php语法参考-基本语法指令分隔符和注释
指令分割方式与C或者perl类似---每个语句有分号隔开。结束标记(?>)同样隐含语句的结束，因此下面的代码是等价的<?phpecho "This is a text";?><?php echo "This is a test"?>注释：php支持'c',c++和unix shell风格的注释；例如：<?phpecho "This is a test";//This is a one-line c++ style comment/*This is a multi line commentyet another line of comment*/echo "This is yet another test";echo "One Final Test";#This is shell-style style comment?>"单行"注释仅仅注释到行末或者当前的代码块，视乎哪个首先出现。<h1>This is an <?php # echo "simple"?>example.</h1><p>The header above will say 'This is an example'.小心不要嵌套'C'风格的注释，当注释大量的代码时，可能犯该错误。<?php/*echo "This is a test";/*This comment will cause a problem*/*/?>单行注释仅仅注释到行末或者当前的php代码块
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