php: fully version pear repo

A shared version is still possible with user configuration, but we
should follow the versioned policies to avoid link problems between
versions.

Formula/php.rb

@@ -1,8 +1,9 @@
 class Php < Formula
   desc "General-purpose scripting language"
-  homepage "https://php.net/"
+  homepage "https://secure.php.net/"
   url "https://php.net/get/php-7.2.4.tar.xz/from/this/mirror"
   sha256 "7916b1bd148ddfd46d7f8f9a517d4b09cd8a8ad9248734e7c8dd91ef17057a88"
+  revision 1
 
   bottle do
     sha256 "465136132568d7b316e8cec31569aa67af7ce8b6d4e472a55d78c0fbdf22401b" => :high_sierra
@@ -71,6 +72,9 @@ class Php < Formula
     ENV.append "CPPFLAGS", "-DU_USING_ICU_NAMESPACE=1"
 
     config_path = etc/"php/#{php_version}"
+    # Prevent system pear config from inhibiting pear install
+    (config_path/"pear.conf").delete if (config_path/"pear.conf").exist?
+
     # Prevent homebrew from harcoding path to sed shim in phpize script
     ENV["lt_cv_path_SED"] = "sed"
 
@@ -80,6 +84,7 @@ class Php < Formula
       --sysconfdir=#{config_path}
       --with-config-file-path=#{config_path}
       --with-config-file-scan-dir=#{config_path}/conf.d
+      --with-pear=#{pkgshare}/pear
       --enable-bcmath
       --enable-calendar
       --enable-dba
@@ -193,7 +198,7 @@ class Php < Formula
   end
 
   def post_install
-    pear_prefix = share/"pear"
+    pear_prefix = pkgshare/"pear"
     pear_files = %W[
       #{pear_prefix}/.depdblock
       #{pear_prefix}/.filemap
@@ -220,6 +225,7 @@ class Php < Formula
 
     # fix pear config to install outside cellar
     pear_path = HOMEBREW_PREFIX/"share/pear"
+    cp_r pkgshare/"pear/.", pear_path
     {
       "php_ini" => etc/"php/#{php_version}/php.ini",
       "php_dir" => pear_path,
@@ -237,6 +243,8 @@ class Php < Formula
       system bin/"pear", "config-set", key, value, "system"
     end
 
+    system bin/"pear", "update-channels"
+
     %w[
       opcache
     ].each do |e|