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phpmyadmin导出数据库报错：Warning in ./libraries/plugin_interface.lib.php#532 count(): Parameter must be an array or an object that implements Countable

教程大全phpmyadmin报错

phpmyadmin导出数据库报错：Warning in ./libraries/plugin_interface.lib.php#532 count(): Parameter must be an array or an object that implements Countable

详细错误信息如下：

Warning in ./libraries/plugin_interface.lib.php#532

count(): Parameter must be an array or an object that implements Countable

Backtrace

./libraries/display_export.lib.php#284: PMA_pluginGetOptions(

string \'Export\',

array,

)

./libraries/display_export.lib.php#731: PMA_getHtmlForExportOptionsFormat(array)

./libraries/display_export.inc.php#66: PMA_getHtmlForExportOptions(

string \'database\',

string \'vps_cheshirex_co\',

string \'\',

string \'<div><a href=\"#\" onclick=\"setSelectOptions(\\\'dump\\\', \\\'table_select[]\\\', true); return false;\">全选</a> / <a href=\"#\" onclick=\"setSelectOptions(\\\'dump\\\', \\\'table_select[]\\\', false); return false;\">全不选</a><br /><select name=\"table_select[]\" id=\"table_select\" size=\"10\" multiple=\"multiple\"> <option value=\"xm_company\" selected=\"selected\">xm_company</option> <option value=\"xm_index\" selected=\"selected\">xm_index</option> <option value=\"xm_log\" selected=\"selected\">xm_log</option> <option value=\"xm_place\" selected=\"selected\">xm_place</option> <option value=\"xm_user\" selected=\"selected\">xm_user</option> </select></div>\',

integer 5,

array,

string \'\',

)

./db_export.php#92: require_once(./libraries/display_export.inc.php)

错误截图：

问题原因：

是PHPmyadmin和PHP版本不匹配导致。将PHP版本或者PHPmyadmin更换即可。

PHP和PHPmyadmin版本关系：

PHP5.2，phpmyadmin4.1
PHP5.5及以下，phpmyadmin4.4
PHP7.x，phpmyadmin4.7/4.8

高级程序员进化史

论一位程序员从初级到高级再到高管晋升过程中的代码演进之路，其中，有你的影子吗？

一位 Go 程序员的进化史

初级 Go 程序员

package fac

funcFactorial(n int)int{
res := 1

for i := 1; i <= n; i++ {
res *= i
}

return res
}

学会使用函数的 Go 程序员

package fac

funcFactorial(n int)int{
if n == 0 {
return 1
} else {
return Factorial(n - 1) * n
}
}

泛型 Go 程序员

package fac

funcFactorial(n interface{})interface{} {
v, valid := n.(int)
if !valid {
return 0
}

res := 1

for i := 1; i <= v; i++ {
res *= i
}

return res
}

学会了多线程优化的 Go 程序员

package fac

import \"sync\"

funcFactorial(n int)int{
var (
left, right = 1, 1
wg sync.WaitGroup
)

wg.Add(2)

pivot := n / 2

go func{
for i := 1; i < pivot; i++ {
left *= i
}

wg.Done
}

go func{
for i := pivot; i <= n; i++ {
right *= i
}

wg.Done
}

wg.Wait

return left * right
}

掌握了 Go 设计模式的程序员

package fac

func Factorial(n int) <-chan int {
ch := make(chan int)

go func{
prev := 1

for i := 1; i <= n; i++ {
v := prev * i

ch <- v

prev = v
}

close(ch)
}

return ch
}

学会使用成熟的解决方案修复 Go 语言缺点的程序员

package fac

/**
* @see https://en.wikipedia.org/wiki/Factorial
*/
type IFactorial interface {
CalculateFactorial int
}

// FactorialImpl implements IFactorial.
var _ IFactorial = (*FactorialImpl)(nil)

/**
* Used to find factorial of the n.
*/
type FactorialImpl struct {
/**
* The n.
*/
n int
}

/**
* Constructor of the FactorialImpl.
*
* @param n the n.
*/
func NewFactorial(n int) *FactorialImpl {
return &FactorialImpl{
n: n,
}
}

/**
* Gets the n to use in factorial function.
*
* @return int.
*/
func (this *FactorialImpl) GetN int {
return this.n
}

/**
* Sets the n to use in factorial function.
*
* @param n the n.
* @return void.
*/
func (this *FactorialImpl) SetN(n int) {
this.n = n
}

/**
* Returns factorial of the n.
*
* @todo remove \"if\" statement. Maybe we should use a factory or somthing?
*
* @return int.
*/
func (this *FactorialImpl) CalculateFactorial int {
if this.n == 0 {
return 1
}

n := this.n
this.n = this.n - 1

return this.CalculateFactorial * n
}

高级 Go 程序员

package fac

// Factorial returns n!.
funcFactorial(n int)int{
res := 1

for i := 1; i <= n; i++ {
res *= i
}

return res
}


Go 语言之父 Rob Pike

package fac

// Factorial returns n!.
funcFactorial(n int)int{
res := 1

for i := 1; i <= n; i++ {
res *= i
}

return res
}


一个程序员的进化史

初中/高中时初入门

10 PRINT \"HELLO WORLD\"
20 END

大一

program Hello(input, output)
begin
writeln(\'Hello World\')
end.

大四

(defun hello
(print
(cons \'Hello (list \'World))))

初入职场

#include <stdio.h>
voidmain(void)
{
char *message = {\"Hello \", \"World\"};
int i;

for(i = 0; i < 2; ++i)
printf(\"%s\", message[i]);
printf(\"\\n\");
}

中级专家

#include <iostream.h>
#include <string.h>

class string
{
private:
int size;
char *ptr;

string : size(0), ptr(new char[1]) { ptr[0] = 0; }

string(const string &s) : size(s.size)
{
ptr = new char[size + 1];
strcpy(ptr, s.ptr);
}

~string
{
delete ptr;
}

friend ostream &operator <<(ostream &, const string &);
string &operator=(const char *);
};

ostream &operator<<(ostream &stream, const string &s)
{
return(stream << s.ptr);
}

string &string::operator=(const char *chrs)
{
if (this != &chrs)
{
delete ptr;
size = strlen(chrs);
ptr = new char[size + 1];
strcpy(ptr, chrs);
}
return(*this);
}

intmain
{
string str;

str = \"Hello World\";
cout << str << endl;

return(0);
}

主程序员

[
uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)
]
library LHello
{
// bring in the master library
importlib(\"actimp.tlb\");
importlib(\"actexp.tlb\");

// bring in my interfaces
#include \"pshlo.idl\"

[
uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)
]
cotype THello
{
interface IHello;
interface IPersistFile;
};
};

[
exe,
uuid(2573F890-CFEE-101A-9A9F-00AA00342820)
]
module CHelloLib
{

// some code related header files
importheader(<windows.h>);
importheader(<ole2.h>);
importheader(<except.hxx>);
importheader(\"pshlo.h\");
importheader(\"shlo.hxx\");
importheader(\"mycls.hxx\");

// needed typelibs
importlib(\"actimp.tlb\");
importlib(\"actexp.tlb\");
importlib(\"thlo.tlb\");

[
uuid(2573F891-CFEE-101A-9A9F-00AA00342820),
aggregatable
]
coclass CHello
{
cotype THello;
};
};


#include \"ipfix.hxx\"

extern HANDLE hEvent;

class CHello : public CHelloBase
{
public:
IPFIX(CLSID_CHello);

CHello(IUnknown *pUnk);
~CHello;

HRESULT __stdcall PrintSz(LPWSTR pwszString);

private:
static int cObjRef;
};


#include <windows.h>
#include <ole2.h>
#include <stdio.h>
#include <stdlib.h>
#include \"thlo.h\"
#include \"pshlo.h\"
#include \"shlo.hxx\"
#include \"mycls.hxx\"

int CHello::cObjRef = 0;

CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk)
{
cObjRef++;
return;
}

HRESULT __stdcall CHello::PrintSz(LPWSTR pwszString)
{
printf(\"%ws
\", pwszString);
return(ResultFromScode(S_OK));
}


CHello::~CHello(void)
{

// when the object count goes to zero, stop the server
cObjRef--;
if( cObjRef == 0 )
PulseEvent(hEvent);

return;
}

#include <windows.h>
#include <ole2.h>
#include \"pshlo.h\"
#include \"shlo.hxx\"
#include \"mycls.hxx\"

HANDLE hEvent;

int _cdecl main(
int argc,
char * argv[]
) {
ULONG ulRef;
DWORD dwRegistration;
CHelloCF *pCF = new CHelloCF;

hEvent = CreateEvent(, FALSE, FALSE, );

// Initialize the OLE libraries
CoInitializeEx(, COINIT_MULTITHREADED);

CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER,
REGCLS_MULTIPLEUSE, &dwRegistration);

// wait on an event to stop
WaitForSingleObject(hEvent, INFINITE);

// revoke and release the class object
CoRevokeClassObject(dwRegistration);
ulRef = pCF->Release;

// Tell OLE we are going away.
CoUninitialize;

return(0); }

extern CLSID CLSID_CHello;
extern UUID LIBID_CHelloLib;

CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */
0x2573F891,
0xCFEE,
0x101A,
{ 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
};

UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */
0x2573F890,
0xCFEE,
0x101A,
{ 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
};

#include <windows.h>
#include <ole2.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include \"pshlo.h\"
#include \"shlo.hxx\"
#include \"clsid.h\"

int _cdecl main(
int argc,
char * argv[]
) {
HRESULT hRslt;
IHello *pHello;
ULONG ulCnt;
IMoniker * pmk;
WCHAR wcsT[_MAX_PATH];
WCHAR wcsPath[2 * _MAX_PATH];

// get object path
wcsPath[0] = \'\\0\';
wcsT[0] = \'\\0\';
if( argc > 1) {
mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
wcsupr(wcsPath);
}
else {
fprintf(stderr, \"Object path must be specified\\n\");
return(1);
}

// get print string
if(argc > 2)
mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1);
else
wcscpy(wcsT, L\"Hello World\");

printf(\"Linking to object %ws\\n\", wcsPath);
printf(\"Text String %ws\\n\", wcsT);

// Initialize the OLE libraries
hRslt = CoInitializeEx(, COINIT_MULTITHREADED);

if(SUCCEEDED(hRslt)) {


hRslt = CreateFileMoniker(wcsPath, &pmk);
if(SUCCEEDED(hRslt))
hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello);

if(SUCCEEDED(hRslt)) {

// print a string out
pHello->PrintSz(wcsT);

Sleep(2000);
ulCnt = pHello->Release;
}
else
printf(\"Failure to connect, status: %lx\", hRslt);

// Tell OLE we are going away.
CoUninitialize;
}

return(0);
}


初级黑客

#!/usr/local/bin/perl
$msg=\"Hello, world.\\n\";
if ($#ARGV >= 0) {
while(defined($arg=shift(@ARGV))) {
$outfilename = $arg;
open(FILE, \">\" . $outfilename) || die \"Can\'t write $arg: $!\\n\";
print (FILE $msg);
close(FILE) || die \"Can\'t close $arg: $!\\n\";
}
} else {
print ($msg);
}
1;

中级黑客

#include <stdio.h>
#define S \"Hello, World\\n\"
main{exit(printf(S) == strlen(S) ? 0 : 1);}

资深黑客

% cc -o a.out ~/src/misc/hw/hw.c
% a.out

大师级黑客

%echo \"Hello, world.\"

初级经理

10 PRINT \"HELLO WORLD\"
20 END

中级经理

mail -s \"Hello, world.\" bob@b12
Bob, could you please write me a program that prints \"Hello, world.\"?
I need it by tomorrow.
^D

高级经理

% zmail jim
I need a \"Hello, world.\" program by this afternoon.

高管

% letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout


原文地址：

https://github.com/SuperPaintman/the-evolution-of-a-go-programmer

https://www.ariel.com.au/jokes/The_Evolution_of_a_Programmer.html

4月23日晚8点，欢迎来到CSDN直播间，与资深行业专家雷明老师一起探讨机器学习所必须掌握的数学知识。

为了写论文给 Linux “投毒”，导致整个大学都被 Linux 拉黑！