Require extension and package versions to match

Closes #97

CHANGELOG.md

@@ -1,12 +1,15 @@
 CHANGELOG
 =========
 
-1.5.2
+1.6.0
 ------------------
 
 * 1.5.0 and 1.5.1 contained a possible memory corruptions when using
   `getWithPrefixLen`. This has been fixed. Reported by proton-ab.
   GitHub #96.
+* The `composer.json` file now conflicts with all versions of the
+  `maxminddb` C extension that do not match the Composer version.
+  Based on a pull request by Benoît Burnichon. GitHub #97.
 
 1.5.1 (2019-12-12)
 ------------------

composer.json

@@ -20,6 +20,9 @@
         "ext-gmp": "bcmath or gmp is required for decoding larger integers with the pure PHP decoder",
         "ext-maxminddb": "A C-based database decoder that provides significantly faster lookups"
     },
+    "conflict": {
+        "ext-maxminddb": "<1.5.1,>1.5.1"
+    },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "2.*",
         "phpunit/phpunit": "5.*",

dev-bin/release.sh

@@ -31,11 +31,19 @@ tag="v$version"
 rm -fr vendor
 
 perl -pi -e "s/(?<=#define PHP_MAXMINDDB_VERSION \")\d+\.\d+\.\d+(?=\")/$version/" ext/php_maxminddb.h
+perl -pi -e "s/(?<=\"ext-maxminddb\": \")<\d+.\d+.\d+,>\d+.\d+.\d+(?=\")/<$version,>$version/" composer.json
 
-php composer.phar self-update
-php composer.phar update
+pushd ext
+phpize
+./configure
+make
+popd
 
-./vendor/bin/phpunit
+php -n -dextension=ext/modules/maxminddb.so composer.phar self-update
+php -n -dextension=ext/modules/maxminddb.so composer.phar update
+
+php -n -dextension=ext/modules/maxminddb.so ./vendor/bin/phpunit
+php -n ./vendor/bin/phpunit
 
 echo $'\nDiff:'
 git diff