Don't work composer in PHP 7.0
I insert this command to the terminal:
$sudo composer require cocur/slugify
In the directory is created only one empty file composer.json
My OS: Ubuntu 14.04
My PHP:
PHP 7.0.1-5+deb.sury.org~trusty+1 (cli) ( NTS )
Copyright (c) 1997-2015 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2015 Zend Technologies
with Xdebug v2.4.0RC2, Copyright (c) 2002-2015, by Derick Rethans
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies
Sorry, the application php7.0 has stopped unexpectedly
php7.0 crashed with sigsegv in xdebug_var_export