PHP does not display error messages

To turn on errors at the script level, include at the top of your script:

ini_set('display_errors', 1);
error_reporting(~0);

Alternatively, if it is not a production site and simply a development / testing site, you can turn on error reporting in php.ini. Search it for these settings:

error_reporting  =  E_ALL
;error_reporting  =  E_ERROR
display_errors = On
;display_errors = Off

May be the display error is off

add in .htaccess file of your application.

php_value display_errors on

OR

use this at the top of your php script

ini_set('display_errors',"1");

To show error message on page over browser for php script use following code in top of your php file.

<?php 
ini_set('display_errors', 1);
error_reporting(~0);
?>

and there is another way to check php error code if you are linux ubuntu user execute following command on terminal.

NOTE : -10 is the number of message you want to show.