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类似于下面这样
1.利用GD库函数生成图片，并在图片上写指定字符
imagecreatetruecolor 新建一个真彩色图像
imagecolorallocate 为一幅图像分配颜色(调色板) <" alt="GD library in PHP5 generates graphic verification code (with Chinese characters)_PHP tutorial"> GD library in PHP5 generates graphic verification code (with Chinese characters)_PHP tutorial
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The GD library in PHP5 generates graphic verification codes (with Chinese characters). Use the GD library in PHP5 to generate a graphic verification code similar to the following 1. Use the GD library function to generate a picture and write the specified characters on the picture imagecreatetruecolor Create a new true color image image
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