Question

已解决：请参阅我的答案，了解我如何解决问题。

我不确定这是否可行，因为我对阵列了解不多但是什么都没有。

我想在我的网站上添加广告。

我想我可以找到一种方法来实现多维数组来控制内容。

我想出了这个：

$ads = array(
            "ad1" => array(
               title => "Advertisement Title",
               url => "http://example.com",
               image => "http://example.com/images/example.jpg",
               description => "Advertisement Description"),
            "ad2" => array(
               title => "Advertisement Title",
               url => "http://example.com",
               image => "http://example.com/images/example.jpg",
               description => "Advertisement Description"),
            "ad3" => array(
               title => "Advertisement Title",
               url => "http://example.com",
               image => "http://example.com/images/example.jpg",
               description => "Advertisement Description")
);

我通过语法检查程序运行此代码并且没有错误，所以我认为我至少在正确的轨道上。

我不明白的是如何编写随机选择其中一个广告的foreach循环。

我是否需要将"ad1" => array(更改为ad[1] => array(？

我还没有使用过多的阵列，所以我不知道如何针对每个循环定位一个特定部分。

我希望得到一个foreach循环，输出类似于：

<a href="UrlFromArray"><img src="ImageSrcFromArray" alt="TitleFromArray">

<br>

<p>DescriptionFromArray</p>

这可以实现吗？

EDIT＆amp; UPDATE：

function displayAds728x90() {
 $ads = array(
             "ad1" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description"),
             "ad2" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description"),
             "ad3" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description")
            );
            $randomAd = array_rand($ads);
             echo '<a href="'.$randomAd->url.'" target="_blank">';
             echo '<img src="'.$randomAd->image.'" alt="'.$randomAd->title.'">';
             echo '</a>';
             echo '<p>';
             echo $randomAd->description;
             echo '</p>';

}
displayAds728x90();

根据Dynelight给出的答案，我已经提出了上述代码。

现在我唯一的问题是我收到以下错误：

Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 23
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 24
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 24
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 27

您知道我的完整代码是哪个行号：

<img src="http://www.example.com/images/your_banner_here.png">

<?php
function displayAds728x90() {
 $ads = array(
             "ad1" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description"),
             "ad2" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description"),
             "ad3" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description")
            );
            $randomAd = array_rand($ads);
             echo '<a href="'.$randomAd->url.'" target="_blank">';
             echo '<img src="'.$randomAd->image.'" alt="'.$randomAd->title.'">';
             echo '</a>';
             echo '<p>';
             echo $randomAd->description;
             echo '</p>';

}
displayAds728x90();
?>

有关导致这些错误的原因的任何想法？

更新2：

编辑以下部分并添加了缺少的代码：

$randomAd = array_rand($ads);
             echo '<a href="'.$ads->$randomAd->url.'" target="_blank">';
             echo '<img src="'.$ads->$randomAd->image.'" alt="'.$ads->$randomAd->title.'">';
             echo '</a>';
             echo '<p>';
             echo $ads->$randomAd->description;
             echo '</p>';

在var_dump上执行$ads并获得以下内容：

array(3) { ["ad1"]=> array(4) { ["title"]=> string(19) "Advertisement Title" ["url"]=> string(18) "http://example.com" ["image"]=> string(37) "http://example.com/images/example.jpg" ["description"]=> string(25) "Advertisement Description" } ["ad2"]=> array(4) { ["title"]=> string(19) "Advertisement Title" ["url"]=> string(18) "http://example.com" ["image"]=> string(37) "http://example.com/images/example.jpg" ["description"]=> string(25) "Advertisement Description" } ["ad3"]=> array(4) { ["title"]=> string(19) "Advertisement Title" ["url"]=> string(18) "http://example.com" ["image"]=> string(37) "http://example.com/images/example.jpg" ["description"]=> string(25) "Advertisement Description" } }

关闭上面发布的错误的完整页面代码现在：

 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 23
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 23
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 24
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 24
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 24
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 24
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 27
 Sorry, an error happened. Please try again later
Error 8 : Trying to get property of non-object in /home/jollyrogerpcs/public_html/includes/adRotator728_90.php on line 27

Answer 1

foreach函数用于迭代数组的所有元素。您想获得数组的随机元素。看看这个函数，也许对你有用：

http://php.net/manual/en/function.array-rand.php

你随机获得elemenet并引用它：

<?php $random_element = array_rand ( $ads); ?>

<a href="<?php echo $ads->$random_element->url ?>">
<img src="<?php echo $ads->$random_element->image ?>" alt="<?php echo $ads->$random_element->title ?>"></a>
<p><?php echo $ads->$random_element->description; ?></p>

Answer 2

我明白了。我发布这个作为答案，以防万一其他用户有类似的问题，可以使用我的问题和答案作为帮助：）

完整的工作代码：

function displayAds728x90() {
 $ads = array(
             "ad1" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com/1",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description"),
             "ad2" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com/2",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description"),
             "ad3" => array(
                'title' => "Advertisement Title",
                'url' => "http://example.com/3",
                'image' => "http://example.com/images/example.jpg",
                'description' => "Advertisement Description")
            );
            $randomAd = array_rand($ads);
             echo '<a href="'.$ads[$randomAd]['url'].'" target="_blank">';
             echo '<img src="'.$ads[$randomAd]['image'].'" alt="'.$ads[$randomAd]['title'].'">';
             echo '</a>';
             echo '<p>';
             echo $ads[$randomAd]['description'];
             echo '</p>';

}
 displayAds728x90();

我没有使用$ads->$randomAd->description定位键，而是使用$ads[$randomAd]['description']定位它们并且它有效：）

PHP内容循环器使用多维数组

2 个答案: