How to show uploaded php file as plain text instead of executing it in wordpress

Edit a testme.php file in /tmp.

<?php
echo “test”;
?>
Edit a new post titled test and upload file /tmp/testme.php ,pubish it with url https://home.local/wp/?p=4785 (home.local point to 127.0.0.1)

I want to see the content in testme,type https://home.local/wp/?p=4785.
test post in my wordpress
To click testme url in test post.
click
Go on to click testme, i got the executing result of testme.php in webpage.

test

My requirements :
1.just click testme in test post for one time.
2.show the testme.php as plain text ,

   <?php
    echo  "test";
    ?>

instead of the result of executing testme.php.

I make a configuration according some material show php file as plain text in apache.

sudo vim /etc/apache2/sites-available/000-default.conf

<VirtualHost *:80>
    ServerName www.home.local
    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/html
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
        <Directory /var/www/html>
            Options Indexes FollowSymLinks MultiViews
            AllowOverride All
            allow from all
            php_flag engine off
            AddType text/plain php
        </Directory>
</VirtualHost>

Reboot apache2(build in debian).
sudo systemctl restart apache2

To open the post https://home.local/wp/?p=4785,i got the following output in webpage:

<?php
/**
 * Front to the WordPress application. This file doesn't do anything, but loads
 * wp-blog-header.php which does and tells WordPress to load the theme.
 *
 * @package WordPress
 */

/**
 * Tells WordPress to load the WordPress theme and output it.
 *
 * @var bool
 */
define('WP_USE_THEMES', true);

/** Loads the WordPress Environment and Template */
require( dirname( __FILE__ ) . '/wp-blog-header.php' );

• This topic was modified 6 years, 2 months ago by elearn2014.
• This topic was modified 6 years, 2 months ago by elearn2014.
• This topic was modified 6 years, 2 months ago by elearn2014.
• This topic was modified 6 years, 2 months ago by elearn2014.