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limonade.php
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<?php
# ============================================================================ #
/**
* L I M O N A D E
*
* a PHP micro framework.
*
* For more informations: {@link https://github.com/sofadesign/limonade}
*
* @author Fabrice Luraine
* @copyright Copyright (c) 2009 Fabrice Luraine
* @license http://opensource.org/licenses/mit-license.php The MIT License
* @package limonade
*/
# ----------------------------------------------------------------------- #
# Copyright (c) 2009 Fabrice Luraine #
# #
# Permission is hereby granted, free of charge, to any person #
# obtaining a copy of this software and associated documentation #
# files (the "Software"), to deal in the Software without #
# restriction, including without limitation the rights to use, #
# copy, modify, merge, publish, distribute, sublicense, and/or sell #
# copies of the Software, and to permit persons to whom the #
# Software is furnished to do so, subject to the following #
# conditions: #
# #
# The above copyright notice and this permission notice shall be #
# included in all copies or substantial portions of the Software. #
# #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, #
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES #
# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND #
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT #
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, #
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING #
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR #
# OTHER DEALINGS IN THE SOFTWARE. #
# ============================================================================ #
# ============================================================================ #
# 0. PREPARE #
# ============================================================================ #
## CONSTANTS __________________________________________________________________
/**
* Limonade version
*/
define('LIMONADE', '0.5.0');
define('LIM_NAME', 'Un grand cru qui sait se faire attendre');
define('LIM_START_MICROTIME', microtime(true));
define('LIM_SESSION_NAME', 'LIMONADE'.str_replace('.','x',LIMONADE));
define('LIM_SESSION_FLASH_KEY', '_lim_flash_messages');
if(function_exists('memory_get_usage'))
define('LIM_START_MEMORY', memory_get_usage());
define('E_LIM_HTTP', 32768);
define('E_LIM_PHP', 65536);
define('E_LIM_DEPRECATED', 35000);
define('NOT_FOUND', 404);
define('SERVER_ERROR', 500);
define('ENV_PRODUCTION', 10);
define('ENV_DEVELOPMENT', 100);
define('X-SENDFILE', 10);
define('X-LIGHTTPD-SEND-FILE', 20);
# for PHP 5.3.0 <
if(!defined('E_DEPRECATED')) define('E_DEPRECATED', 8192);
if(!defined('E_USER_DEPRECATED')) define('E_USER_DEPRECATED', 16384);
# for PHP 5.2.0 <
if (!defined('E_RECOVERABLE_ERROR')) define('E_RECOVERABLE_ERROR', 4096);
## SETTING BASIC SECURITY _____________________________________________________
# A. Unsets all global variables set from a superglobal array
/**
* @access private
* @return void
*/
function unregister_globals()
{
$args = func_get_args();
foreach($args as $k => $v)
if(array_key_exists($k, $GLOBALS)) unset($GLOBALS[$k]);
}
if(ini_get('register_globals'))
{
unregister_globals( '_POST', '_GET', '_COOKIE', '_REQUEST', '_SERVER',
'_ENV', '_FILES');
ini_set('register_globals', 0);
}
# B. removing magic quotes
/**
* @access private
* @param string $array
* @return array
*/
function remove_magic_quotes($array)
{
foreach ($array as $k => $v)
$array[$k] = is_array($v) ? remove_magic_quotes($v) : stripslashes($v);
return $array;
}
if (function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc())
{
$_GET = remove_magic_quotes($_GET);
$_POST = remove_magic_quotes($_POST);
$_COOKIE = remove_magic_quotes($_COOKIE);
ini_set('magic_quotes_gpc', 0);
}
if(function_exists('set_magic_quotes_runtime') && get_magic_quotes_runtime()) set_magic_quotes_runtime(false);
# C. Disable error display
# by default, no error reporting; it will be switched on later in run().
# ini_set('display_errors', 1); must be called explicitly in app file
# if you want to show errors before running app
ini_set('display_errors', 0);
## SETTING INTERNAL ROUTES _____________________________________________________
dispatch(array("/_lim_css/*.css", array('_lim_css_filename')), 'render_limonade_css');
/**
* Internal controller that responds to route /_lim_css/*.css
*
* @access private
* @return string
*/
function render_limonade_css()
{
option('views_dir', file_path(option('limonade_public_dir'), 'css'));
$fpath = file_path(params('_lim_css_filename').".css");
return css($fpath, null); // with no layout
}
dispatch(array("/_lim_public/**", array('_lim_public_file')), 'render_limonade_file');
/**
* Internal controller that responds to route /_lim_public/**
*
* @access private
* @return void
*/
function render_limonade_file()
{
$fpath = file_path(option('limonade_public_dir'), params('_lim_public_file'));
return render_file($fpath, true);
}
# # #
# ============================================================================ #
# 1. BASE #
# ============================================================================ #
## ABSTRACTS ___________________________________________________________________
# Abstract methods that might be redefined by user:
#
# - function configure(){}
# - function initialize(){}
# - function autoload_controller($callback){}
# - function before($route){}
# - function after($output, $route){}
# - function not_found($errno, $errstr, $errfile=null, $errline=null){}
# - function server_error($errno, $errstr, $errfile=null, $errline=null){}
# - function route_missing($request_method, $request_uri){}
# - function before_exit(){}
# - function before_render($content_or_func, $layout, $locals, $view_path){}
# - function autorender($route){}
# - function before_sending_header($header){}
#
# See abstract.php for more details.
## MAIN PUBLIC FUNCTIONS _______________________________________________________
/**
* Set and returns options values
*
* If multiple values are provided, set $name option with an array of those values.
* If there is only one value, set $name option with the provided $values
*
* @param string $name
* @param mixed $values,...
* @return mixed option value for $name if $name argument is provided, else return all options
*/
function option($name = null, $values = null)
{
static $options = array();
$args = func_get_args();
$name = array_shift($args);
if(is_null($name)) return $options;
if(!empty($args))
{
$options[$name] = count($args) > 1 ? $args : $args[0];
}
if(array_key_exists($name, $options)) return $options[$name];
return;
}
/**
* Set and returns params
*
* Depending on provided arguments:
*
* * Reset params if first argument is null
*
* * If first argument is an array, merge it with current params
*
* * If there is a second argument $value, set param $name (first argument) with $value
* <code>
* params('name', 'Doe') // set 'name' => 'Doe'
* </code>
* * If there is more than 2 arguments, set param $name (first argument) value with
* an array of next arguments
* <code>
* params('months', 'jan', 'feb', 'mar') // set 'month' => array('months', 'jan', 'feb', 'mar')
* </code>
*
* @param mixed $name_or_array_or_null could be null || array of params || name of a param (optional)
* @param mixed $value,... for the $name param (optional)
* @return mixed all params, or one if a first argument $name is provided
*/
function params($name_or_array_or_null = null, $value = null)
{
static $params = array();
$args = func_get_args();
if(func_num_args() > 0)
{
$name = array_shift($args);
if(is_null($name))
{
# Reset params
$params = array();
return $params;
}
if(is_array($name))
{
$params = array_merge($params, $name);
return $params;
}
$nargs = count($args);
if($nargs > 0)
{
$value = $nargs > 1 ? $args : $args[0];
$params[$name] = $value;
}
return array_key_exists($name,$params) ? $params[$name] : null;
}
return $params;
}
/**
* Set and returns template variables
*
* If multiple values are provided, set $name variable with an array of those values.
* If there is only one value, set $name variable with the provided $values
*
* @param string $name
* @param mixed $values,...
* @return mixed variable value for $name if $name argument is provided, else return all variables
*/
function set($name = null, $values = null)
{
static $vars = array();
$args = func_get_args();
$name = array_shift($args);
if(is_null($name)) return $vars;
if(!empty($args))
{
$vars[$name] = count($args) > 1 ? $args : $args[0];
}
if(array_key_exists($name, $vars)) return $vars[$name];
return $vars;
}
/**
* Sets a template variable with a value or a default value if value is empty
*
* @param string $name
* @param string $value
* @param string $default
* @return mixed setted value
*/
function set_or_default($name, $value, $default)
{
return set($name, value_or_default($value, $default));
}
/**
* Running application
*
* @param string $env
* @return void
*/
function run($env = null)
{
if(is_null($env)) $env = env();
# 0. Set default configuration
$root_dir = dirname(app_file());
$lim_dir = dirname(__FILE__);
$base_path = dirname(file_path($env['SERVER']['SCRIPT_NAME']));
$base_file = basename($env['SERVER']['SCRIPT_NAME']);
$base_uri = file_path($base_path, (($base_file == 'index.php') ? '?' : $base_file.'?'));
option('root_dir', $root_dir);
option('limonade_dir', file_path($lim_dir));
option('limonade_views_dir', file_path($lim_dir, 'limonade', 'views'));
option('limonade_public_dir',file_path($lim_dir, 'limonade', 'public'));
option('public_dir', file_path($root_dir, 'public'));
option('views_dir', file_path($root_dir, 'views'));
option('controllers_dir', file_path($root_dir, 'controllers'));
option('lib_dir', file_path($root_dir, 'lib'));
option('error_views_dir', option('limonade_views_dir'));
option('base_path', $base_path);
option('base_uri', $base_uri); // set it manually if you use url_rewriting
option('env', ENV_PRODUCTION);
option('debug', true);
option('session', LIM_SESSION_NAME); // true, false or the name of your session
option('encoding', 'utf-8');
option('signature', LIM_NAME); // X-Limonade header value or false to hide it
option('gzip', false);
option('x-sendfile', 0); // 0: disabled,
// X-SENDFILE: for Apache and Lighttpd v. >= 1.5,
// X-LIGHTTPD-SEND-FILE: for Apache and Lighttpd v. < 1.5
# 1. Set handlers
# 1.1 Set error handling
ini_set('display_errors', 1);
set_error_handler('error_handler_dispatcher', E_ALL ^ E_NOTICE);
# 1.2 Register shutdown function
register_shutdown_function('stop_and_exit');
# 2. Set user configuration
call_if_exists('configure');
# 2.1 Set gzip compression if defined
if(is_bool(option('gzip')) && option('gzip'))
{
ini_set('zlib.output_compression', '1');
}
# 2.2 Set X-Limonade header
if($signature = option('signature')) send_header("X-Limonade: $signature");
# 3. Loading libs
require_once_dir(option('lib_dir'));
fallbacks_for_not_implemented_functions();
# 4. Starting session
if(!defined('SID') && option('session'))
{
if(!is_bool(option('session'))) session_name(option('session'));
if(!session_start()) trigger_error("An error occured while trying to start the session", E_USER_WARNING);
}
# 5. Set some default methods if needed
if(!function_exists('after'))
{
function after($output)
{
return $output;
}
}
if(!function_exists('route_missing'))
{
function route_missing($request_method, $request_uri)
{
halt(NOT_FOUND, "($request_method) $request_uri");
}
}
call_if_exists('initialize');
# 6. Check request
if($rm = request_method($env))
{
if(request_is_head($env)) ob_start(); // then no output
if(!request_method_is_allowed($rm))
halt(HTTP_NOT_IMPLEMENTED, "The requested method <code>'$rm'</code> is not implemented");
# 6.1 Check matching route
if($route = route_find($rm, request_uri($env)))
{
params($route['params']);
# 6.2 Load controllers dir
if(!function_exists('autoload_controller'))
{
function autoload_controller($callback)
{
require_once_dir(option('controllers_dir'));
}
}
autoload_controller($route['callback']);
if(is_callable($route['callback']))
{
# 6.3 Call before function
call_if_exists('before', $route);
# 6.4 Call matching controller function and output result
$output = call_user_func_array($route['callback'], array_values($route['params']));
if(is_null($output)) $output = call_if_exists('autorender', $route);
echo after(error_notices_render() . $output, $route);
}
else halt(SERVER_ERROR, "Routing error: undefined function '{$route['callback']}'", $route);
}
else route_missing($rm, request_uri($env));
}
else halt(HTTP_NOT_IMPLEMENTED, "The requested method <code>'$rm'</code> is not implemented");
}
/**
* Stop and exit limonade application
*
* @access private
* @param boolean exit or not
* @return void
*/
function stop_and_exit($exit = true)
{
call_if_exists('before_exit', $exit);
$headers = headers_list();
if(request_is_head())
{
ob_end_clean();
} else {
$flash_sweep = true;
foreach($headers as $header)
{
// If a Content-Type header exists, flash_sweep only if is text/html
// Else if there's no Content-Type header, flash_sweep by default
if(stripos($header, 'Content-Type:') === 0)
{
$flash_sweep = stripos($header, 'Content-Type: text/html') === 0;
break;
}
}
if($flash_sweep) flash_sweep();
}
if(defined('SID')) session_write_close();
if($exit) exit;
}
/**
* Returns limonade environment variables:
*
* 'SERVER', 'FILES', 'REQUEST', 'SESSION', 'ENV', 'COOKIE',
* 'GET', 'POST', 'PUT', 'DELETE', 'PATCH'
*
* If a null argument is passed, reset and rebuild environment
*
* @param null @reset reset and rebuild environment
* @return array
*/
function env($reset = null)
{
static $env = array();
if(func_num_args() > 0)
{
$args = func_get_args();
if(is_null($args[0])) $env = array();
}
if(empty($env))
{
if(empty($GLOBALS['_SERVER']))
{
// Fixing empty $GLOBALS['_SERVER'] bug
// http://sofadesign.lighthouseapp.com/projects/29612-limonade/tickets/29-env-is-empty
$GLOBALS['_SERVER'] =& $_SERVER;
$GLOBALS['_FILES'] =& $_FILES;
$GLOBALS['_REQUEST'] =& $_REQUEST;
$GLOBALS['_SESSION'] =& $_SESSION;
$GLOBALS['_ENV'] =& $_ENV;
$GLOBALS['_COOKIE'] =& $_COOKIE;
}
$glo_names = array('SERVER', 'FILES', 'REQUEST', 'SESSION', 'ENV', 'COOKIE');
$vars = array_merge($glo_names, request_methods());
foreach($vars as $var)
{
$varname = "_$var";
if(!array_key_exists($varname, $GLOBALS)) $GLOBALS[$varname] = array();
$env[$var] =& $GLOBALS[$varname];
}
$method = request_method($env);
$varname = "_$method";
if ((isset($_SERVER['CONTENT_TYPE'])) && (strpos($_SERVER['CONTENT_TYPE'], 'application/json') === 0))
{
// handle PUT/POST requests which have JSON in request body
$GLOBALS[$varname] = json_decode(file_get_contents('php://input'), true);
}
elseif($method == 'PUT' || $method == 'DELETE')
{
if(array_key_exists('_method', $_POST) && $_POST['_method'] == $method)
{
foreach($_POST as $k => $v)
{
if($k == "_method") continue;
$GLOBALS[$varname][$k] = $v;
}
}
else
{
parse_str(file_get_contents('php://input'), $GLOBALS[$varname]);
}
}
}
return $env;
}
/**
* Returns application root file path
*
* @return string
*/
function app_file()
{
static $file;
if(empty($file))
{
$debug_backtrace = debug_backtrace();
$stacktrace = array_pop($debug_backtrace);
$file = $stacktrace['file'];
}
return file_path($file);
}
# # #
# ============================================================================ #
# 2. ERROR #
# ============================================================================ #
/**
* Associate a function with error code(s) and return all associations
*
* @param string $errno
* @param string $function
* @return array
*/
function error($errno = null, $function = null)
{
static $errors = array();
if(func_num_args() > 0)
{
$errors[] = array('errno'=>$errno, 'function'=> $function);
}
return $errors;
}
/**
* Raise an error, passing a given error number and an optional message,
* then exit.
* Error number should be a HTTP status code or a php user error (E_USER...)
* $errno and $msg arguments can be passsed in any order
* If no arguments are passed, default $errno is SERVER_ERROR (500)
*
* @param int,string $errno Error number or message string
* @param string,string $msg Message string or error number
* @param mixed $debug_args extra data provided for debugging
* @return void
*/
function halt($errno = SERVER_ERROR, $msg = '', $debug_args = null)
{
$args = func_get_args();
$error = array_shift($args);
# switch $errno and $msg args
# TODO cleanup / refactoring
if(is_string($errno))
{
$msg = $errno;
$oldmsg = array_shift($args);
$errno = empty($oldmsg) ? SERVER_ERROR : $oldmsg;
}
else if(!empty($args)) $msg = array_shift($args);
if(empty($msg) && $errno == NOT_FOUND) $msg = request_uri();
if(empty($msg)) $msg = "";
if(!empty($args)) $debug_args = $args;
set('_lim_err_debug_args', $debug_args);
error_handler_dispatcher($errno, $msg, null, null);
}
/**
* Internal error handler dispatcher
* Find and call matching error handler and exit
* If no match found, call default error handler
*
* @access private
* @param int $errno
* @param string $errstr
* @param string $errfile
* @param string $errline
* @return void
*/
function error_handler_dispatcher($errno, $errstr, $errfile, $errline)
{
$back_trace = debug_backtrace();
while($trace = array_shift($back_trace))
{
if($trace['function'] == 'halt')
{
$errfile = $trace['file'];
$errline = $trace['line'];
break;
}
}
# Notices and warning won't halt execution
if(error_wont_halt_app($errno))
{
error_notice($errno, $errstr, $errfile, $errline);
return;
}
else
{
# Other errors will stop application
static $handlers = array();
if(empty($handlers))
{
error(E_LIM_PHP, 'error_default_handler');
$handlers = error();
}
$is_http_err = http_response_status_is_valid($errno);
while($handler = array_shift($handlers))
{
$e = is_array($handler['errno']) ? $handler['errno'] : array($handler['errno']);
while($ee = array_shift($e))
{
if($ee == $errno || $ee == E_LIM_PHP || ($ee == E_LIM_HTTP && $is_http_err))
{
echo call_if_exists($handler['function'], $errno, $errstr, $errfile, $errline);
exit;
}
}
}
}
}
/**
* Default error handler
*
* @param string $errno
* @param string $errstr
* @param string $errfile
* @param string $errline
* @return string error output
*/
function error_default_handler($errno, $errstr, $errfile, $errline)
{
$is_http_err = http_response_status_is_valid($errno);
$http_error_code = $is_http_err ? $errno : SERVER_ERROR;
status($http_error_code);
return $http_error_code == NOT_FOUND ?
error_not_found_output($errno, $errstr, $errfile, $errline) :
error_server_error_output($errno, $errstr, $errfile, $errline);
}
/**
* Returns not found error output
*
* @access private
* @param string $msg
* @return string
*/
function error_not_found_output($errno, $errstr, $errfile, $errline)
{
if(!function_exists('not_found'))
{
/**
* Default not found error output
*
* @param string $errno
* @param string $errstr
* @param string $errfile
* @param string $errline
* @return string
*/
function not_found($errno, $errstr, $errfile=null, $errline=null)
{
option('views_dir', option('error_views_dir'));
$msg = h(rawurldecode($errstr));
return html("<h1>Page not found:</h1><p><code>{$msg}</code></p>", error_layout());
}
}
return not_found($errno, $errstr, $errfile, $errline);
}
/**
* Returns server error output
*
* @access private
* @param int $errno
* @param string $errstr
* @param string $errfile
* @param string $errline
* @return string
*/
function error_server_error_output($errno, $errstr, $errfile, $errline)
{
if(!function_exists('server_error'))
{
/**
* Default server error output
*
* @param string $errno
* @param string $errstr
* @param string $errfile
* @param string $errline
* @return string
*/
function server_error($errno, $errstr, $errfile=null, $errline=null)
{
$is_http_error = http_response_status_is_valid($errno);
$args = compact('errno', 'errstr', 'errfile', 'errline', 'is_http_error');
option('views_dir', option('limonade_views_dir'));
$html = render('error.html.php', null, $args);
option('views_dir', option('error_views_dir'));
return html($html, error_layout(), $args);
}
}
return server_error($errno, $errstr, $errfile, $errline);
}
/**
* Set and returns error output layout
*
* @param string $layout
* @return string
*/
function error_layout($layout = false)
{
static $o_layout = 'default_layout.php';
if($layout !== false)
{
option('error_views_dir', option('views_dir'));
$o_layout = $layout;
}
return $o_layout;
}
/**
* Set a notice if arguments are provided
* Returns all stored notices.
* If $errno argument is null, reset the notices array
*
* @access private
* @param string, null $str
* @return array
*/
function error_notice($errno = false, $errstr = null, $errfile = null, $errline = null)
{
static $notices = array();
if($errno) $notices[] = compact('errno', 'errstr', 'errfile', 'errline');
else if(is_null($errno)) $notices = array();
return $notices;
}
/**
* Returns notices output rendering and reset notices
*
* @return string
*/
function error_notices_render()
{
if(option('debug') && option('env') > ENV_PRODUCTION)
{
$notices = error_notice();
error_notice(null); // reset notices
$c_view_dir = option('views_dir'); // keep for restore after render
option('views_dir', option('limonade_views_dir'));
$o = render('_notices.html.php', null, array('notices' => $notices));
option('views_dir', $c_view_dir); // restore current views dir
return $o;
}
}
/**
* Checks if an error is will halt application execution.
* Notices and warnings will not.
*
* @access private
* @param string $num error code number
* @return boolean
*/
function error_wont_halt_app($num)
{
return $num == E_NOTICE ||
$num == E_WARNING ||
$num == E_CORE_WARNING ||
$num == E_COMPILE_WARNING ||
$num == E_USER_WARNING ||
$num == E_USER_NOTICE ||
$num == E_DEPRECATED ||
$num == E_USER_DEPRECATED ||
$num == E_LIM_DEPRECATED;
}
/**
* return error code name for a given code num, or return all errors names
*
* @param string $num
* @return mixed
*/
function error_type($num = null)
{
$types = array (
E_ERROR => 'ERROR',
E_WARNING => 'WARNING',
E_PARSE => 'PARSING ERROR',
E_NOTICE => 'NOTICE',
E_CORE_ERROR => 'CORE ERROR',
E_CORE_WARNING => 'CORE WARNING',
E_COMPILE_ERROR => 'COMPILE ERROR',
E_COMPILE_WARNING => 'COMPILE WARNING',
E_USER_ERROR => 'USER ERROR',
E_USER_WARNING => 'USER WARNING',
E_USER_NOTICE => 'USER NOTICE',
E_STRICT => 'STRICT NOTICE',
E_RECOVERABLE_ERROR => 'RECOVERABLE ERROR',
E_DEPRECATED => 'DEPRECATED WARNING',
E_USER_DEPRECATED => 'USER DEPRECATED WARNING',
E_LIM_DEPRECATED => 'LIMONADE DEPRECATED WARNING'
);
return is_null($num) ? $types : $types[$num];
}
/**
* Returns http response status for a given error number
*
* @param string $errno
* @return int
*/
function error_http_status($errno)
{
$code = http_response_status_is_valid($errno) ? $errno : SERVER_ERROR;
return http_response_status($code);
}
# # #
# ============================================================================ #
# 3. REQUEST #
# ============================================================================ #
/**
* Returns current request method for a given environment or current one
*
* @param string $env
* @return string
*/
function request_method($env = null)
{
if(is_null($env)) $env = env();
$m = array_key_exists('REQUEST_METHOD', $env['SERVER']) ? $env['SERVER']['REQUEST_METHOD'] : null;
if($m == "POST" && array_key_exists('_method', $env['POST']))
$m = strtoupper($env['POST']['_method']);
if(!in_array(strtoupper($m), request_methods()))
{
trigger_error("'$m' request method is unknown or unavailable.", E_USER_WARNING);
$m = false;
}
return $m;
}
/**
* Checks if a request method or current one is allowed
*
* @param string $m
* @return bool
*/
function request_method_is_allowed($m = null)
{
if(is_null($m)) $m = request_method();
return in_array(strtoupper($m), request_methods());
}
/**
* Checks if request method is GET
*
* @param string $env
* @return bool
*/
function request_is_get($env = null)
{
return request_method($env) == "GET";
}
/**
* Checks if request method is POST
*
* @param string $env
* @return bool
*/
function request_is_post($env = null)
{
return request_method($env) == "POST";
}
/**
* Checks if request method is PUT
*
* @param string $env
* @return bool
*/
function request_is_put($env = null)
{
return request_method($env) == "PUT";
}
/**
* Checks if request method is DELETE
*
* @param string $env
* @return bool
*/
function request_is_delete($env = null)
{
return request_method($env) == "DELETE";
}
/**
* Checks if request method is HEAD
*
* @param string $env
* @return bool
*/
function request_is_head($env = null)
{
return request_method($env) == "HEAD";
}
/**
* Checks if request method is PATCH
*
* @param string $env
* @return bool
*/
function request_is_patch($env = null)
{
return request_method($env) == "PATCH";
}
/**
* Returns allowed request methods
*
* @return array