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Image Manipulation

Results 21-40 of 42
Simple Image Resize in GD
Were going to be creating it in a function, so that we can re-use this wherever we need to. This particular function saves the thumbnail file to a directory on the server, you could actually skip saving the file and just print out the image itself if you would prefer to do that.
(3 ratings)
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Views1790
Create Thumbnail Images using PHP
This tutorial will describe how to create thumbnail images on the fly using PHP. Furthermore you will learn how to process a whole folder of images and create their thumbnails. Since this requires the GD library, you will need an installation of PHP with at least GD 2.0.1 enabled.
(0 ratings)
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Views1283
Dynamic Image Generation using PHP
Creating images on the fly can be a very useful skill. In this tutorial we will show you how to get quite interesting and useful effects using image handling functions. We will review two practical tasks: creating security images (captcha) on the fly and building a bar chart using numerical values retrieved from MySQL database.
(3 ratings)
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Views1514
Converting RGB values from/to HTML hex representation.
This article provides two functions for converting HTML color (like #AAED43) to three RGB values ($r = 170, $g = 237, $b = 67) and converting RGB values to HTML color.
(0 ratings)
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Views961
Making thumbnails with PHP
A simple 2 file, 2-part tutorial about how to upload a picture of .gif or .jpg format and how to store that photo in a folder and also make a thumbnail of that picture.
(6 ratings)
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Views3567
PHP Create Image Thumbnail
In this tutorial you will learn how to generate thumbnails from form uploaded images using GD php image library. The image ratio is maintained, so the thumbnail images will not be deformed. An image verification is performed before uploading and the image size is verified.
(13 ratings)
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Views3582
Create CAPTCHA Images - Tutorial
Worried about bots? Then create CAPTCHA images to prevent bots from taking advantage of your site. You may be wondering what a CAPTCHA image is. Here's a brief synopsis from Wikipedia: A captcha (an acronym for "completely automated public Turing test to tell computers and humans apart") is a type of challenge-response test used in computing to determine whether or not the user is human. Captchas are used to prevent bots from using various types of computing services. Applications include preventing bots from taking part in online polls, registering for free email accounts (which may then be used to send spam), and, more recently, preventing bot-generated spam by requiring that the (unrecognized) sender pass a captcha test before the email message is delivered.
(12 ratings)
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Views6033
PHP Thumbnail Generation Tutorial
This tutorial focuses on a thumbnail generation script. Rather than generating a smaller representation of the image, it cuts out a section of the photograph to create an obscure snapshot of the photo itself. The thumbnail's size is variable also, so the script be used across different sites to create different sized thumbnails where needed.
(1 ratings)
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Views1811
Image rotation with PHP
This article describes how you can rotate images in PHP. We deal with two examples, firstly rotating by 45 degrees and then by 90, going in to some depth to ensure you understand how the code is working. You might find this useful if you are, for example, building an online photo gallery and you want to rotate your pictures within PHP rather than having to rotate them on your computer. This is a powerful feature to have.
(15 ratings)
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Views4415
An easy way of creating Image & Adding Fonts to it.
Creating an image with PHP & GD library on the Fly , and add fonts to decorate it .Could be used as hit counter or just to show your database stats on main page .
(3 ratings)
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Views3155
Dynamic Images
Create dynamic images with the GD library. Tutorial shows you how to create a little man holding a sign that displays various messages (such a visitor's IP address and user-inputted text).
(3 ratings)
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Views1692
Creating an Image Gallery
the goal of this tutorial is to give the reader an idea of how to construct a basic/dynamic image gallery from start to finish, not to imply that this is the only way, or even the best way to build a gallery; just a simple approach without all the bells and whistles. at the time of writing, this tutorial assumes a version of PHP >= 4.3 and GD 2.
(12 ratings)
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Views10768
Simple Image Rotater
This is the easiest tutorial on how to rotate images by random. Code included.
(9 ratings)
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Views3386
Convert Images to Thumbnailed Images
This tutorial will teach you the basics of auto generating your large image into condensed thumbnailed images using PHP. Complete code presented.
(0 ratings)
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Views6770
Creating an image gallery
This short tutorial will show you how to make a basic image gallery using PHP. The complete code presented.
(9 ratings)
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Views10609
Bar Charts With GD
This is a comprehensive tutorial on how the graphics capabilities of PHP can be used to create simple bar charts in GIF and PNG format. Each example includes a graphical chart along with source code.
(0 ratings)
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Views4476
Data Goes In, Data Comes Out This Time it's Binary
This setp-by-step article explains how to create a database-driven image uploading and display system in PHP. The example database used being MySQL, it also discusses possible modifications for MS SQL and Oracle. Some of the main topics include: Create database table with a field defined to hold binary data, Get your binary data into your table through a form-based file upload script, and Retrieve your binary data and display it to the user.
(7 ratings)
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Views9546
Upload and Resize an Image
PHP has the ability to upload files such as documents or images using the multipart/form-data protocol, but how do you use this and how do you resize the images after they are uploaded to create thumbnails or image repository, etc. This tutorial along with full source code shows you how.
(18 ratings)
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Views34174
Binary Data + MySQL + PHP
This tutorial will show how you can store the data via the HTML forms "File" feature in your MySQL database and how you can access and use this data in your webproject.
(0 ratings)
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Views6423
Interactive Maps with PHP
This tutorial shows you how to create an interactive image maps using PHP and the GD library. It explains a method to zoom a portion of an image by using PHP and gif files.
(3 ratings)
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Views5152
Results 21-40 of 42