CODEWITHSUNDEEP
phpimageresize
Frank
Frank

Reputation: 1864

PHP image resize black background - change colour

So I am using this code to resize an image on the fly and create a copy of it.

function ak_img_resize($target, $newcopy, $w, $h, $ext) {
    list($w_orig, $h_orig) = getimagesize($target);
    $scale_ratio = $w_orig / $h_orig;
    if (($w / $h) > $scale_ratio) {
           $w = $h * $scale_ratio;
    } else {
           $h = $w / $scale_ratio;
    }
    $img = "";
    $ext = strtolower($ext);
    if ($ext == "gif"){ 
      $img = imagecreatefromgif($target);
    } else if($ext =="png"){ 
      $img = imagecreatefrompng($target);
    } else { 
      $img = imagecreatefromjpeg($target);
    }
    $tci = imagecreatetruecolor($w, $h);
    // imagecopyresampled(dst_img, src_img, dst_x, dst_y, src_x, src_y, dst_w, dst_h, src_w, src_h)
    imagecopyresampled($tci, $img, 0, 0, 0, 0, $w, $h, $w_orig, $h_orig);
    imagejpeg($tci, $newcopy, 80);
}

But what I don't like is it gives a default black background. How could I change this black background to something like, white?

Here it is:

enter image description here

Upvotes: 1

Views: 1544

Answers (1)

user142162
user142162

Reputation:

After you initialize $tci, you can use imagefill() and imagecolorallocate() to fill the image with white:

$white = imagecolorallocate($tci, 255, 255, 255);
imagefill($tci, 0, 0, $white);

Note: this will only work if the source image uses transparent pixels.

Upvotes: 2

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