Display all Images from a folder in php using for loop.

for($i=1;$i<=4;$i++)
{
    echo "<img src='image/$i.jpg' width='200px'>";
}

Count number of files from a folder.

$files = glob("image/*.jpg");
$filecount = count($files);
echo "There were $filecount files";

Display all images from a folder having any name.

$dir=opendir("image");
while($file=readdir($dir))
{
    echo "<img src='image/$file' width='200px'>";
}