Anything related to imagecreatefrompng PHP function for creating an image from file or URL
imagecreatefrompng is a PHP function that returns an image identifier representing the image obtained from file or URL
Questions tagged [imagecreatefrompng]
109 questions
23
votes
3 answers
Create a transparent png file using PHP
Currently I would like to create a transparent png with the lowest quality .
The code:
user782104
- 13,233
- 55
- 172
- 312
14
votes
3 answers
Trying to extract pixel values from a given PNG image
Trying to understand PNG format.
Consider this PNG Image:
The Image is taken from here
In Hex Editor , it looks like this:
89 50 4E 47 0D 0A 1A 0A 00 00 00 0D 49 48 44 52 00 00 00 80 00 00 00 44 08 02 00 00 00
C6 25 AA 3E 00 00 00 C2 49 44 41…
gpuguy
- 4,607
- 17
- 67
- 125
13
votes
3 answers
Can I use a URL as the source for imagecreatefromjpeg() without enabling fopen wrappers?
I know it’s possible to use imagecreatefromjpeg(), imagecreatefrompng(), etc. with a URL as the ‘filename’ with fopen(), but I'm unable to enable the wrappers due to security issues. Is there a way to pass a URL to imagecreatefromX() without…
iRector
- 1,935
- 4
- 22
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8
votes
6 answers
PHP imagecopy with transparent background
I use this code to create an image from another png image, the background is black by default. My question is how to set a transparent background?
$input = imagecreatefrompng('image.png');
$output = imagecreatetruecolor(50, 50);
imagecopy($output,…
2by
- 1,083
- 5
- 22
- 39
4
votes
4 answers
How to allow upload transparent gif or png with php
I have this function below to allow me to resize my uploaded image,
function resize_image($image,$width,$height,$scale)
{
list($imagewidth, $imageheight, $imageType) = getimagesize($image);
$imageType = image_type_to_mime_type($imageType);
…
Run
- 54,938
- 169
- 450
- 748
3
votes
2 answers
PHP imagecreate() PNG from any commonly used file-format?
I currently have an image upload input that only accepts PNG, JPG/JPEG, GIF images.
If the file is valid, it then proceeds to create a thumbnail from the image using
imagecreatefrompng()
imagecopy()
imagejpg()
This works fine, but ONLY for png…
Aaron
- 1,956
- 5
- 34
- 56
3
votes
2 answers
imagecreatefrompng error - how to detect and handle?
In my script, I have the following lines:
$test = @imagecreatefrompng($name);
if ($test) { ... }
I am certain that $name represents an existing file on the disk, but I must handle cases where that file is not a valid PNG file (either because of a…
Victor Nicollet
- 24,361
- 4
- 58
- 89
3
votes
2 answers
Can't Create QR With Text Below
I use this codes for making qr code with custom text below. I tried several methods but I always failed. I need to help.
// Set the content-type
header('Content-Type: image/png');
header("Content-Disposition: filename='sample.png'");
$main =…
eneskomur
- 91
- 1
- 13
3
votes
2 answers
Crop a Square Image of 450x450 into 9 pieces of 150x150 each, using PHP
I have an source image of 450x450 px. And i want to crop it into 9 peices of 150x150 each using PHP.
I am using the following code.
I am getting 9 images, but cropping is not appropriate.
Here is the screen shot :
Last one is the source image i am…
jackkorbin
- 491
- 7
- 22
3
votes
1 answer
imagecreatefrompng() from base64 code?
is there a way to create an image with imagecreatefrompng() with this base 64 PNG code in PHP?
Jordan Jones
- 127
- 1
- 2
- 8
3
votes
1 answer
PHP imagecreatefrompng losing color
I'm doing a simple load of an image using imagecreatefrompng.
The background of the image is #E5DDBB. Using the code below, it renders the image but the background is now #DED6AD.
http://www.letslogic.com/test.php contains the following:
letslogic.com
- 27
- 7
3
votes
1 answer
Find White Pixel Lines
I want to replace all white pixel from a completely white column with other color and if I have a black pixel on column don't change anything, but I don't know where is the problem...
Here is the code:
function findLines() {
$blank = 1;
…
Alex F
- 41
- 3
2
votes
1 answer
PHP: Transparent background
$c = 'johnny-bravo.png'; //transparent bg
$imagesize = getimagesize($c);
$background = imagecreatefrompng('background.png'); //background
$char = imagecreatefrompng($c);
imagealphablending($char, false);
imagesavealpha($char,…
Daniela Răducanu
- 47
- 2
- 8
2
votes
1 answer
Imagecreatefrompng() - Connection was reset error
I have installed a piece of code on a website, wich includes gd functions.
After debugging I came to a conclusion that the
$src = imagecreatefrompng($s);
is causing the server to respond: "Connection was reset"
Even if I change the code to:
$src =…
Ernest Marcinko
- 405
- 3
- 12
2
votes
1 answer
How to prevent having the "is not a valid image file" error when using GD function imagecreatefrom* in php?
I am using imagecreatefromgif / imagecreatefromjpeg / imagecreatefromjpeg functions with uploaded images and sometimes get an error (e.g. Warning: imagecreatefromgif(): ... is not a valid GIF file) when the image is corrupted. I read lots of posts…
user977191
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