slashes from all values in an array
 *
 * @param array $values Array of values to strip slashes
 * @return mixed What is returned from calling stripslashes
 * @link http://book.cakephp.org/view/709/stripslashes_deep
 */
    function stripslashes_deep($values) {
        if (is_array($values)) {
            foreach ($values as $key => $value) {
                $values[$key] = stripslashes_deep($value);
            }
        } else {
            $values = stripslashes($values);
        }
        return $values;
    }
/**
 * Returns a translated string if one is found; Otherwise, the submitted message.
 *
 * @param string $singular Text to translate
 * @param boolean $return Set to true to return translated string, or false to echo
 * @return mixed translated string if $return is false string will be echoed
 * @link http://book.cakephp.org/view/693/__
 */
    function __($singular, $return = false) {
        if (!$singular) {
            return;
        }
        if (!class_exists('I18n')) {
            App::import('Core', 'i18n');
        }

        if ($return === false) {
            echo I18n::translate($singular);
        } else {
            return I18n::translate($singular);
        }
    }
/**
 * Returns correct plural form of message identified by $singular and $plural for count $count.
 * Some languages have more than one form for plural messages dependent on the count.
 *
 * @param string $singular Singular text to translate
 * @param string $plural Plural text
 * @param integer $count Count
 * @param boolean $return true to return, false to echo
 * @return mixed plural form of translated string if $return is false string will be echoed
 */
    function __n($singular, $plural, $count, $return = false) {
        if (!$singular) {
            return;
        }
        if (!class_exists('I18n')) {
            App::import('Core', 'i18n');
        }

        if ($return === false) {
            echo I18n::translate($singular, $plural, null, 6, $count);
        } else {
            return I18n::translate($singular, $plural, null, 6, $count);
        }
    }
/**
 * Allows you to override the current domain for a single message lookup.
 *
 * @param string $domain Domain
 * @param string $msg String to translate
 * @param string $return true to return, false to echo
 * @return translated string if $return is false string will be echoed
 */
    function __d($domain, $msg, $return = false) {
        if (!$msg) {
            return;
        }
        if (!class_exists('I18n')) {
            App::import('Core', 'i18n');
        }

        if ($return === false) {
            echo I18n::translate($msg, null, $domain);
        } else {
            return I18n::translate($msg, null, $domain);
        }
    }
/**
 * Allows you to override the current domain for a single plural message lookup.
 * Returns correct plural form of message identified by $singular and $plural for count $count
 * from domain $domain.
 *
 * @param string $domain Domain
 * @param string $singular Singular string to translate
 * @param string $plural Plural
 * @param integer $count Count
 * @param boolean $return true to return, false to echo
 * @return plural form of translated string if $return is false string will be echoed
 */
    function __dn($domain, $singular, $plural, $count, $return = false) {
        if (!$singular) {
            return;
        }
        if (!class_exists('I18n')) {
            App::import('Core', 'i18n');
        }

        if ($return === false) {
            echo I18n::translate($singular, $plural, $domain, 6, $count);
        } else {
            return I18n::translate($singular, $plural, $domain, 6, $count);
        }
    }
/**
 * Allows you to override the current domain for a single message lookup.
 * It also allows you to specify a category.
 *
 * The category argument allows a specific category of the locale settings to be used for fetching a message.
 * Valid categories are: LC_CTYPE, LC_NUMERIC, LC_TIME, LC_COLLATE, LC_MONETARY, LC_MESSAGES and LC_ALL.
 *
 * Note that the category must be specified with a numeric value, instead of the constant name.  The values are:
 * LC_CTYPE     0
 * LC_NUMERIC   1
 * LC_TIME      2
 * LC_COLLATE   3
 * LC_MONETARY  4
 * LC_MESSAGES  5
 * LC_ALL       6
 *
 * @param string $domain Domain
 * @param string $msg Message to translate
 * @param integer $category Category
 * @param boolean $return true to return, false to echo
 * @return translated string if $return is false string will be echoed
 */
    function __dc($domain, $msg, $category, $return = false) {
        if (!$msg) {
            return;
        }
        if (!class_exists('I18n')) {
            App::import('Core', 'i18n');
        }

        if ($return === false) {
            echo I18n::translate($msg, null, $domain, $category);
        } else {
            return I18n::translate($msg, null, $domain, $category);
        }
    }
/**
 * Allows you to override the current domain for a single plural message lookup.
 * It also allows you to specify a category.
 * Returns correct plural form of message identified by $singular and $plural for count $count
 * from domain $domain.
 *
 * The category argument allows a specific category of the locale settings to be used for fetching a message.
 * Valid categories are: LC_CTYPE, LC_NUMERIC, LC_TIME, LC_COLLATE, LC_MONETARY, LC_MESSAGES and LC_ALL.
 *
 * Note that the category must be specified with a numeric value, instead of the constant name.  The values are:
 * LC_ALL       0
 * LC_COLLATE   1
 * LC_CTYPE     2
 * LC_MONETARY  3
 * LC_NUMERIC   4
 * LC_TIME      5
 * LC_MESSAGES  6
 *
 * @param string $domain Domain
 * @param string $singular Singular string to translate
 * @param string $plural Plural
 * @param integer $count Count
 * @param integer $category Category
 * @param boolean $return true to return, false to echo
 * @return plural form of translated string if $return is false string will be echoed
 */
    function __dcn($domain, $singular, $plural, $count, $category, $return = false) {
        if (!$singular) {
            return;
        }
        if (!class_exists('I18n')) {
            App::import('Core', 'i18n');
        }

        if ($return === false) {
            echo I18n::translate($singular, $plural, $domain, $category, $count);
        } else {
            return I18n::translate($singular, $plural, $domain, $category, $count);
        }
    }
/**
 * The category argument allows a specific category of the locale settings to be used for fetching a message.
 * Valid categories are: LC_CTYPE, LC_NUMERIC, LC_TIME, LC_COLLATE, LC_MONETARY, LC_MESSAGES and LC_ALL.
 *
 * Note that the category must be specified with a numeric value, instead of the constant name.  The values are:
 * LC_CTYPE     0
 * LC_NUMERIC   1
 * LC_TIME      2
 * LC_COLLATE   3
 * LC_MONETARY  4
 * LC_MESSAGES  5
 * LC_ALL       6
 *
 * @param string $msg String to translate
 * @param integer $category Category
 * @param string $return true to return, false to echo
 * @return translated string if $return is false string will be echoed
 */
    function __c($msg, $category, $return = false) {
        if (!$msg) {
            return;
        }
        if (!class_exists('I18n')) {
            App::import('Core', 'i18n');
        }

        if ($return === false) {
            echo I18n::translate($msg, null, null, $category);
        } else {
            return I18n::translate($msg, null, null, $category);
        }
    }
/**
 * Computes the difference of arrays using keys for comparison.
 *
 * @param array First array
 * @param array Second array
 * @return array Array with different keys
 */
    if (!function_exists('array_diff_key')) {
        function array_diff_key() {
            $valuesDiff = array();

            $argc = func_num_args();
            if ($argc < 2) {
                return false;
            }

            $args = func_get_args();
            foreach ($args as $param) {
                if (!is_array($param)) {
                    return false;
                }
            }

            foreach ($args[0] as $valueKey => $valueData) {
                for ($i = 1; $i < $argc; $i++) {
                    if (array_key_exists($valueKey, $args[$i])) {
                        continue 2;
                    }
                }
                $valuesDiff[$valueKey] = $valueData;
            }
            return $valuesDiff;
        }
    }
/**
 * Computes the intersection of arrays using keys for comparison
 *
 * @param array First array
 * @param array Second array
 * @return array Array with interesected keys
 */
    if (!function_exists('array_intersect_key')) {
        function array_intersect_key($arr1, $arr2) {
            $res = array();
            foreach ($arr1 as $key => $value) {
                if (array_key_exists($key, $arr2)) {
                    $res[$key] = $arr1[$key];
                }
            }
            return $res;
        }
    }
/**
 * Shortcut to Log::write.
 *
 * @param string $message Message to write to log
 */
    function LogError($message) {
        if (!class_exists('CakeLog')) {
            App::import('Core', 'CakeLog');
        }
        $bad = array("\n", "\r", "\t");
        $good = ' ';
        CakeLog::write('error', str_replace($bad, $good, $message));
    }
/**
 * Searches include path for files.
 *
 * @param string $file File to look for
 * @return Full path to file if exists, otherwise false
 * @link http://book.cakephp.org/view/702/fileExistsInPath
 */
    function fileExistsInPath($file) {
        $paths = explode(PATH_SEPARATOR, ini_get('include_path'));
        foreach ($paths as $path) {
            $fullPath = $path . DS . $file;

            if (file_exists($fullPath)) {
                return $fullPath;
            } elseif (file_exists($file)) {
                return $file;
            }
        }
        return false;
    }
/**
 * Convert forward slashes to underscores and removes first and last underscores in a string
 *
 * @param string String to convert
 * @return string with underscore remove from start and end of string
 * @link http://book.cakephp.org/view/697/convertSlash
 */
    function convertSlash($string) {
        $string = trim($string, '/');
        $string = preg_replace('/\/\//', '/', $string);
        $string = str_replace('/', '_', $string);
        return $string;
    }
/**
 * Implements http_build_query for PHP4.
 *
 * @param string $data Data to set in query string
 * @param string $prefix If numeric indices, prepend this to index for elements in base array.
 * @param string $argSep String used to separate arguments
 * @param string $baseKey Base key
 * @return string URL encoded query string
 * @see http://php.net/http_build_query
 */
    if (!function_exists('http_build_query')) {
        function http_build_query($data, $prefix = null, $argSep = null, $baseKey = null) {
            if (empty($argSep)) {
                $argSep = ini_get('arg_separator.output');
            }
            if (is_object($data)) {
                $data = get_object_vars($data);
            }
            $out = array();

            foreach ((array)$data as $key => $v) {
                if (is_numeric($key) && !empty($prefix)) {
                    $key = $prefix . $key;
                }
                $key = urlencode($key);

                if (!empty($baseKey)) {
                    $key = $baseKey . '[' . $key . ']';
                }

                if (is_array($v) || is_object($v)) {
                    $out[] = http_build_query($v, $prefix, $argSep, $key);
                } else {
                    $out[] = $key . '=' . urlencode($v);
                }
            }
            return implode($argSep, $out);
        }
    }
/**
 * Wraps ternary operations. If $condition is a non-empty value, $val1 is returned, otherwise $val2.
 * Don't use for isset() conditions, or wrap your variable with @ operator:
 * Example:
 * <code>
 * ife(isset($variable), @$variable, 'default');
 * </code>
 *
 * @param mixed $condition Conditional expression
 * @param mixed $val1 Value to return in case condition matches
 * @param mixed $val2 Value to return if condition doesn't match
 * @return mixed $val1 or $val2, depending on whether $condition evaluates to a non-empty expression.
 * @link http://book.cakephp.org/view/704/ife
 */
    function ife($condition, $val1 = null, $val2 = null) {
        if (!empty($condition)) {
            return $val1;
        }
        return $val2;
    }
?>

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