resize.php

<?php

function image_thumb($file, $width = 460, $height = 0, $save = true, $quality = 80)
{
    $qual = round(9 - ($quality / (100 / 9)));
    //log_message('debug',"Kalite: $quality $qual");
    $i = $file;
    $x = $width;
    $y = $height;

    if (is_file(FCPATH . $i)) {
        $thumb_marker = '_thumber';
        $parts = pathinfo($file);
        $tname = $parts['dirname'] . "/" . $parts['filename'] . $thumb_marker . "_" . $width . "." . $parts['extension'];

        list($w, $h, $t) = getimagesize($i);
        if (in_array($t, array(1, 2, 3))) {
            if ($y == 0) {
                $y = (int)($x * $h / $w);
            }
            if (($w / $h) >= ($x / $y)) {
                $b = ceil($x * $h / $w);
                $a = ceil($w * $b / $h);
            } else {
                $a = ceil($w * $y / $h);
                $b = ceil($a * $h / $w);
            }
            $bx = ceil(($y - $b) / 2);
            $ax = ceil(($x - $a) / 2);

            if (IMAGE_THUMB_CONTROL && is_file(FCPATH . $tname)) {
                return $tname;
            } else {
                $source = imagecreate($w, $h);
                switch ($t) {
                    case 1:
                        $source = imagecreatefromgif($i);
                        break;
                    case 2:
                        $source = imagecreatefromjpeg($i);
                        break;
                    case 3:
                        $source = imagecreatefrompng($i);
                        break;
                }
                $thumb = imagecreatetruecolor($x, $y);
                if ($t == 3) {
                    imagealphablending($thumb, false);
                    $alpha = imagecolorallocatealpha($thumb, 0, 0, 0, 127);
                    imagefill($thumb, 0, 0, $alpha);
                    imagesavealpha($thumb, true);
                } else {
                    $white = imagecolorallocate($thumb, 255, 255, 255);
                    imagefill($thumb, 0, 0, $white);
                }

                imagecopyresampled($thumb, $source, $ax, $bx, 0, 0, $a, $b, $w, $h);

                if ($save !== true) {
                    switch ($t) {
                        case 1:
                            header('Content-Type: image/gif');
                            imagegif($thumb, NULL);
                            break;
                        case 2:
                            header('Content-Type: image/jpeg');
                            imagejpeg($thumb, NULL, $quality);
                            break;
                        case 3:
                            header('Content-Type: image/png');
                            imagepng($thumb, NULL, $qual);
                            break;
                    }

                    imagedestroy($thumb);
                    return true;
                } else {
                    switch ($t) {
                        case 1:
                            imagegif($thumb, FCPATH . $tname);
                            break;
                        case 2:
                            imagejpeg($thumb, FCPATH . $tname, $quality);
                            break;
                        case 3:
                            imagepng($thumb, FCPATH . $tname, $qual);
                            break;
                    }
                    imagedestroy($thumb);
                    return $tname;
                }
            }

        } else {
            return false;
        }
    } else {
        return false;
    }
}