diff options
Diffstat (limited to 'system/core/Common.php')
| -rw-r--r-- | system/core/Common.php | 89 |
1 files changed, 62 insertions, 27 deletions
diff --git a/system/core/Common.php b/system/core/Common.php index eb9e14425..db9fbeb9f 100644 --- a/system/core/Common.php +++ b/system/core/Common.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -39,6 +39,8 @@ * @param string * @return bool TRUE if the current version is $version or higher */ +if ( ! function_exists('is_php')) +{ function is_php($version = '5.0.0') { static $_is_php; @@ -51,6 +53,7 @@ return $_is_php[$version]; } +} // ------------------------------------------------------------------------ @@ -58,12 +61,14 @@ * Tests for file writability * * is_writable() returns TRUE on Windows servers when you really can't write to - * the file, based on the read-only attribute. is_writable() is also unreliable + * the file, based on the read-only attribute. is_writable() is also unreliable * on Unix servers if safe_mode is on. * * @access private * @return void */ +if ( ! function_exists('is_really_writable')) +{ function is_really_writable($file) { // If we're on a Unix server with safe_mode off we call is_writable @@ -73,7 +78,7 @@ } // For windows servers and safe_mode "on" installations we'll actually - // write a file then read it. Bah... + // write a file then read it. Bah... if (is_dir($file)) { $file = rtrim($file, '/').'/'.md5(mt_rand(1,100).mt_rand(1,100)); @@ -96,14 +101,15 @@ fclose($fp); return TRUE; } +} // ------------------------------------------------------------------------ /** * Class registry * -* This function acts as a singleton. If the requested class does not -* exist it is instantiated and set to a static variable. If it has +* This function acts as a singleton. If the requested class does not +* exist it is instantiated and set to a static variable. If it has * previously been instantiated the variable is returned. * * @access public @@ -112,11 +118,13 @@ * @param string the class name prefix * @return object */ +if ( ! function_exists('load_class')) +{ function &load_class($class, $directory = 'libraries', $prefix = 'CI_') { static $_classes = array(); - // Does the class exist? If so, we're done... + // Does the class exist? If so, we're done... if (isset($_classes[$class])) { return $_classes[$class]; @@ -141,7 +149,7 @@ } } - // Is the request a class extension? If so we load it too + // Is the request a class extension? If so we load it too if (file_exists(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.'.php')) { $name = config_item('subclass_prefix').$class; @@ -166,16 +174,19 @@ $_classes[$class] = new $name(); return $_classes[$class]; } +} // -------------------------------------------------------------------- /** -* Keeps track of which libraries have been loaded. This function is +* Keeps track of which libraries have been loaded. This function is * called by the load_class() function above * * @access public * @return array */ +if ( ! function_exists('is_loaded')) +{ function is_loaded($class = '') { static $_is_loaded = array(); @@ -187,6 +198,7 @@ return $_is_loaded; } +} // ------------------------------------------------------------------------ @@ -199,6 +211,8 @@ * @access private * @return array */ +if ( ! function_exists('get_config')) +{ function &get_config($replace = array()) { static $_config; @@ -242,6 +256,7 @@ return $_config[0] =& $config; } +} // ------------------------------------------------------------------------ @@ -251,6 +266,8 @@ * @access public * @return mixed */ +if ( ! function_exists('config_item')) +{ function config_item($item) { static $_config_item = array(); @@ -268,6 +285,7 @@ return $_config_item[$item]; } +} // ------------------------------------------------------------------------ @@ -283,12 +301,15 @@ * @access public * @return void */ +if ( ! function_exists('show_error')) +{ function show_error($message, $status_code = 500, $heading = 'An Error Was Encountered') { $_error =& load_class('Exceptions', 'core'); echo $_error->show_error($heading, $message, 'error_general', $status_code); exit; } +} // ------------------------------------------------------------------------ @@ -302,12 +323,15 @@ * @access public * @return void */ +if ( ! function_exists('show_404')) +{ function show_404($page = '', $log_error = TRUE) { $_error =& load_class('Exceptions', 'core'); $_error->show_404($page, $log_error); exit; } +} // ------------------------------------------------------------------------ @@ -320,6 +344,8 @@ * @access public * @return void */ +if ( ! function_exists('log_message')) +{ function log_message($level = 'error', $message, $php_error = FALSE) { static $_log; @@ -332,6 +358,7 @@ $_log =& load_class('Log'); $_log->write_log($level, $message, $php_error); } +} // ------------------------------------------------------------------------ @@ -343,6 +370,8 @@ * @param string * @return void */ +if ( ! function_exists('set_status_header')) +{ function set_status_header($code = 200, $text = '') { $stati = array( @@ -399,7 +428,7 @@ if ($text == '') { - show_error('No status text available. Please check your status code number or supply your own message text.', 500); + show_error('No status text available. Please check your status code number or supply your own message text.', 500); } $server_protocol = (isset($_SERVER['SERVER_PROTOCOL'])) ? $_SERVER['SERVER_PROTOCOL'] : FALSE; @@ -417,6 +446,7 @@ header("HTTP/1.1 {$code} {$text}", TRUE, $code); } } +} // -------------------------------------------------------------------- @@ -424,7 +454,7 @@ * Exception Handler * * This is the custom exception handler that is declaired at the top -* of Codeigniter.php. The main reason we use this is to permit +* of Codeigniter.php. The main reason we use this is to permit * PHP errors to be logged in our own log files since the user may * not have access to server logs. Since this function * effectively intercepts PHP errors, however, we also need @@ -434,6 +464,8 @@ * @access private * @return void */ +if ( ! function_exists('_exception_handler')) +{ function _exception_handler($severity, $message, $filepath, $line) { // We don't bother with "strict" notices since they tend to fill up @@ -455,7 +487,7 @@ $_error->show_php_error($severity, $message, $filepath, $line); } - // Should we log the error? No? We're done... + // Should we log the error? No? We're done... if (config_item('log_threshold') == 0) { return; @@ -463,32 +495,35 @@ $_error->log_exception($severity, $message, $filepath, $line); } +} - // -------------------------------------------------------------------- - - /** - * Remove Invisible Characters - * - * This prevents sandwiching null characters - * between ascii characters, like Java\0script. - * - * @access public - * @param string - * @return string - */ +// -------------------------------------------------------------------- + +/** + * Remove Invisible Characters + * + * This prevents sandwiching null characters + * between ascii characters, like Java\0script. + * + * @access public + * @param string + * @return string + */ +if ( ! function_exists('remove_invisible_characters')) +{ function remove_invisible_characters($str, $url_encoded = TRUE) { $non_displayables = array(); - + // every control character except newline (dec 10) // carriage return (dec 13), and horizontal tab (dec 09) - + if ($url_encoded) { $non_displayables[] = '/%0[0-8bcef]/'; // url encoded 00-08, 11, 12, 14, 15 $non_displayables[] = '/%1[0-9a-f]/'; // url encoded 16-31 } - + $non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S'; // 00-08, 11, 12, 14-31, 127 do @@ -499,7 +534,7 @@ return $str; } - +} /* End of file Common.php */ /* Location: ./system/core/Common.php */
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