PHP多个随机图像调用

Question

i am trying to call more than one image to the screen at a time from a folder, currently this PHP i have coded only calls one. Any ideas would be very much appreciated...

<?php


// Indicate the location of your images 
$root = '';
// use if specifying path from root
$path = 'images/';

function getImagesFromDir($path) {
    $images = array();
    if ( $img_dir = @opendir($path) ) {
        while ( false !== ($img_file = readdir($img_dir)) ) {
            // Checks for file formats
            if ( preg_match("/(\.gif|\.jpg|\.png)$/", $img_file) ) {
                $images[] = $img_file;
            }
        }
        closedir($img_dir);
    }
    return $images;
}

function getRandomFromArray($ar) {
    mt_srand( (double)microtime() * 1000000 ); // php 4.2+ not needed
    $num = array_rand($ar);
    return $ar[$num];
}


// Collects list of images from directory 
$imgList = getImagesFromDir($root . $path);

$img = getRandomFromArray($imgList);
?> 

Answer 1

Not very elegant method, but it's good start for you.

$imageCount = 3; // show 3 images
$img = array();
for ($i=0; $i<$imageCount; $i++){    
   $img[] = getRandomFromArray($imgList);
}

And now you have three random images inside your $img array. You can additionally check if you don't have the same images.

There are many ways to achieve your task, maybe introduce that functionality inside getRandomFromArray method?