WordPress PHP code in post content BUG

(@crosp)

[ Moderator note: moved to How-to and Troubleshooting. ]

Hi,

I have just found interesting bug

Try to create post with following content

1. Welcome to WordPress. This is your first post. Edit or delete it, then start writing!
2. Welcome to WordPress. This is your first post. Edit or delete it, then start writing!

3. Welcome to WordPress. This is your first post. Edit or delete it, then start writing!
4. Welcome to WordPress. This is your first post. Edit or delete it, then start writing!

<?php
//This callback registers our plug-in
echo "HELLO I AM BUG";
function wpse72394_register_tinymce_plugin($plugin_array) {
    $plugin_array['wpse72394_button'] = 'path/to/shortcode.js';
    return $plugin_array;
}

//This callback adds our button to the toolbar
function wpse72394_add_tinymce_button($buttons) {
            //Add the button ID to the $button array
    $buttons[] = "wpse72394_button";
    return $buttons;
}

5. Welcome to WordPress. This is your first post. Edit or delete it, then start writing!

6. Welcome to WordPress. This is your first post. Edit or delete it, then start writing!

Viewing 8 replies - 1 through 8 (of 8 total)

Moderator Steven Stern (sterndata)
(@sterndata)

Volunteer Forum Moderator

8 years, 5 months ago

You can’t just drop PHP into the editor and have it work in post.

Are you trying to *show* PHP code or execute it?

Thread Starter crosp
(@crosp)

8 years, 5 months ago

I don’t want it to work. I have good understanding of what is happening in browser, server side….
Please see my updated post, I’ve accidentally submitted the post, and I have no way to edit it.
Thread Starter crosp
(@crosp)

8 years, 5 months ago
I got following result

In this case php tag is unclosed, and everything after code disappears, so we won’t see neither 5 nor 6 sentence.

In case of wrapping this code inside code tag like that
```
<code><?php
//This callback registers our plug-in
echo "HELLO I AM BUG";
function wpse72394_register_tinymce_plugin($plugin_array) {
 $plugin_array['wpse72394_button'] = 'path/to/shortcode.js';
 return $plugin_array;
}

//This callback adds our button to the toolbar
function wpse72394_add_tinymce_button($buttons) {
 //Add the button ID to the $button array
 $buttons[] = "wpse72394_button";
 return $buttons;
}</code>
```
The result is following

And if I close php tag it will be displayed without this code here it is

You may say you have wrap the code into HTML/CSS tags.

I am currently on the stage of creating my own plugin for syntax highlighting, but here is an example of formatted code
```
<?php
//This callback registers our plug-in
function wpse72394_register_tinymce_plugin($plugin_array) {
 $plugin_array['wpse72394_button'] = 'path/to/shortcode.js';
 return $plugin_array;
} 
```
Please note <?php but STILL problem exists even if php tag is wrapped inside span tag in this case.

I thought that it would be problem with some plugins that use the_content filter, but I’ve just set up new installation of WordPress completely clean (all examples were tested with it).

Is this is problem with WordPress or maybe browser.

Please share your thoughts.

Thanks
Moderator Steven Stern (sterndata)
(@sterndata)

Volunteer Forum Moderator

8 years, 5 months ago

It is still unclear what you’re trying to accomplish. Are you tring to execute PHP code in-line in the content? If so, the best way to do that is to put your code into a shortcode then put the shortcode into the editor.

Thread Starter crosp
(@crosp)

8 years, 5 months ago

Thank you for you reply, I am not trying to execute php code, I just want to include in my post and in my case with the help of my plugin to highlight.
For example post explaining how to build wordpress plugin. I need to include some code snippets, consider my example and if I miss PHP end tag (?>) than I will get weird behavior as described earlier.
Thread Starter crosp
(@crosp)

8 years, 5 months ago
I am doing exactly as you’ve suggested. I using custom shortcode in text mode (because in visual mode TinyMCE will automatically add html markup to the code, but I don’t need this because my plugin will do this work)
```
[code-highlight line-numbers="table" linenostart="53" highlight-lines="1,3,8" style="native" lang="html+php" pyg-id="1" ]
<?php
//This callback registers our plug-in
function wpse72394_register_tinymce_plugin($plugin_array) {
 $plugin_array['wpse72394_button'] = 'path/to/shortcode.js';
 return $plugin_array;
}

//This callback adds our button to the toolbar
function wpse72394_add_tinymce_button($buttons) {
 //Add the button ID to the $button array
 $buttons[] = "wpse72394_button";
 return $buttons;
}
?>
[/code-highlight]
```
Here is an example of full my code, it is displayed correctly but in case of missing closing tag the behavior is the same. Next part of the post after the code snippet with unclosed tag is missed.
As I’ve already explained even if php tag inside span or any other tag without closing tag it doesn’t work.
Moderator Steven Stern (sterndata)
(@sterndata)

Volunteer Forum Moderator

8 years, 5 months ago

OK, got it. you want to show code in a post. So it seems that the issue is either with what’s passed to your shortcode or what your shortcode does with it. If you dump $content inside the shortcode, is it all there?
Thread Starter crosp
(@crosp)

8 years, 5 months ago
Thanks for answer. As far as I am creating my own plugin, I have done $content dump a lot of times.
Lets clarify all moments.
I am using Text Editor for post, not Visual, because Visual one adds some markup.
1. As I’ve described, to be sure that my plugin or any other plugin can cause this problem, I installed pure wordpress distro. But the problem still exists. Without any plugin. You can try by your own. If tag is not closed all content after code snippet starts to look weird.

2. Here are images that I posted earlier (but inserted incorrect link)

First :

Second:

Third:

3. My plugin just takes code between shortcodes, processes it, saves to db and than output formatted code.

Here is unformatted code :
```
 [code-highlight line-numbers="table" linenostart="53" highlight-lines="1,3,8" style="native" lang="html+php" pyg-id="1" ]
<?php
//This callback registers our plug-in
function wpse72394_register_tinymce_plugin($plugin_array) {
 $plugin_array['wpse72394_button'] = 'path/to/shortcode.js';
 return $plugin_array;
}

//This callback adds our button to the toolbar
function wpse72394_add_tinymce_button($buttons) {
 //Add the button ID to the $button array
 $buttons[] = "wpse72394_button";
 return $buttons;
}
?>[/code-highlight]
```
And now formatted code that goes directly to the output
```
<table class="highlighted-source native html-php table"><tr><td class="linenos"><div class="linenodiv"><pre>53
54
55
56
57
58
59
60
61
62
63
64
65
66</pre></div></td><td class="code"><div class="highlighted-source native html-php "><pre><?php
//This callback registers our plug-in
function wpse72394_register_tinymce_plugin($plugin_array) {
 $plugin_array['wpse72394_button'] = 'path/to/shortcode.js';
 return $plugin_array;
}

//This callback adds our button to the toolbar
function wpse72394_add_tinymce_button($buttons) {
 //Add the button ID to the $button array
 $buttons[] = &quot;wpse72394_button&quot;;
 return $buttons;
}
?>
</pre></div>
</td></tr></table>
```
This code works because of ?>
Again this problem is not in my plugin.

4. It doesn’t work even with following HTML `<?php
` content is just missing, only one line after code snippet is present, no html at all than.

Maybe I am going crazy but I have no idea what is wrong. I am not aware of each core part of WordPress maybe there is core filter that tries to fix unclosed tags ..

[Moderator note: Please, no bumping.]
- This reply was modified 8 years, 5 months ago by crosp.
- This reply was modified 8 years, 5 months ago by crosp.
- This reply was modified 8 years, 5 months ago by Steven Stern (sterndata).