* Copyright 2005-2008, Cake Software Foundation, Inc.
* 1785 E. Sahara Avenue, Suite 490-204
* Las Vegas, Nevada 89104
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright 2005-2008, Cake Software Foundation, Inc.
* @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: 7691 $
* @modifiedby $LastChangedBy: nate $
* @lastmodified $Date: 2008-10-02 00:59:12 -0400 (Thu, 02 Oct 2008) $
* @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 < 4.3
*/
if (!function_exists("ob_get_clean")) {
function ob_get_clean() {
$ob_contents = ob_get_contents();
ob_end_clean();
return $ob_contents;
}
}
/**
* Patch for PHP < 4.3
*/
if (version_compare(phpversion(), '5.0') < 0) {
eval ('
function clone($object) {
return $object;
}');
}
/**
* Computes the difference of arrays using keys for comparison
*
* @param array
* @param array
* @return array
*/
if (!function_exists('array_diff_key')) {
function array_diff_key() {
$valuesDiff = array();
if (func_num_args() < 2) {
return false;
}
foreach (func_get_args() as $param) {
if (!is_array($param)) {
return false;
}
}
$args = func_get_args();
foreach ($args[0] as $valueKey => $valueData) {
for ($i = 1; $i < func_num_args(); $i++) {
if (isset($args[$i][$valueKey])) {
continue 2;
}
}
$valuesDiff[$valueKey] = $valueData;
}
return $valuesDiff;
}
}
/**
* Computes the intersection of arrays using keys for comparison
*
* @param array
* @param array
* @return array
*/
if (!function_exists('array_intersect_key')) {
function array_intersect_key($arr1, $arr2) {
$res = array();
foreach ($arr1 as $key=>$value) {
if (array_key_exists($key, $arr2)) {
$res[$key] = $arr1[$key];
}
}
return $res;
}
}
/**
* Loads all models.
*/
function loadModels() {
if (!class_exists('Model')) {
require LIBS . 'model' . DS . 'model.php';
}
$path = Configure::getInstance();
if (!class_exists('AppModel')) {
if (file_exists(APP . 'app_model.php')) {
require(APP . 'app_model.php');
} else {
require(CAKE . 'app_model.php');
}
if (phpversion() < 5 && function_exists("overload")) {
overload('AppModel');
}
}
foreach ($path->modelPaths as $path) {
foreach (listClasses($path)as $model_fn) {
list($name) = explode('.', $model_fn);
$className = Inflector::camelize($name);
if (!class_exists($className)) {
require($path . $model_fn);
if (phpversion() < 5 && function_exists("overload")) {
overload($className);
}
}
}
}
}
/**
* Loads all plugin models.
*
* @param string $plugin Name of plugin
* @return
*/
function loadPluginModels($plugin) {
if (!class_exists('AppModel')) {
loadModel();
}
$pluginAppModel = Inflector::camelize($plugin . '_app_model');
$pluginAppModelFile = APP . 'plugins' . DS . $plugin . DS . $plugin . '_app_model.php';
if (!class_exists($pluginAppModel)) {
if (file_exists($pluginAppModelFile)) {
require($pluginAppModelFile);
} else {
die('Plugins must have a class named ' . $pluginAppModel);
}
if (phpversion() < 5 && function_exists("overload")) {
overload($pluginAppModel);
}
}
$pluginModelDir = APP . 'plugins' . DS . $plugin . DS . 'models' . DS;
foreach (listClasses($pluginModelDir)as $modelFileName) {
list($name) = explode('.', $modelFileName);
$className = Inflector::camelize($name);
if (!class_exists($className)) {
require($pluginModelDir . $modelFileName);
if (phpversion() < 5 && function_exists("overload")) {
overload($className);
}
}
}
}
/**
* Loads custom view class.
*
*/
function loadView($viewClass) {
if (!class_exists($viewClass . 'View')) {
$paths = Configure::getInstance();
$file = Inflector::underscore($viewClass) . '.php';
foreach ($paths->viewPaths as $path) {
if (file_exists($path . $file)) {
return require($path . $file);
}
}
if ($viewFile = fileExistsInPath(LIBS . 'view' . DS . $file)) {
if (file_exists($viewFile)) {
require($viewFile);
return true;
} else {
return false;
}
}
}
}
/**
* Loads a model by CamelCase name.
*/
function loadModel($name = null) {
if (!class_exists('Model')) {
require LIBS . 'model' . DS . 'model.php';
}
if (!class_exists('AppModel')) {
if (file_exists(APP . 'app_model.php')) {
require(APP . 'app_model.php');
} else {
require(CAKE . 'app_model.php');
}
if (phpversion() < 5 && function_exists("overload")) {
overload('AppModel');
}
}
if (!is_null($name) && !class_exists($name)) {
$className = $name;
$name = Inflector::underscore($name);
$paths = Configure::getInstance();
foreach ($paths->modelPaths as $path) {
if (file_exists($path . $name . '.php')) {
require($path . $name . '.php');
if (phpversion() < 5 && function_exists("overload")) {
overload($className);
}
return true;
}
}
return false;
} else {
return true;
}
}
/**
* Loads all controllers.
*/
function loadControllers() {
$paths = Configure::getInstance();
if (!class_exists('AppController')) {
if (file_exists(APP . 'app_controller.php')) {
require(APP . 'app_controller.php');
} else {
require(CAKE . 'app_controller.php');
}
}
$loadedControllers = array();
foreach ($paths->controllerPaths as $path) {
foreach (listClasses($path) as $controller) {
list($name) = explode('.', $controller);
$className = Inflector::camelize(str_replace('_controller', '', $name));
if (loadController($className)) {
$loadedControllers[$controller] = $className;
}
}
}
return $loadedControllers;
}
/**
* Loads a controller and its helper libraries.
*
* @param string $name Name of controller
* @return boolean Success
*/
function loadController($name) {
$paths = Configure::getInstance();
if (!class_exists('AppController')) {
if (file_exists(APP . 'app_controller.php')) {
require(APP . 'app_controller.php');
} else {
require(CAKE . 'app_controller.php');
}
}
if ($name === null) {
return true;
}
if (!class_exists($name . 'Controller')) {
$name = Inflector::underscore($name);
foreach ($paths->controllerPaths as $path) {
if (file_exists($path . $name . '_controller.php')) {
require($path . $name . '_controller.php');
return true;
}
}
if ($controller_fn = fileExistsInPath(LIBS . 'controller' . DS . $name . '_controller.php')) {
if (file_exists($controller_fn)) {
require($controller_fn);
return true;
} else {
return false;
}
}
} else {
return false;
}
}
/**
* Loads a plugin's controller.
*
* @param string $plugin Name of plugin
* @param string $controller Name of controller to load
* @return boolean Success
*/
function loadPluginController($plugin, $controller) {
$pluginAppController = Inflector::camelize($plugin . '_app_controller');
$pluginAppControllerFile = APP . 'plugins' . DS . $plugin . DS . $plugin . '_app_controller.php';
if (!class_exists($pluginAppController)) {
if (file_exists($pluginAppControllerFile)) {
require($pluginAppControllerFile);
} else {
return false;
}
}
if (empty($controller)) {
if (!class_exists($plugin . 'Controller')) {
if (file_exists(APP . 'plugins' . DS . $plugin . DS . 'controllers' . DS . $plugin . '_controller.php')) {
require(APP . 'plugins' . DS . $plugin . DS . 'controllers' . DS . $plugin . '_controller.php');
return true;
}
}
}
if (!class_exists($controller . 'Controller')) {
$controller = Inflector::underscore($controller);
$file = APP . 'plugins' . DS . $plugin . DS . 'controllers' . DS . $controller . '_controller.php';
if (file_exists($file)) {
require($file);
return true;
} elseif (!class_exists(Inflector::camelize($plugin . '_controller'))) {
if (file_exists(APP . 'plugins' . DS . $plugin . DS . 'controllers' . DS . $plugin . '_controller.php')) {
require(APP . 'plugins' . DS . $plugin . DS . 'controllers' . DS . $plugin . '_controller.php');
return true;
} else {
return false;
}
}
}
return true;
}
/**
* Loads a helper
*
* @param string $name Name of helper
* @return boolean Success
*/
function loadHelper($name) {
$paths = Configure::getInstance();
if ($name === null) {
return true;
}
if (!class_exists($name . 'Helper')) {
$name=Inflector::underscore($name);
foreach ($paths->helperPaths as $path) {
if (file_exists($path . $name . '.php')) {
require($path . $name . '.php');
return true;
}
}
if ($helper_fn = fileExistsInPath(LIBS . 'view' . DS . 'helpers' . DS . $name . '.php')) {
if (file_exists($helper_fn)) {
require($helper_fn);
return true;
} else {
return false;
}
}
} else {
return true;
}
}
/**
* Loads a plugin's helper
*
* @param string $plugin Name of plugin
* @param string $helper Name of helper to load
* @return boolean Success
*/
function loadPluginHelper($plugin, $helper) {
if (!class_exists($helper . 'Helper')) {
$helper = Inflector::underscore($helper);
$file = APP . 'plugins' . DS . $plugin . DS . 'views' . DS . 'helpers' . DS . $helper . '.php';
if (file_exists($file)) {
require($file);
return true;
} else {
return false;
}
} else {
return true;
}
}
/**
* Loads a component
*
* @param string $name Name of component
* @return boolean Success
*/
function loadComponent($name) {
$paths = Configure::getInstance();
if ($name === null) {
return true;
}
if (!class_exists($name . 'Component')) {
$name=Inflector::underscore($name);
foreach ($paths->componentPaths as $path) {
if (file_exists($path . $name . '.php')) {
require($path . $name . '.php');
return true;
}
}
if ($component_fn = fileExistsInPath(LIBS . 'controller' . DS . 'components' . DS . $name . '.php')) {
if (file_exists($component_fn)) {
require($component_fn);
return true;
} else {
return false;
}
}
} else {
return true;
}
}
/**
* Loads a plugin's component
*
* @param string $plugin Name of plugin
* @param string $helper Name of component to load
* @return boolean Success
*/
function loadPluginComponent($plugin, $component) {
if (!class_exists($component . 'Component')) {
$component = Inflector::underscore($component);
$file = APP . 'plugins' . DS . $plugin . DS . 'controllers' . DS . 'components' . DS . $component . '.php';
if (file_exists($file)) {
require($file);
return true;
} else {
return false;
}
} else {
return true;
}
}
/**
* Returns an array of filenames of PHP files in given directory.
*
* @param string $path Path to scan for files
* @return array List of files in directory
*/
function listClasses($path) {
$dir = opendir($path);
$classes=array();
while (false !== ($file = readdir($dir))) {
if ((substr($file, -3, 3) == 'php') && substr($file, 0, 1) != '.') {
$classes[] = $file;
}
}
closedir($dir);
return $classes;
}
/**
* Loads configuration files
*
* @return boolean Success
*/
function config() {
$args = func_get_args();
foreach ($args as $arg) {
if (('database' == $arg) && file_exists(CONFIGS . $arg . '.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.
*
* Example:
*
* uses('flay', 'time');
*
*
* @uses LIBS
*/
function uses() {
$args = func_get_args();
foreach ($args as $arg) {
require_once(LIBS . strtolower($arg) . '.php');
}
}
/**
* Require given files in the VENDORS directory. Takes optional number of parameters.
*
* @param string $name Filename without the .php part.
*
*/
function vendor($name) {
$args = func_get_args();
foreach ($args as $arg) {
if (file_exists(APP . 'vendors' . DS . $arg . '.php')) {
require_once(APP . 'vendors' . DS . $arg . '.php');
} else {
require_once(VENDORS . $arg . '.php');
}
}
}
/**
* Prints out debug information about given variable.
*
* Only runs if DEBUG level is non-zero.
*
* @param boolean $var Variable to show debug information for.
* @param boolean $show_html If set to true, the method prints the debug data in a screen-friendly way.
*/
function debug($var = false, $showHtml = false) {
if (Configure::read() > 0) {
print "\n
\n"; ob_start(); print_r($var); $var = ob_get_clean(); if ($showHtml) { $var = str_replace('<', '<', str_replace('>', '>', $var)); } print "{$var}\n\n"; } } /** * Returns microtime for execution time checking * * @return integer */ if (!function_exists('getMicrotime')) { function getMicrotime() { list($usec, $sec) = explode(" ", microtime()); return ((float)$usec + (float)$sec); } } /** * Sorts given $array by key $sortby. * * @param array $array * @param string $sortby * @param string $order Sort order asc/desc (ascending or descending). * @param integer $type * @return mixed */ if (!function_exists('sortByKey')) { function sortByKey(&$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; } } /** * Combines given identical arrays by using the first array's values as keys, * and the second one's values as values. (Implemented for back-compatibility with PHP4) * * @param array $a1 * @param array $a2 * @return mixed Outputs either combined array or false. */ if (!function_exists('array_combine')) { function array_combine($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 $text * @return string */ function h($text) { if (is_array($text)) { return array_map('h', $text); } return htmlspecialchars($text); } /** * Returns an array of all the given parameters. * * Example: *
* a('a', 'b')
*
*
* Would return:
*
* array('a', 'b')
*
*
* @return array
*/
function a() {
$args = func_get_args();
return $args;
}
/**
* Constructs associative array from pairs of arguments.
*
* Example:
*
* aa('a','b')
*
*
* Would return:
*
* array('a'=>'b')
*
*
* @return array
*/
function aa() {
$args = func_get_args();
for ($l = 0, $c = count($args); $l < $c; $l++) {
if ($l + 1 < count($args)) {
$a[$args[$l]] = $args[$l + 1];
} else {
$a[$args[$l]] = null;
}
$l++;
}
return $a;
}
/**
* Convenience method for echo().
*
* @param string $text String to echo
*/
function e($text) {
echo $text;
}
/**
* Convenience method for strtolower().
*
* @param string $str String to lowercase
*/
function low($str) {
return strtolower($str);
}
/**
* Convenience method for strtoupper().
*
* @param string $str String to uppercase
*/
function up($str) {
return strtoupper($str);
}
/**
* Convenience method for str_replace().
*
* @param string $search String to be replaced
* @param string $replace String to insert
* @param string $subject String to search
*/
function r($search, $replace, $subject) {
return str_replace($search, $replace, $subject);
}
/**
* Print_r convenience function, which prints out tags around * the output of given array. Similar to debug(). * * @see debug() * @param array $var */ function pr($var) { if (Configure::read() > 0) { echo ""; print_r($var); echo ""; } } /** * Display parameter * * @param mixed $p Parameter as string or array * @return string */ function params($p) { if (!is_array($p) || count($p) == 0) { return null; } else { if (is_array($p[0]) && count($p) == 1) { return $p[0]; } else { 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 */ function am() { $r = array(); foreach (func_get_args()as $a) { if (!is_array($a)) { $a = array($a); } $r = array_merge($r, $a); } return $r; } /** * Returns the REQUEST_URI from the server environment, or, failing that, * constructs a new one, using the PHP_SELF constant and other variables. * * @return string URI */ function setUri() { if (env('HTTP_X_REWRITE_URL')) { $uri = env('HTTP_X_REWRITE_URL'); } elseif (env('REQUEST_URI')) { $uri = env('REQUEST_URI'); } else { if (env('argv')) { $uri = env('argv'); if (defined('SERVER_IIS')) { $uri = BASE_URL . $uri[0]; } else { $uri = env('PHP_SELF') . '/' . $uri[0]; } } else { $uri = env('PHP_SELF') . '/' . env('QUERY_STRING'); } } return $uri; } /** * Gets an environment variable from available sources. * Used as a backup if $_SERVER/$_ENV are disabled. * * @param string $key Environment variable name. * @return string Environment variable setting. */ function env($key) { if ($key == 'HTTPS') { if (isset($_SERVER) && !empty($_SERVER)) { return (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'); } else { return (strpos(env('SCRIPT_URI'), 'https://') === 0); } } if (isset($_SERVER[$key])) { return $_SERVER[$key]; } elseif (isset($_ENV[$key])) { return $_ENV[$key]; } elseif (getenv($key) !== false) { return getenv($key); } if ($key == 'SCRIPT_FILENAME' && defined('SERVER_IIS') && SERVER_IIS === true) { return str_replace('\\\\', '\\', env('PATH_TRANSLATED') ); } if ($key == 'DOCUMENT_ROOT') { $offset = 0; if (!strpos(env('SCRIPT_NAME'), '.php')) { $offset = 4; } return substr(env('SCRIPT_FILENAME'), 0, strlen(env('SCRIPT_FILENAME')) - (strlen(env('SCRIPT_NAME')) + $offset)); } if ($key == 'PHP_SELF') { return r(env('DOCUMENT_ROOT'), '', env('SCRIPT_FILENAME')); } return null; } /** * Returns contents of a file as a string. * * @param string $fileName Name of the file. * @param boolean $useIncludePath Wheter the function should use the include path or not. * @return mixed Boolean false or contents of required file. */ if (!function_exists('file_get_contents')) { function file_get_contents($fileName, $useIncludePath = false) { $res=fopen($fileName, 'rb', $useIncludePath); if ($res === false) { trigger_error('file_get_contents() failed to open stream: No such file or directory', E_USER_WARNING); return false; } clearstatcache(); if ($fileSize = @filesize($fileName)) { $data = fread($res, $fileSize); } else { $data = ''; while (!feof($res)) { $data .= fread($res, 8192); } } return "$data\n"; } } /** * 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 $data String or array. */ if (!function_exists('file_put_contents')) { function file_put_contents($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 { return $write; } } } } /** * 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 $target The target of the cached data; either 'cache' or 'public'. * @return mixed The contents of the temporary file. */ function cache($path, $data = null, $expires = '+1 day', $target = 'cache') { $now = time(); if (!is_numeric($expires)) { $expires = strtotime($expires, $now); } switch(strtolower($target)) { case 'cache': $filename = CACHE . $path; break; case 'public': $filename = WWW_ROOT . $path; break; } $timediff = $expires - $now; $filetime = false; if (file_exists($filename)) { $filetime = @filemtime($filename); } if ($data === null) { // Read data from file if (file_exists($filename) && $filetime !== false) { if ($filetime + $timediff < $now) { // File has expired @unlink($filename); } else { $data = file_get_contents($filename); } } } else { 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 = CACHE . $type . DS . '*' . $params . $ext; $files = glob($cache); $cache = CACHE . $type . DS . '*' . $params . '_*' . $ext; $files = array_merge($files, glob($cache)); if ($files === false) { return false; } foreach ($files as $file) { if (is_file($file)) { @unlink($file); } } return true; } } elseif (is_array($params)) { foreach ($params as $key => $file) { clearCache($file, $type, $ext); } return true; } return false; } /** * Recursively strips slashes from all values in an array * * @param unknown_type $value * @return unknown */ function stripslashes_deep($value) { if (is_array($value)) { $return = array_map('stripslashes_deep', $value); return $return; } else { $return = stripslashes($value); return $return ; } } /** * Returns a translated string if one is found, * or the submitted message if not found. * * @param unknown_type $msg * @param unknown_type $return * @return unknown * @todo Not implemented fully till 2.0 */ function __($msg, $return = null) { if (is_null($return)) { echo($msg); } else { return $msg; } } /** * Counts the dimensions of an array * * @param array $array * @return int The number of dimensions in $array */ function countdim($array) { if (is_array(reset($array))) { $return = countdim(reset($array)) + 1; } else { $return = 1; } return $return; } /** * Shortcut to Log::write. */ function LogError($message) { if (!class_exists('CakeLog')) { uses('cake_log'); } $bad = array("\n", "\r", "\t"); $good = ' '; CakeLog::write('error', str_replace($bad, $good, $message)); } /** * Searches include path for files * * @param string $file * @return Full path to file if exists, otherwise false */ function fileExistsInPath($file) { $paths = explode(PATH_SEPARATOR, ini_get('include_path')); foreach ($paths as $path) { $fullPath = $path . DIRECTORY_SEPARATOR . $file; if (file_exists($fullPath)) { return $fullPath; } elseif (file_exists($file)) { return $file; } } return false; } /** * Convert forward slashes to underscores and removes first and last underscores in a string * * @param string * @return string with underscore remove from start and end of string */ function convertSlash($string) { $string = trim($string,"/"); $string = preg_replace('/\/\//', '/', $string); $string = str_replace('/', '_', $string); return $string; } /** * chmod recursively on a directory * * @param string $path * @param int $mode * @return boolean */ function chmodr($path, $mode = 0755) { if (!is_dir($path)) { return chmod($path, $mode); } $dir = opendir($path); while ($file = readdir($dir)) { if ($file != '.' && $file != '..') { $fullpath = $path . '/' . $file; if (!is_dir($fullpath)) { if (!chmod($fullpath, $mode)) { return false; } } else { if (!chmodr($fullpath, $mode)) { return false; } } } } closedir($dir); if (chmod($path, $mode)) { return true; } else { return false; } } /** * removed the plugin name from the base url * * @param string $base * @param string $plugin * @return base url with plugin name removed if present */ function strip_plugin($base, $plugin) { if ($plugin != null) { $base = preg_replace('/' . $plugin . '/', '', $base); $base = str_replace('//', '', $base); $pos1 = strrpos($base, '/'); $char = strlen($base) - 1; if ($pos1 == $char) { $base = substr($base, 0, $char); } } return $base; } /** * Wraps ternary operations. If $condition is a non-empty value, $val1 is returned, otherwise $val2. * * @param mixed $condition Conditional expression * @param mixed $val1 * @param mixed $val2 * @return mixed $val1 or $val2, depending on whether $condition evaluates to a non-empty expression. */ function ife($condition, $val1 = null, $val2 = null) { if (!empty($condition)) { return $val1; } return $val2; } ?>