root@green-blog:~$ view-post --id 15

<?php



function imageToAscii($imagePath, $newWidth = 100) {

    

    if (!file_exists($imagePath)) {

        return "Image not found!";

    }



    

    $imageInfo = getimagesize($imagePath);

    $mime = $imageInfo['mime'];



    // detect file type

    switch ($mime) {

        case 'image/jpeg':

            $image = imagecreatefromjpeg($imagePath);

            break;

        case 'image/png':

            $image = imagecreatefrompng($imagePath);

            break;

        case 'image/gif':

            $image = imagecreatefromgif($imagePath);

            break;

        default:

            return "Unsupported image type!";

    }



    $width = imagesx($image);

    $height = imagesy($image);



    // calcuating height

    $aspectRatio = $height / $width;

    $newHeight = intval($aspectRatio * $newWidth * 0.55); //a random number for ratio.



    // resize

    $resized = imagecreatetruecolor($newWidth, $newHeight);

    imagecopyresampled($resized, $image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);



    // ASCII characters (from dark to light)

    $chars = "@%#*+=-:. ";



    $ascii = "";



    for ($y = 0; $y < $newHeight; $y++) {

        for ($x = 0; $x < $newWidth; $x++) {

            $rgb = imagecolorat($resized, $x, $y);



            $r = ($rgb >> 16) & 0xFF;

            $g = ($rgb >> 8) & 0xFF;

            $b = $rgb & 0xFF;



            // convert to grayscale

            $gray = ($r + $g + $b) / 3;



            // map to character

            $index = intval(($gray / 255) * (strlen($chars) - 1));

            $ascii .= $chars[$index];

        }

        $ascii .= "\n";

    }



    imagedestroy($image);

    imagedestroy($resized);



    return $ascii;

}