language.basic-syntax.comments.html
来自「php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容」· HTML 代码 · 共 72 行
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Comments</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="language.basic-syntax.html">Basic syntax</a></div> <div class="next" style="text-align: right; float: right;"><a href="language.types.html">Types</a></div> <div class="up"><a href="language.basic-syntax.html">Basic syntax</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="language.basic-syntax.comments" class="sect1"> <h2 class="title">Comments</h2> <p class="para"> PHP supports 'C', 'C++' and Unix shell-style (Perl style) comments. For example: <div class="informalexample"> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /> </span><span style="color: #007700">echo </span><span style="color: #DD0000">'This is a test'</span><span style="color: #007700">; </span><span style="color: #FF8000">// This is a one-line c++ style comment<br /> /* This is a multi line comment<br /> yet another line of comment */<br /> </span><span style="color: #007700">echo </span><span style="color: #DD0000">'This is yet another test'</span><span style="color: #007700">;<br /> echo </span><span style="color: #DD0000">'One Final Test'</span><span style="color: #007700">; </span><span style="color: #FF8000"># This is a one-line shell-style comment<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> <p class="simpara"> The "one-line" comment styles only comment to the end of the line or the current block of PHP code, whichever comes first. This means that HTML code after <i>// ... ?></i> or <i># ... ?></i> WILL be printed: ?> breaks out of PHP mode and returns to HTML mode, and <i>//</i> or <i>#</i> cannot influence that. If the <a href="ini.core.html#ini.asp-tags" class="link">asp_tags</a> configuration directive is enabled, it behaves the same with <i>// %></i> and <i># %></i>. However, the <i></script></i> tag doesn't break out of PHP mode in a one-line comment. </p> <p class="para"> <div class="informalexample"> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><h1>This is an <span style="color: #0000BB"><?php </span><span style="color: #FF8000"># echo 'simple';</span><span style="color: #0000BB">?></span> example.</h1><br /><p>The header above will say 'This is an example'.</p></span></code></div> </div> </div> </p> <p class="simpara"> 'C' style comments end at the first <i>*/</i> encountered. Make sure you don't nest 'C' style comments. It is easy to make this mistake if you are trying to comment out a large block of code. </p> <p class="para"> <div class="informalexample"> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /> </span><span style="color: #FF8000">/* <br /> echo 'This is a test'; /* This comment will cause a problem */<br /> </span><span style="color: #007700">*/<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="language.basic-syntax.html">Basic syntax</a></div> <div class="next" style="text-align: right; float: right;"><a href="language.types.html">Types</a></div> <div class="up"><a href="language.basic-syntax.html">Basic syntax</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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