add memcache support

config/ext.json

@@ -163,6 +163,17 @@
             "onig"
         ]
     },
+    "memcache": {
+        "type": "external",
+        "source": "ext-memcache",
+        "arg-type": "custom",
+        "lib-depends": [
+            "zlib"
+        ],
+        "ext-depends": [
+            "session"
+        ]
+    },
     "mongodb": {
         "type": "external",
         "source": "mongodb",
@@ -220,13 +231,6 @@
             "postgresql"
         ]
     },
-    "pgsql": {
-        "type": "builtin",
-        "arg-type": "with-prefix",
-        "lib-depends": [
-            "postgresql"
-        ]
-    },
     "pdo_sqlite": {
         "type": "builtin",
         "arg-type": "with",
@@ -238,6 +242,13 @@
             "sqlite"
         ]
     },
+    "pgsql": {
+        "type": "builtin",
+        "arg-type": "with-prefix",
+        "lib-depends": [
+            "postgresql"
+        ]
+    },
     "phar": {
         "type": "builtin",
         "ext-depends": [

config/source.json

@@ -61,6 +61,16 @@
             "path": "LICENSE"
         }
     },
+    "ext-memcache": {
+        "type": "url",
+        "url": "https://pecl.php.net/get/memcache",
+        "path": "php-src/ext/memcache",
+        "filename": "memcache.tgz",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
     "ext-ssh2": {
         "type": "url",
         "url": "https://pecl.php.net/get/ssh2",