![]() ![]() Note the use of the header() function when outputting to the browser. Search for the page on the "header()" function on this website for more details.Įxample: Let's say that you are outputting to a jpeg using imagejpeg(). This page actually clearly shows the difference between "outputting" to a browser and "saving" to a file, but the code comments don't clearly state what the difference is. Many of the examples programmers illustrate on the web output to the browser and do not save anything to the file system, therefore, the header() function seems essential to image manipulation for the first-time user of the GD library. If you are outputting to the browser check your imagejpeg() for parameter 2. The browser is expecting image information therefore, if you are outputting to a file, you don't need a header() function at all. ![]() Solution: Start with removal of the header() function if you plan to output to a file. At the same time your manipulated image saves to a file. Problem: The URL of the current page is displaying in the browser window as an image file. So, let's suppose you have a form where a user can upload an image, and you have to scale it and save it into your database. Here's a complete solution to READ any image (gif jpg png) from the FILESYSTEM, SCALE it to a max width/height, SAVE the scaled image to a BLOB field keeping the original image type. hope this will save time to other people! I didn't find any example like this on the Web, so I mixed pieces together. Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Errors Exceptions Generators References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Filesystem Security Database Security Error Reporting Using Register Globals User Submitted Data Magic Quotes Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Safe Mode Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Credit Card Processing Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search ![]()
0 Comments
Leave a Reply. |