常量替换 · AAPHP开发手册

### 模板替换在进行模板输出之前，系统还会对渲染的模板结果进行一些模板的特殊字符串替换操作，也就是实现了模板输出的替换和过滤。 ~~~ __ROOT__ 会被替换成当前网站的网站根目录 http://localhost/ ~~~ ### 实例 ~~~ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>fetch</title> </head> <body>  <include file="./application/example/view/Include/header.html"/> I am __ROOT__/application/example/view/ViewExample/includeExample.html  <include file="./application/example/view/Include/footer.html"/> </body> </html> ~~~ 解析后的编译文件 ~~~ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>fetch</title> </head> <body>  <h2>I am header.html</h2> I am <?php echo __ROOT__; ?>/application/example/view/ViewExample/includeExample.html  <h2>I am footer.html</h2> </body> </html> ~~~ 最终输出 ~~~ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>fetch</title> </head> <body>  <h2>I am header.html</h2> I am http://localhost/aaphp_blog/application/example/view/ViewExample/includeExample.html  <h2>I am footer.html</h2> </body> </html> ~~~