<?php
       
$dest_rep = 'to_crop/output/'; // Output directory
$basefiles = 'to_crop/input/'; // Input directory
$files = scandir($basefiles);
$count = 0;
$max_size = 576; // Max dimension

foreach($files AS $useless => $name)
{
    if($name != '.' && $name != '..')
    {
        $source_file = $basefiles . $name;
        $dest_file = $dest_rep . 'painting_romanticism_' . $count . '.png'; // Change 'painting_romanticism_' for the prefix you want
        
        if(substr($name,-4) == '.png')
        {  
            $img = @imagecreatefrompng($source_file);
        }
        elseif(substr($name,-4) == '.jpg' || substr($name,-5) == '.jpeg')
        {  
            $img = imagecreatefromjpeg($source_file);
        }
        elseif(substr($name,-5) == '.webp')
        {  
            $img = imagecreatefromwebp($source_file);
        }
        elseif(substr($name,-5) == '.avif')
        {  
            $img = imagecreatefromavif($source_file);
        }           
        
        $original_x = imagesx($img);
        $original_y = imagesy($img);
       
        // Optimal ratio
        $ratio = ($original_x / $original_y) > 1 ? 169 : 916; 
        $new_x = floor($original_x / 8) * 8;
        $new_y = floor($original_y / 8) * 8;
        
        if($ratio == 169)
        {
            $true_ratio = $original_x / $original_y;                    
            if($original_x > $max_size)
            {
                $ratio_crop = $original_x / $max_size;
                $new_x = $max_size;
                $new_y = round($original_y / $ratio_crop);
                $new_y = floor($new_y / 8) * 8;
            }                    
        }
        else
        {
            $true_ratio = $original_y / $original_x;
            if($original_y > $max_size)
            {
                $ratio_crop = $original_y / $max_size;
                $new_y = $max_size;
                $new_x = round($original_x / $ratio_crop);
                $new_x = floor($new_x / 8) * 8;
            }
        } 

        if($new_x > 300 && $new_y > 300)   
        {    
            $dst_file = imagecreatetruecolor($new_x, $new_y);
            if(substr($name,-4) == '.png' || substr($name,-5) == '.webp')
            {  
                imagecolortransparent($dst_file, imagecolorallocatealpha($dst_file, 0, 0, 0, 127));
                imagealphablending($dst_file, false);
                imagesavealpha($dst_file, true);
            }               
            imagecopyresampled($dst_file, $img, 0, 0, 0, 0, $new_x, $new_y, $original_x, $original_y); 
            imagepng($dst_file, $dest_file);  
        }    
    }
}

?>