How to display PHP code in textarea?

In a text area, I want to show the PHP code for a script, but I only see the HTML output, instead of the plain source code.

How can I get this plain PHP code to display?

 

For this purpose, I use a small Javascript component, that not only is very usefull, it also embeded the textarea into a nice IDE design with print and copy paste functionnalities.

You can see a sample and download it at http://code.google.com/p/syntaxhighlighter/

 

You can use html special characters in the text in the content.

for eg.

<form action="test.php" method="post">
<textarea rows="5" cols="25" >
&lt;?php

echo "Welcome to the world";

?&gt;
</textarea>
</form>

Try this one

 

I have been struggling with this for such a long time... if only I had known it was this easy

Thanks for the help!

 

<textarea rows="x" cols="y" >
<?php
highlight_file('/path/to/your_source_file.ext');
?>
</textarea>

Code (PHP):

OR

<textarea rows="x" cols="y" >
<?php
$var = "Your source PHP here. Attention to \" splash or others like \$ , etc.";
highlight_string($var);
?>
</textarea>

Code (PHP):

 

<textarea>
<?php
echo '<php 
//This is the PHP code I want to output
echo "All this code will appear in plain text because it is in single quotes";
';
</textarea>

HTML:

It is easy as you can see. You should also search for phtml files and this php functions to output a files source in syntax highlighted format.

http://us.php.net/manual/en/function.highlight-file.php

 

My website has a code snippets section and I use the following code to output the php codes in a textarea:

<textarea>
<?php
echo(htmlspecialchars('<?php echo 'foo'; ?>'));
?>
</textarea>

PHP: