php PHP在while循环中添加+1

Question

提问by harisdev

I have while loop and in that there's forum posts.I want to show number of posts (1,2..).

我有 while 循环，其中有论坛帖子。我想显示帖子数（1,2 ..）。

Let me show you what i think

让我告诉你我的想法

while($some = mysql_fetch_array($forum_posts)){
echo 'Number of post is $num++';
}

and show like

并显示像

------ Thread -------

- - - 线 - - - -

------ Posts -------

------ 帖子 -------

Text of post            1.
Text of post            2.
Text of post            3.

Thanks.Sorry for bad english

谢谢。抱歉英语不好

Answer 1

$num must be initialized!

$num 必须初始化！

$num = 1;
while($some = mysql_fetch_array($forum_posts)){
echo 'Number of post is '.($num++);
}

Answer 2

$num = 0;

while($some = mysql_fetch_array($forum_posts)){
    echo 'Number of post is '.++$num;
}

Answer 3

Try with:

尝试：

$num = 1;
while($some = mysql_fetch_array($forum_posts)){
   echo 'Number of post is ' . ($num++) . '.';
}

Variables have to be outside string.

变量必须在字符串之外。