♻️ Rework various common classes

phpmon-common/PHP/PhpInstallation.swift

@@ -0,0 +1,30 @@
+//
+//  PhpInstallation.swift
+//  PHP Monitor
+//
+//  Created by Nico Verbruggen on 28/11/2021.
+//  Copyright © 2021 Nico Verbruggen. All rights reserved.
+//
+
+import Foundation
+
+class PhpInstallation {
+    
+    var longVersion: String
+    
+    /**
+     In order to determine details about a PHP installation, we’ll simply run `php-config --version`
+     in the relevant directory.
+     */
+    init(_ version: String) {
+        let phpConfigExecutablePath = "\(Paths.optPath)/php@\(version)/bin/php-config"
+        self.longVersion = version
+        if Shell.fileExists(phpConfigExecutablePath) {
+            self.longVersion = Command.execute(
+                path: phpConfigExecutablePath,
+                arguments: ["--version"]
+            )
+        }
+    }
+    
+}