[php] 오류 메시지 엄격한 표준 : 비 정적 메서드는 PHP에서 정적으로 호출하면 안됩니다.

다음 PHP가 있습니다. 그러나 index.php를 보면 다음과 같은 오류 메시지가 나타납니다.

엄격한 표준 : 비 정적 메서드 Page :: getInstanceByName ()은 12 행의 /var/www/webworks/index.php에서 정적으로 호출해서는 안됩니다.

누군가가 문제를 해결하는 방법을 알려줄 수 있기를 바랍니다.

index.php

// { common variables and functions
include_once('ww.incs/common.php');
$page=isset($_REQUEST['page'])?$_REQUEST['page']:'';
$id=isset($_REQUEST['id'])?(int)$_REQUEST['id']:0;
...

// { get current page id
if(!$id){
    if($page){ // load by name
        $r=Page::getInstanceByName($page);
        if($r && isset($r->id))$id=$r->id;
    }
    if(!$id){ // else load by special
        $special=1;
        if(!$page){
            $r=Page::getInstanceBySpecial($special);
            if($r && isset($r->id))$id=$r->id;
        }
    }
}

// { load page data
if($id){
    $PAGEDATA=(isset($r) && $r)?$r : Page::getInstance($id);
}
else{
    echo '404 thing goes here';
    exit;
}
...
...

ww.incs / common.php

<?php
require dirname(__FILE__).'/basics.php';
...
...

ww.incs / basics.php

session_start();
if(!function_exists('__autoload')){
    function __autoload($name) {
        require $name . '.php';
    }
}
...
...

Page.php

class Page{
    static $instances             = array();
    static $instancesByName     = array();
    static $instancesBySpecial   = array();
    function __construct($v,$byField=0,$fromRow=0,$pvq=0){
        # byField: 0=ID; 1=Name; 3=special
        if (!$byField && is_numeric($v)){ // by ID
            $r=$fromRow?$fromRow:($v?dbRow("select * from pages where id=$v limit 1"):array());
        }
        else if ($byField == 1){ // by name
            $name=strtolower(str_replace('-','_',$v));
            $fname='page_by_name_'.md5($name);
            $r=dbRow("select * from pages where name like '".addslashes($name)."' limit 1");
        }
        else if ($byField == 3 && is_numeric($v)){ // by special
            $fname='page_by_special_'.$v;
            $r=dbRow("select * from pages where special&$v limit 1");
        }
        else return false;
        if(!count($r || !is_array($r)))return false;
        if(!isset($r['id']))$r['id']=0;
        if(!isset($r['type']))$r['type']=0;
        if(!isset($r['special']))$r['special']=0;
        if(!isset($r['name']))$r['name']='NO NAME SUPPLIED';
        foreach ($r as $k=>$v) $this->{$k}=$v;
        $this->urlname=$r['name'];
        $this->dbVals=$r;
        self::$instances[$this->id] =& $this;
        self::$instancesByName[preg_replace('/[^a-z0-9]/','-',strtolower($this->urlname))] =& $this;
        self::$instancesBySpecial[$this->special] =& $this;
        if(!$this->vars)$this->vars='{}';
        $this->vars=json_decode($this->vars);
    }
    function getInstance($id=0,$fromRow=false,$pvq=false){
        if (!is_numeric($id)) return false;
        if (!@array_key_exists($id,self::$instances)) self::$instances[$id]=new Page($id,0,$fromRow,$pvq);
        return self::$instances[$id];
    }
    function getInstanceByName($name=''){
        $name=strtolower($name);
        $nameIndex=preg_replace('#[^a-z0-9/]#','-',$name);
        if(@array_key_exists($nameIndex,self::$instancesByName))return self::$instancesByName[$nameIndex];
        self::$instancesByName[$nameIndex]=new Page($name,1);
        return self::$instancesByName[$nameIndex];
    }
    function getInstanceBySpecial($sp=0){
        if (!is_numeric($sp)) return false;
        if (!@array_key_exists($sp,$instancesBySpecial)) $instancesBySpecial[$sp]=new Page($sp,3);
        return $instancesBySpecial[$sp];
    }

답변

function getInstanceByName($name=''){

public static function getInstanceByName($name=''){

$var = new ClassName();
$var->method();

(new ClassName)->method();

$r = Page()->getInstanceByName($page);

class Foo {
        //Static variable 
        public static $static_var = 'static variable';
        //Static function 
        static function staticValue() { return 'static function'; }

        //function 
        function Value() { return 'Object'; }
}



 echo Foo::$static_var . "<br/>"; echo Foo::staticValue(). "<br/>"; $foo = new Foo(); echo $foo->Value();

$r=Page::getInstanceByName($page);

$r=Page->getInstanceByName($page);