This is a secure method to debug your apache from within php

For debugging without checking error_log/access_log files

  1. create a file called phpinfo.php in your / directory
  2. the contents of phpinfo.php 
    <?php
 
phpinfo();
 
?>
  3. Use this for your .htaccess file. 
    Options +FollowSymLinks
ErrorDocument 404 /phpinfo.php

    4. Now instead of getting a 404 error you will see debug information which will help you find out what the problem is.

    Add security to phpinfo.php

    Cd-MaN pointed out a security problem this method has, it reveals sensitive info to anyone who requests phpinfo.php.

    Also, you better use it only as a temporary measure, because it reveals many sensitive information about your server (eg. delete it after you done debugging)

    Here is a fix for this.

    Secure phpinfo.php with .htaccess

    This only allows the user from IP address 2.3.65.6, everyone else is redirected to http://www.domain.com

    ErrorDocument 403 http://www.domain.com
Order deny,allow
Deny from all
Allow from 2.3.65.6

    Secure phpinfo.php with php

    Same thing only uses .htaccess. Change your phpinfo.php file to the following

    <?php
        
        function debug() {
        ob_start();
        phpinfo();
        $debugger = ob_get_clean();
        if ($_SERVER['REMOTE_ADDR'] == '2.3.65.6')  echo $debugger;
?>

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