How to delete commented out parts with Simple HTML DOM Parser
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Hello!
This is Hase from the Web Systems Department.
This time, we will use "Simple HTML DOM Parser" which can parse HTML in PHP to extract
the HTML comment part ( Here's how to remove it.
The reason is that I was using Simple HTML DOM Parser to
optimize HTML for a certain project, and
while I was doing some research on how to use it, I
didn't see many people mentioning it in the comments (perhaps because I don't use it much?), so I
thought I'd leave it here as a memo.
Introducing the Simple HTML DOM Parser
Download the library
manual
PHP Simple HTML DOM Parser Manual
Target HTML file
comment_out.html
<!DOCTYPE html><html lang="ja"><head><meta charset="utf-8"><title>Beyond Co., Ltd.</title></head><body><!-- 会社名 --><h1> Beyond Co., Ltd.</h1><!-- ビヨンドの企業理念 --><h2> "Continuing to create and support together"</h2><h3> Our job at Beyond is to support people who create new value through IT.</h3><p> It may not be a glamorous job, but we believe it is essential for users to live more comfortable and enjoyable lives.Our mission is to build long-term relationships that allow for mutual growth by providing not only system services but also "connections" and "information" that will expand business opportunities for creators. </p><!-- 上記の「会社名」「ビヨンドの企業理念」のように一行のコメントはもちろん このように複数行に渡って 記述されているコメントも 削除することが可能です --></body></html>
Creating Executable PHP
Loading a Library
require_once 'simple_html_dom.php';
Load the target HTML
$html = file_get_html('comment_out.html');
Extract and remove the comment part
foreach ($html->find("comment") as $comment) { $comment->outertext = ""; }
You can extract the comment part as an array using
$html->find("comment") and you can empty the element (remove it) using $comment->outertext = "";
Save
$body = $html->save(); $html->clear();
Write to a file
file_put_contents("comment_out_delete.html", $body);
The completed PHP file
<?php // ライブラリを読み込む require_once 'simple_html_dom.php'; // 対象HTMLを読み込む $html = file_get_html('comment_out.html'); // コメント部分を抽出して除去 foreach ($html-> find("comment") as $comment) { $comment->outertext = ""; } // Save $body = $html->save(); $html->clear(); // Write to file file_put_contents("comment_out_delete.html", $body); ?>
HTML file after PHP execution
comment_out_delete.html
<!DOCTYPE html><html lang="ja"><head><meta charset="utf-8"><title>Beyond Co., Ltd.</title></head><body><h1> Beyond Co., Ltd.</h1><h2> "Continuing to create and support together"</h2><h3> Our job at Beyond is to support people who create new value through IT.</h3><p> It may not be a glamorous job, but we believe it is essential for users to live more comfortable and enjoyable lives.Our mission is to build long-term relationships that allow for mutual growth by providing not only system services but also "connections" and "information" that will expand business opportunities for creators.</p></body></html>
The comment was successfully removed
lastly
I have opened the system development service site "SEKARAKU Lab" to which I belong.
Beyond is a one-stop service for everything from server design and construction to operation, so if you have any trouble with server-side development, please feel free to contact us.
SEKARAKU Lab: [https://sekarakulab.beyondjapan.com/](https://sekarakulab.beyondjapan.com/)
That's all.
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