PHP在函数输出上生成数字“1”。我以前从未见过这样做过

时间:2008-12-12 04:37:12

标签: php

function holiday_hitlist($tablename, $hit_user){

    global $host, $user, $pass, $dbname;

    $link = mysql_connect($host, $user, $pass, $dbname);

    print "<div class=\"hit_list\">
            <h3>My Holiday Hitlist</h3>
            <p>Five things I want the most, based on my desirability ratings.<br/>You can't go wrong with this stuff!</p>
            <ol>";

    $sql = "SELECT title, URL, price FROM $dbname.$tablename WHERE user='$hit_user' AND rank >= 3 ORDER BY date DESC LIMIT 5";
    $result = mysql_query($sql) or die ("Couldn't retrieve holiday hit list for this user. " . mysql_error());
    while($row = mysql_fetch_array($result)) {
        $title = $row['title'];
        $url = $row['URL'];
        $price = "$" . $row['price'];
        $output = print "<li><a href=\"$url\" target=\"_blank\">$title</a> $price</li>";
    }
    print "</ol></div>";
    return $output;
}

在HTML页面上,它会在关闭div标记后面紧跟“1”。为什么?

3 个答案:

答案 0 :(得分:9)

见行

$output = print "<li><a href=\"$url\" target=\"_blank\">$title</a> $price</li>";

你应该在$ output =

之后删除打印件

或许你只需要删除$ output =

我不太清楚你的意图。

为了解释,$ output正在获得print“...”的返回值

答案 1 :(得分:6)

来自php.net参考:

“返回值

始终返回1。“

http://ca.php.net/manual/en/function.print.php

您应该将$ output指定为您想要的输出,然后使用print显示该输出。

答案 2 :(得分:2)

根据你所写的内容,我认为你正在做的事情如下:

function holiday_hitlist($tablename, $hit_user){
  /* connections etc

  */

  while($row = mysql_fetch_array($result)) {
    $title = $row['title'];
    $url = $row['URL'];
    $price = "$" . $row['price'];
    $output = print "<li><a href=\"$url\" target=\"_blank\">$title</a>$price</li>";
  }
  print "</ol></div>";
  return $output;
}

print holiday_hitlist("mytab","myuser");

或者

$somevar = holiday_hitlist("mytab","myuser");
print $somevar;

您正在“打印”返回的值这一事实确实存在问题。在上面的例子中为什么要返回什么?你也可以;

a)将该函数设置为只执行某些操作并且不返回任何内容的例程。 (即:只需删除返回$ output 并打印打印holiday_hitlist()

b)创建一个返回所需数据的函数,然后用它做一些事情。

b)的一个例子是;

function holiday_hitlist($tablename, $hit_user){
  /* connections etc

  */

  while($row = mysql_fetch_array($result)) {
    $title = $row['title'];
    $url = $row['URL'];
    $price = "$" . $row['price'];
    $output .= "<li><a href=\"$url\" target=\"_blank\">$title</a>$price</li>";
  }
  return $output;
}

$somevar = holiday_hitlist("mytab","myuser");

print "<div class=\'hit_list\'>
<h3>My Holiday Hitlist</h3>
<p>Five things I want the most, based on my desirability ratings.<br/>You can't go wrong with this stuff!</p>
<ol>
$somevar
</ol></div>";

上述功能有助于将演示文稿(即:HTML)与您的数据分开。虽然在这个例子中不完美,但你可以在一个块中看到所有的html,并且可以更容易地调试它。

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