想做个小工具玩玩 结果遇到了中文乱码和、背景不能透明的问题,求大神帮忙看看是咋回事。原谅我是个小白
<code><?php header("content-Type: text/html; charset=Utf-8"); //1、创建画布 $im = imagecreatetruecolor(800,800);//新建一个真彩色图像,默认背景是黑色,返回图像标识符。另外还有一个函数 imagecreate 已经不推荐使用。 $red = imagecolorallocate($im,255,0,0); $str = iconv("gb2312","utf-8//IGNORE","大撒旦撒旦撒!hello,world"); imagestring($im,5,0,0,$str,$red);//参数说明:5-指文字的大小。函数 imagestring 不能写中文 //2、加载外部图片 $im_new = imagecreatefromjpeg("baidu.jpg");//返回图像标识符 $im_new_info = getimagesize("baidu.jpg");//取得图像大小,返回一个数组。该函数不需要用到gd库。 /*---- ****3、将加载的图片,复制到画布上 ****参数说明: $im:不用说,指的是画布; $im_new:源图片,也就是从外面加载进来的图像 (30,30):将加载进来的图像,放在画布中的位置,左上角 (0,0):表示加载的图片,从什么位置开始。(0,0)表示左上角起点,也可以只加载图片的一部分进来的 (*,*):用*表示,可以为原图片宽和高,也可以小于宽高,只截取一部分,与上面坐标一起使用,表示截取的部分 ******/ imagecopy($im,$im_new,30,30,0,0,$im_new_info[0],$im_new_info[1]);//返回布尔值 //3、输出图像 header("content-type: image/png"); imagepng($im);//输出到页面。如果有第二个参数[,$filename],则表示保存图像 //4、销毁图像,释放内存 imagedestroy($im); ?></code>
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想做个小工具玩玩 结果遇到了中文乱码和、背景不能透明的问题,求大神帮忙看看是咋回事。原谅我是个小白
<code><?php header("content-Type: text/html; charset=Utf-8"); //1、创建画布 $im = imagecreatetruecolor(800,800);//新建一个真彩色图像,默认背景是黑色,返回图像标识符。另外还有一个函数 imagecreate 已经不推荐使用。 $red = imagecolorallocate($im,255,0,0); $str = iconv("gb2312","utf-8//IGNORE","大撒旦撒旦撒!hello,world"); imagestring($im,5,0,0,$str,$red);//参数说明:5-指文字的大小。函数 imagestring 不能写中文 //2、加载外部图片 $im_new = imagecreatefromjpeg("baidu.jpg");//返回图像标识符 $im_new_info = getimagesize("baidu.jpg");//取得图像大小,返回一个数组。该函数不需要用到gd库。 /*---- ****3、将加载的图片,复制到画布上 ****参数说明: $im:不用说,指的是画布; $im_new:源图片,也就是从外面加载进来的图像 (30,30):将加载进来的图像,放在画布中的位置,左上角 (0,0):表示加载的图片,从什么位置开始。(0,0)表示左上角起点,也可以只加载图片的一部分进来的 (*,*):用*表示,可以为原图片宽和高,也可以小于宽高,只截取一部分,与上面坐标一起使用,表示截取的部分 ******/ imagecopy($im,$im_new,30,30,0,0,$im_new_info[0],$im_new_info[1]);//返回布尔值 //3、输出图像 header("content-type: image/png"); imagepng($im);//输出到页面。如果有第二个参数[,$filename],则表示保存图像 //4、销毁图像,释放内存 imagedestroy($im); ?></code>
乱码原因是因为 浏览器和文件字符集不一致
,你可以把最上面的header去掉,不去掉的话在浏览器将编码改成gb2312。
不能透明是因为你根本没设置,谈何透明。
透明系列函数是alpha,看下哪个是你需要
iconv("gb2312","utf-8//IGNORE","大撒旦撒旦撒!hello,world");
把这里面的gb2312换成gbk试试,gbk的范围更大点

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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