不能让$ cnt ++工作 [英] Can't get $cnt++ to work

问题描述

我有一个简单的点击计数器。如果我用#cnt = $ cnt + 1替换$ cnt ++;

，它就有效;

我不明白为什么这不起作用。任何想法？

if（file_exists（" counter.dat"））{

$ f = fopen（" counter.dat"，" r"）;

$ cnt = fread（$ f，10）;

// echo" \ n"，" count 1 ="，$ cnt，" \ n" ;;

fclose（$ f）;

// $ cnt ++; DOESN''T WORK !!!

$ cnt = $ cnt + 1;

// echo" \ n"，" count 2 ="， $ cnt，" \ n";

$ f = fopen（" counter.dat"，" w"）;

fwrite（$ f，$ cnt）;

fclose（$ f）;

printf（\ n％d人们访问过此页面\ n，$ cnt）;

}


谢谢，

Wilfred

I have a little simple hit counter. It works if I replace $cnt++;
with #cnt = $cnt + 1;
I can''t see why this doesn''t work. Any ideas?
if(file_exists("counter.dat")) {
$f = fopen("counter.dat", "r");
$cnt = fread($f, 10);
//echo "\n", "count 1 = ", $cnt, "\n";
fclose($f);
//$cnt++; DOESN''T WORK!!!
$cnt = $cnt + 1;
//echo "\n", "count 2 = ", $cnt, "\n";
$f = fopen("counter.dat", "w");
fwrite($f, $cnt);
fclose($f);
printf("\n%d people have visited this page\n", $cnt);
}

thanks,
Wilfred

推荐答案

cnt ++;

，＃cnt =

cnt++;
with #cnt =

cnt + 1;

我不明白为什么这不是工作。任何想法？

if（file_exists（" counter.dat"））{

cnt + 1;
I can''t see why this doesn''t work. Any ideas?
if(file_exists("counter.dat")) {

f = fopen（" counter.dat"， r,;

f = fopen("counter.dat", "r");

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