Initial commit

src/Cli/Cli.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace pointybeard\Helpers\Functions\Cli;
+
+/**
+ * Checks if bash can be invoked.
+ *
+ * Credit to Troels Knak-Nielsen for inspiring this code.
+ * (http://www.sitepoint.com/interactive-cli-password-prompt-in-php/)
+ *
+ * @return bool true if bash can be invoked
+ */
+if (!function_exists(__NAMESPACE__ . 'can_invoke_bash')) {
+    function can_invoke_bash()
+    {
+        return (strcmp(trim(shell_exec("/usr/bin/env bash -c 'echo OK'")), 'OK') === 0);
+    }
+}
+
+/**
+ * Checks if script is running as root user
+ *
+ * @return bool true if user is root
+ */
+if (!function_exists(__NAMESPACE__ . 'is_su')) {
+    function is_su()
+    {
+        $userinfo = posix_getpwuid(posix_geteuid());
+        return (bool)($userinfo['uid'] == 0 || $userinfo['name'] == 'root');
+    }
+}