TASK: Add phan configuration

Even if not used in CI yet, we still can use it local.

.phan/config.php

@@ -0,0 +1,96 @@
+<?php
+
+/**
+ * This configuration will be read and overlaid on top of the
+ * default configuration. Command line arguments will be applied
+ * after this file is read.
+ */
+return [
+
+    // Supported values: '7.0', '7.1', '7.2', null.
+    // If this is set to null,
+    // then Phan assumes the PHP version which is closest to the minor version
+    // of the php executable used to execute phan.
+    "target_php_version" => '7.0',
+
+    // Override to hardcode existence and types of (non-builtin) globals.
+    // Class names should be prefixed with '\\'.
+    // (E.g. ['_FOO' => '\\FooClass', 'page' => '\\PageClass', 'userId' => 'int'])
+    'globals_type_map' => [
+        '_EXTKEY' => 'string',
+        'EM_CONF' => 'array',
+    ],
+
+    // A list of directories that should be parsed for class and
+    // method information. After excluding the directories
+    // defined in exclude_analysis_directory_list, the remaining
+    // files will be statically analyzed for errors.
+    //
+    // Thus, both first-party and third-party code being used by
+    // your application should be included in this list.
+    'directory_list' => [
+        'Classes',
+        '.Build/vendor',
+    ],
+
+    // A list of files to include in analysis
+    'file_list' => [
+        'ext_emconf.php',
+        'ext_tables.php',
+        'ext_localconf.php',
+    ],
+
+    // A directory list that defines files that will be excluded
+    // from static analysis, but whose class and method
+    // information should be included.
+    //
+    // Generally, you'll want to include the directories for
+    // third-party code (such as "vendor/") in this list.
+    //
+    // n.b.: If you'd like to parse but not analyze 3rd
+    //       party code, directories containing that code
+    //       should be added to the `directory_list` as
+    //       to `exclude_analysis_directory_list`.
+    "exclude_analysis_directory_list" => [
+        '.Build/vendor'
+    ],
+
+    // A list of directories that should be parsed for class and
+    // method information. After excluding the directories
+    // defined in exclude_analysis_directory_list, the remaining
+    // files will be statically analyzed for errors.
+    //
+    // Thus, both first-party and third-party code being used by
+    // your application should be included in this list.
+    'directory_list' => [
+        'Classes',
+        // 'Tests',
+        '.Build/vendor',
+    ],
+
+    // The number of processes to fork off during the analysis phase.
+    'processes' => 3,
+
+    // Add any issue types (such as 'PhanUndeclaredMethod')
+    // here to inhibit them from being reported
+    'suppress_issue_types' => [
+        'PhanDeprecatedFunction', // For now
+        'PhanParamTooMany', // For now, due to ObjectManager->get()
+    ],
+
+    // A list of plugin files to execute.
+    // See https://github.com/phan/phan/tree/master/.phan/plugins for even more.
+    // (Pass these in as relative paths.
+    // The 0.10.2 release will allow passing 'AlwaysReturnPlugin' if referring to a plugin that is bundled with Phan)
+    'plugins' => [
+        // checks if a function, closure or method unconditionally returns.
+        'AlwaysReturnPlugin',  // can also be written as 'vendor/phan/phan/.phan/plugins/AlwaysReturnPlugin.php'
+        // Checks for syntactically unreachable statements in
+        // the global scope or function bodies.
+        'UnreachableCodePlugin',
+        'DollarDollarPlugin',
+        'DuplicateArrayKeyPlugin',
+        'PregRegexCheckerPlugin',
+        'PrintfCheckerPlugin',
+    ],
+];