我尝试在服务器上运行项目时发生错误。
无法在/var/www/html/amhadm/vendor/yiisoft/yii2/helpers/BaseStringHelper.php中定义mb_strlen（）
这是我在BaseStringHelper.php中的代码
public static function basename($path, $suffix = '')
{
if (($len = mb_strlen($suffix)) > 0 && mb_substr($path, -$len) == $suffix) {
$path = mb_substr($path, 0, -$len);
}
$path = rtrim(str_replace('\\', '/', $path), '/\\');
if (($pos = mb_strrpos($path, '/')) !== false) {
return mb_substr($path, $pos + 1);
}
return $path;
}
有人可以指导我如何解决这个问题吗？
答案 0 :(得分：0)
PHP默认情况下未启用mb_strlen()功能。您需要手动安装它。在这里查看详细信息：
答案 1 :(得分：0)
安装mbstring 对于5.6版
#include <iostream>
#include<string>
#include <bits/stdc++.h>
using namespace std;
class ZambiaStudents {
private:
// Private attribute
string FNames;
string Sex;
string NRC;
int birthYear;
public:
//constructor
ZambiaStudents(string FNames, string Gender, string NRC, int birthYear) {
this->FNames = FNames;
this->Sex = Sex;
this->NRC = NRC;
this->birthYear = birthYear;
}
public:
// Setters
void setFNames(string FNames) {
this->FNames = FNames;
}
void setGender(string FNames) {
this->Sex = Sex;
}
void setNRC(string FullNames) {
this->NRC = NRC;
}
void setbirthYear(int birthYear) {
this->birthYear = birthYear;
}
// Getters
string getFNames() {
return FNames;
}
string getSex() {
return Sex;
}
string getNRC() {
return NRC;
}
int getbirthYear() {
return birthYear;
}
public:
int calcAge() {
int age;
age=2020-getbirthYear();
return age;
}
};
class RusanguStudents: public ZambiaStudents {
private:
string ID; //student id
string AcNo; //account number
int NumOfCourses; // number of courses
public:
RusanguStudents(string ID, string AcNo, int NumOfCourses, string FNames, string Sex, string NRC, int birthYear) : ZambiaStudents(FNames, Sex, NRC, birthYear)
{
this->AcNo;
this->ID;
this->NumOfCourses;
}
public:
// Setters
void setID(string ID) {
this->ID = ID;
}
void setAcNo(string AcNo) {
this->AcNo = AcNo;
}
void setNumOfCourses(int NumOfCourses) {
this->NumOfCourses = NumOfCourses;
}
// Getters
string getID() {
return ID;
}
string getAcNo() {
return AcNo;
}
int getNumOfCourses() {
return NumOfCourses;
}
public:
int calcBill() {
int bill=500 * getNumOfCourses();
return bill;
}
};
class ArrayOfRusanguStudents : public RusanguStudents{
public:
//student names and age arrays
string stnames[5];
int stage[5];
public:
//Constructor
ArrayOfRusanguStudents(string AcNo, string ID, int NumOfCourses, string FNames, string Sex, string NRC, int birthYear) : RusanguStudents(AcNo, ID, NumOfCourses, FNames, Sex,NRC, birthYear){
}
void assignStudentNames() {
for (int x = 0; x < (sizeof(stnames) / sizeof(stnames[0])); x++) {
cout << ("Enter fullname for Student ") << (x << 0) << (": ") << endl;
string names;
getline(cin, names);
this->setFNames(names);
stnames[x] = this->getFNames();
}
}
void assignStudentage() {
for (int x = 0; x < (sizeof(stage) / sizeof(stage[0])); x++) {
//request user input
cout << ("Enter Year of birth for ") << stnames[x] << endl;
int year;
cin >> year;
this->setbirthYear(year);
//calculate age
int age = this->calcAge();
//append age to array of student age
stage[x] = age;
}
}
void sortStnames(){
int N = sizeof(stnames)/sizeof(stnames[0]); //Get the array size
sort(stnames,stnames+N); //Use the start and end like this
for(int i = 0; i < N; i++){
cout << stnames[i] <<endl;
}
}
//student age sorting method
void sortStage() {
int n = sizeof(stage)/sizeof(stage[0]);
sort(stage, stage+n);
cout << "The Rusangu Student names are ordered according to age: \n";
for (int i = 0; i < n; ++i){
cout << stnames [i] << " is: " << stage[i] << " years old" << endl;
}
}
};
int main() {
ArrayOfRusanguStudents ComputerRusanguStudents("I8829", "A34", 5, "Jane Doe", "Female", "220011/23/1", 1998);
ComputerRusanguStudents.assignStudentNames();
cout << "The following is list of Students sorted by name: \n" ;
ComputerRusanguStudents.sortStnames();
ComputerRusanguStudents.assignStudentage();
cout << "The following is list of Students sorted by age: \n" ;
ComputerRusanguStudents.sortStage();
return 0;
}
对于php 7.0
sudo apt install php5.6-mbstring