Home Backend Development PHP Tutorial PHP's GD function imagettftext() should pay attention to the default character encoding_PHP tutorial

PHP's GD function imagettftext() should pay attention to the default character encoding_PHP tutorial

Jul 13, 2016 pm 05:37 PM
imagettftext php function Function exist character Small develop Notice of coding want default

I am developing a small function these days, which is similar to a personalized forum signature. It automatically generates a picture with text on it based on member information. The stitching of images can be done using functions such as imagecopy() and imagecopyresampled(). However, when it comes to drawing text, I encounter a problem. The text template is saved in a text file. The program first reads the file and replaces the variables in it with data, and then uses the imagettftext() function to draw it on the picture. Unfortunately, the drawn picture is garbled @_@ ...So I searched for related issues on Google and found that most people were saying that the string passed in the imagettftext() function needs to be UTF-8 encoded, and the official PHP manual also clearly states "UTF-8 encoded string." It can be passed directly", but the problem is that the encoding of the template file is originally UTF-8, which is a bit puzzling. In desperation, I used EmEditor to open the original template file, tried converting it to different encodings, and compared it with the garbled code output by GD. It turned out that when I converted to EUC-JP encoding, it actually matched the garbled code output by GD... that is to say , the default encoding of GD on the server here is EUC-JP, and that is a Japanese encoding. I searched the settings of php.ini and found no relevant options, so another question came up. Where is this default encoding set? It was Si Wen's brother Niu who discovered that there was a "--enable-gd-jis-conv" parameter in the PHP compilation parameters that was very suspicious. Google found that many garbled problems were related to this compilation parameter... Official parameter description It is "GD: Enable JIS-mapped Japanese font support.", which means that GD supports Japanese-encoded fonts (damn it, why is there no compilation option to support Chinese-encoded fonts...Does PHP also discriminate against nationality = =b), to put it bluntly, enable it If this option is enabled, GD will map the parts greater than 127 in the TTF font library (that is, the parts that do not belong to the standard Latin font library) according to the order of Japanese JIS, and then it will naturally become garbled when used to map Chinese fonts. Without further ado, remove this option and recompile, and the problem will be solved. After removing this option, the default encoding of imagettftext() becomes UTF-8, and Chinese can be displayed normally~

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/486556.htmlTechArticleI am developing a small function these days, which is similar to a forum personalized signature, and automatically generates a picture based on member information. The one with text on it. Image stitching uses imagecopy() and...
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

In this chapter, we are going to learn the following topics related to routing ?

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

Validator can be created by adding the following two lines in the controller.

See all articles