我试图简单地调用类函数,并且此错误不断困扰着我
语法错误,意外的'$ db'(T_VARIABLE),期望的函数(T_FUNCTION)
database.php
<?php
class db
{
public static Somefunction($pr1, $pr2)
{
// SOME CODE HERE
}
}
?>
dtCall.php
<?php
require_once "database.php";
class database
{
$db = new db();
public function myFun()
{
$result = $db->Somefunction($pr1, $pr2);
}
}
?>
答案 0 :(得分:2)
这可能会对您有所帮助:
#include<stdio.h>
#include<math.h>
int main()
{
int N;
scanf("%d", &N);
int numprime;
numprime = 0;
int P=1;
for (P; P<N; P++)
{
if (P%2==0)
continue;
int e = sqrt(P);
for (int j=3;j<=e;j+=2)
{
if (P%j!=0)
{
numprime = numprime + 1;
}
else
{
continue;
}
}
}
printf("%d", numprime);
}
答案 1 :(得分:-1)
之所以发生这种情况,是因为您需要指定$db
是公共的,受保护的还是私有的。只需在变量声明前面添加public
,private
或“ protected”:
<?php
require_once "database.php";
class database
{
public $db = new db(); #<== Add to this line
public function myFun()
{
$result = $db->Somefunction($pr1, $pr2);
}
}
?>
如果您不确定该使用哪一种,请查看这篇文章:What is the difference between public, private, and protected?
解决此问题后,您将收到一个新错误。那是因为类常量必须是常量。请查看PHP文档以获取更多信息:http://php.net/manual/en/language.oop5.constants.php