Solved

Make a solid black image

Posted on 2011-09-10
1
234 Views
Last Modified: 2012-05-12
In this question:

http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_27291199.html#a36515211

Everything is working great with the solution, but the black image involved is still a manual task, so I have a new question:

Given a random image, called image.jpg, how would you read the width and height and create  a solid black image of the same width and height and save it as image_black.jpg
0
Comment
Question by:hrolsons
1 Comment
 
LVL 10

Accepted Solution

by:
Derokorian earned 500 total points
ID: 36517136
<?php

list($width,$height) = getimagesize('image.jpg');
$blackimage = imagecreate($width,$height);
imagecolorallocate($blackimage,0,0,0);

imagejpeg($blackimage,'image_black.jpg');

Open in new window


For more info:
http://www.php.net/imagecreate
http://www.php.net/getimagesize
http://www.php.net/imagecolorallocate
http://www.php.net/imagejpeg

HTH
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article will explain how to display the first page of your Microsoft Word documents (e.g. .doc, .docx, etc...) as images in a web page programatically. I have scoured the web on a way to do this unsuccessfully. The goal is to produce something …
Introduction This article is intended for those who are new to PHP error handling (https://www.experts-exchange.com/articles/11769/And-by-the-way-I-am-New-to-PHP.html).  It addresses one of the most common problems that plague beginning PHP develop…
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question