[BUGFIX] Fix the compare operator

Follow-up to #114

Author: Stefano Kowalke

.travis.yml

@@ -35,19 +35,19 @@ notifications:
 
 before_script:
   - >
-    if [[ "$TRAVIS_PHP_VERSION" == "5.3" || "$TRAVIS_PHP_VERSION" == "5.4" ]]; then
+    if [[ "$TRAVIS_PHP_VERSION" = "5.3" || "$TRAVIS_PHP_VERSION" = "5.4" ]]; then
         echo "extension = apc.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini;
         echo "apc.enable_cli=1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini;
         echo "apc.slam_defense=0" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini;
         pecl install igbinary > /dev/null;
     fi
   - >
-    if [[ "$TRAVIS_PHP_VERSION" == "5.5" || "$TRAVIS_PHP_VERSION" == "5.6"]]; then
+    if [[ "$TRAVIS_PHP_VERSION" = "5.5" || "$TRAVIS_PHP_VERSION" = "5.6"]]; then
       echo "extension = memcache.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini;
       echo "extension = redis.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini;
     fi
   - >
-    if [[ "$TRAVIS_PHP_VERSION" == "hhv*" ]]; then
+    if [[ "$TRAVIS_PHP_VERSION" = "hhv*" ]]; then
       echo "extension = memcache.so" >> /etc/hhvm/php.ini;
       echo "extension = redis.so" >> /etc/hhvm/php.ini;
     fi