当我尝试获取数组内容时，我得到“数组”而不是内容

When I try to get the array content I get "Array" instead of content.

The foreach function (if it's right, I couldn't try it until now) should then post the pictures.

<?php
    $slideshowdir = "./public/all/slideshow/";
    if (is_dir($slideshowdir)) {
        if ($dh = opendir($slideshowdir)) {                             
            while (($slides = readdir($dh)) !== false) {
               $possible_slides = $slideshowdir.array($slides);
            }
        }
    }

    foreach($possible_slides as $slide){
        $picture = file($slide);
            echo $picture;
     }
?>  

EDIT: Sorry, I wasn't 100% clear. The files I want to post are pictures.

EDIT: I solved the problem with the following code:

<?php
    $possible_slides = array();
    $slideshowdir = "./public/all/slideshow/";
    if (is_dir($slideshowdir)) {
        if ($dh = opendir($slideshowdir)) {                             
            while (($slide = readdir($dh)) !== false) {
                if (is_file ($slideshowdir.$slide)) {
                    $possible_slides[] = $slideshowdir.$slide;
                }
            }
        }
    }

    foreach($possible_slides as $slide){
        echo '<img src="'.$slide.'">';
    }       
?>  

Please read the documentation for file(). It returns an array of a file's contents, line by line.

What you might want to use instead is file_get_contents().

Also, your first loop looks fishy. I suppose you want to do this:

<?php
$possible_slides = array();
$slideshowdir = "./public/all/slideshow/";
if (is_dir($slideshowdir)) {
    if ($dh = opendir($slideshowdir)) {                             
        while (($slide = readdir($dh)) !== false) {
           if (is_file ($slideshowdir.$slide)) {
               $possible_slides[] = $slideshowdir.$slide;
           }
        }
    }
}

foreach($possible_slides as $slide){
    $picture = file_get_contents($slide);
    echo $picture;
}

Please note that I have added a check in the while loop to make sure only files are added to $possible_slides. This should filter out sub-directories, as well as . and ...

This part seems hinky: $slideshowdir.array($slides)

Are you sure you want to concatenate an array onto a string?

Change:

$possible_slides = $slideshowdir.array($slides);

To:

$possible_slides[] = $slideshowdir.array($slides);