commit 481233efadfac83d87d22a73a611681667923180
Author: Joshua Ramon Enslin <joshua@museum-digital.de>
Date:   Sun Jul 26 14:52:41 2020 +0200

    Initial

diff --git a/MD_STD.php b/MD_STD.php
new file mode 100644
index 0000000..9f0cdfd
--- /dev/null
+++ b/MD_STD.php
@@ -0,0 +1,54 @@
+<?PHP
+/**
+ * Provides type-safe overrides of default PHP functions.
+ */
+declare(strict_types = 1);
+
+/**
+ * Standard class providing overrides of default PHP functions as static
+ * functions.
+ */
+class MD_STD {
+
+    /**
+     * Wrapper around file_get_contents, that provides catches errors on it and returns
+     * with type safety.
+     *
+     * @param string $filename Filepath of the file to read.
+     *
+     * @return string
+     */
+    public static function file_get_contents(string $filename):string {
+
+        if (substr($filename, 0, 4) !== 'http' && !file_exists($filename)) {
+            throw new MDFileDoesNotExist("There is no file {$filename}");
+        }
+
+        $contents = file_get_contents($filename);
+
+        if (is_bool($contents)) {
+            throw new MDFileIsNotReadable("File {$filename} is not readable");
+        }
+
+        return $contents;
+
+    }
+
+    /**
+     * Gets contents of a folder.
+     *
+     * @param string $filepath Directory path.
+     *
+     * @return array<string>
+     */
+    public static function scandir(string $filepath):array {
+
+        if (!is_dir($filepath) || ($output = scandir($filepath)) === false) {
+            throw new MDFileDoesNotExist("There is no file {$filename}");
+        }
+
+        return array_values(array_diff($output, ['.', '..']));
+
+    }
+
+}