Composer without XDebug

composer.sh

# Create file /usr/sbin/composer with following content:

#!/bin/bash
options=$(ls -1 /usr/lib/php5/20131226/| \

    grep --invert-match xdebug| \

    # remove problematic extensions
    egrep --invert-match 'mysql|wddx|pgsql|opcache'| \

    sed --expression 's/\(.*\)/ --define extension=\1/'| \

    # join everything together back in one big line
    tr --delete '\n'
)

php -n $options /opt/composer.phar $@

# -n                   - disable all extensions
# /opt/composer.phar   - path to composer
# $@                   - catch cli arguments