My interface Framework---framework function file common.php

<?phpdefined(' Jdhu ') OR die(' No Allow access ');/** * Load config file*/function&get_config ($replace=Array()){    Static $config; if(Empty($config)) {        $file _path= APPPATH. ' Config/config.php '; //If no formal configuration exists, load the environment configuration        if(!file_exists($file _path)) {            $file _path= APPPATH. ' config/'. Environment. ' Config.php '; }        require($file _path); }    //in the replacement configuration file    foreach($replace  as $key=$value) {        $config[$key] =$value; }    return $config;}/** * Load frame/Application class library*/function&load_class ($class,$directory= ' Libraries ',$param=NULL){    Static $_classes=Array(); //if the class has been loaded, the return class    if(isset($_classes[$class])) {        return $_classes[$class]; }    $name=FALSE; //introduce the core class//Find the application first, second find the framework//Overlay Framework class file: If the Jdhu class exists for the application, the framework class is not introduced    foreach(Array(APPPATH, Jdhu) as $path) {        if(file_exists($path.$directory.‘ /‘.$class.‘. Php)) {            //Core class name            $name= ' jdhu_ '.$class; //Note: class_exists The second parameter defaults to True, calling the __autoload () function            if(class_exists($name,FALSE) ===FALSE) {                require_once($path.$directory.‘ /‘.$class.‘. Php); }             Break; }    }    //Introducing inheriting classes: Inheriting framework classes or overriding classes    if(file_exists(APPPATH.$directory.‘ /'. Config_item (' Subclass_prefix ').$class.‘. Php)) {        //Inheriting class names        $name= Config_item (' Subclass_prefix ').$class; require_once(APPPATH.$directory.‘ /‘.$name.‘. Php); }    //gets the class that is loaded, the record has been loadedIs_loaded ($class); //If there are parameters, the class with parameter initialization    $_classes[$class] =isset($param) ?New $name($param) :New $name(); return $_classes[$class];}/** * Get Configuration Items*/functionConfig_item ($item){    Static $_config; if(Empty($_config)) {                //A reference cannot be assigned directly to a static variable and can be assigned to a static variable array        $_config[0] =&Get_config (); }    return $_config[0] [$item];}/** * Gets the class that is loaded, if there is a class name, the record has been loaded*/function&is_loaded ($class= ' '){    Static $_is_loaded=Array(); if($class) {        //class name        $_is_loaded[Strtolower($class)] =$class; }    return $_is_loaded;}/** * Output JSON error and exit*/functionDie_error ($message){    Static $_response; if($_response===NULL) {        $_response[0] =& load_class (' Response ', ' core '); } log_message (' Error ',$message); $_response[0]->die_error ($message);}/** * Record log*/functionLog_message ($level,$message){    Static $_log; if($_log===NULL) {        $_log[0] =& load_class (' Log ', ' core '); }    $_log[0]->write_log ($level,$message);}/** * Get IP address*/functionip_address () {Static $_ip_address= ' '; if($_ip_address) {        return $_ip_address; }    $_ip_address=$_server(' REMOTE_ADDR '); return $_ip_address;}/** * Note: function &xxx () returns the pointer address of the result*/?>

My interface Framework---framework function file common.php