php - 如何从 php 中的文件夹中仅提取 1 张图像？

Question

我有工作代码，它从动态创建的文件夹中提取所有图像。但我只想在我的显示页面中显示来自特定文件夹的 1 张图像。有什么建议么？我的代码：

<?php 
    $search_dir = "$directory/{$row['name']}{$row['hotel_address']}";
    $images = glob("$search_dir/*.jpg");
    sort($images);
    //display images
    foreach ($images as $img) {
        echo "<img src='$img' height='150' width='150' /> ";
    }

?>

Answer 1

您可以使用current从数组中获取第一张图像。

<?php 
$search_dir = "$directory/{$row['name']}{$row['hotel_address']}";
$images = glob("$search_dir/*.jpg");
sort($images);
//display one image:
echo "<img src='current($images)' height='150' width='150' /> ";
?>

Answer 2

您可以显示单个图像：

<?php 
    $search_dir = "$directory/{$row['name']}{$row['hotel_address']}";
    $images = glob("$search_dir/*.jpg");
    sort($images);

    // Image selection and display:

    //display first image
    if (count($images) > 0) { // make sure at least one image exists
        $img = $images[0]; // first image
        echo "<img src='$img' height='150' width='150' /> ";
    } else {
        // possibly display a placeholder image?
    }

?>

如果您想要随机图像，请执行以下操作：

    // Image selection and display:

    //display random image
    if (count($images) > 0) { // make sure at least one image exists

        // Get a random index in the array with rand(min, max) which is inclusive
        $randomImageIndex = rand(0, count($images)-1);
        $img = $images[$randomImageIndex]; // random image
        echo "<img src='$img' height='150' width='150' /> ";

    } else {
        // possibly display a placeholder image
    }