Error: Call to undefined function create_function()

#0 /home/xs856062/omg-corp.jp/public_html/mt/php/lib/MTViewer.php(157): MTViewer->register_tag_handler('mtelse', Array, 'block')
#1 /home/xs856062/omg-corp.jp/public_html/mt/php/mt.php(916): MTViewer->__construct(Object(MT))
#2 /home/xs856062/omg-corp.jp/public_html/mt/php/mt.php(168): MT->context()
#3 /home/xs856062/omg-corp.jp/public_html/mt/php/mt.php(130): MT->init_addons()
#4 /home/xs856062/omg-corp.jp/public_html/mt/php/mt.php(79): MT->init(1, '/home/xs856062/...')
#5 /home/xs856062/omg-corp.jp/public_html/mt/php/mt.php(94): MT->__construct(1, '/home/xs856062/...')
#6 /home/xs856062/omg-corp.jp/public_html/mtview.php(4): MT::get_instance(1, '/home/xs856062/...')
#7 {main}