PHP在while循环中添加+1

Question

我有while循环，并且有论坛帖子。我想显示帖子数量（1,2 ..）。

让我告诉你我的想法

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

并显示为

------线程-------

------帖子-------

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

谢谢。不好的英语

Answer 1

$ 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

尝试：

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

变量必须在字符串之外。