I cant recommend an exact wordpress plugin to accomplish this but what you are probably looking for is an html editor that allows the use of the <pre> tag

anything inside a pre tag is displayed in its exact format

WordPress › WP-Syntax « WordPress Plugins

Like that?

Hello,

If you need to write code in your post you can put that under <code></code> tags, for example: <code><?php echo ('Hello World!'); ?></code>. Don't go for any plugin as it would put unnecessary load on the system only.

Thank you

Hi Friend,

Yes there are specific tags available in editor itself also or you can use <code></code> tag to display the code in WP Posts.

if you want to execute the php script in the post content, you can try the plugin "PHP Execution" => wordpress.org/extend/plugins/php-execution-plugin

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you should try WP-CodeBox. you will find it helpful

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If you want to write html code in your post you can put that under <code></code> tags, for example: <code><?php echo ('Hello World!'); ?></code>.

Better to use one of the plugins mentioned above then use the pre or code tag - for some reason, that doesn't always convert to plain text, especially if you're trying to include an img tag or something.

You can go to wordpress official website and looking the plugin that you mean. There are thousands of plugins for you to try.

Plugin is not always the best.

I second WP-Syntax, works for all kinds of code (languages)

Use Wordpress Code Snippet. It does a great job of displaying your code and even does syntax highlights.