How to check if modules are enabled in php or not

To check if some particular modules such as PDO, XML, SQLLITE, FTP enabled in your PHP or not, we can use get_loaded_extensions() method.

<?php
echo "<pre>";
print_r(get_loaded_extensions());
?>

This will show you following modules are enabled

Array
(
    [0] => Core
    [1] => bcmath
    [2] => calendar
    [3] => ctype
    [4] => date
    [5] => filter
    [6] => hash
    [7] => iconv
    [8] => json
    [9] => mcrypt
    [10] => SPL
    [11] => pcre
    [12] => Reflection
    [13] => session
    [14] => standard
    [15] => mysqlnd
    [16] => tokenizer
    [17] => zip
    [18] => zlib
    [19] => libxml
    [20] => dom
    [21] => PDO
    [22] => bz2
    [23] => SimpleXML
    [24] => xml
    [25] => wddx
    [26] => xmlreader
    [27] => xmlwriter
    [28] => apache2handler
    [29] => openssl
    [30] => curl
    [31] => fileinfo
    [32] => gd
    [33] => gettext
    [34] => mbstring
    [35] => exif
    [36] => mysqli
    [37] => pdo_mysql
    [38] => pdo_sqlite
    [39] => Phar
    [40] => ftp
)