是计数评论的脚本。这有效,但现在我想要评论0,它只是显示评论,而不是0评论。
有什么建议吗?
<?php
include "con_config_hapshout.php";
$query3 = "SELECT COUNT(comment) FROM comment WHERE msg_id='$id'";
$result3 = mysql_query($query3);
while($total = mysql_fetch_array($result3)){
echo "$total['COUNT(comment)'] comment";
}
?>
答案 0 :(得分:2)
<?php
include "con_config_hapshout.php";
$query3 = "SELECT IF(COUNT(comment) = 0, '', COUNT(comment)) AS comment_count
FROM comment WHERE msg_id='$id'";
$result3 = mysql_query($query3);
while($total = mysql_fetch_array($result3)){
echo "$total['comment_count'] comment";
}
?>
答案 1 :(得分:1)
答案 2 :(得分:0)
你错误地使用PHP字符串 - 双引号字符串中的数组键引用不应该引用,除非你使用{}
语法。
echo "{$total['COUNT(comment)']} comment";
^--- ^--
或者更好的是,在查询中为计数添加别名,这样您以后就不必在PHP中使用这些丑陋的数组键:
SELECT COUNT(comment) AS cnt ...
and
echo $total['cnt'];