From f44fd251e10706de3a72fa49739e415fe66edecf Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Wed, 5 Aug 2020 09:06:28 +0200
Subject: [PATCH] Add functions startsWithAny, startsWith

---
 MD_STD.php | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/MD_STD.php b/MD_STD.php
index 95be7ef..eeeba8a 100644
--- a/MD_STD.php
+++ b/MD_STD.php
@@ -51,4 +51,38 @@ class MD_STD {
 
     }
 
+    /**
+     * Function checking if a string starts with another.
+     *
+     * @param string $haystack String to check.
+     * @param string $needle   Potential start of $haystack.
+     *
+     * @return boolean
+     */
+    public static function startsWith(string $haystack, string $needle):bool {
+
+        if (substr($haystack, 0, strlen($needle)) == $needle) return true;
+        else return false;
+
+    }
+
+    /**
+     * Function checking if a string starts with any input from the input array.
+     *
+     * @param string   $haystack String to check.
+     * @param string[] $needles  Array containing potential start values of $haystack.
+     *
+     * @return boolean
+     */
+    public static function startsWithAny(string $haystack, array $needles):bool {
+
+        $output = false;
+        foreach ($needles as $needle) {
+            $output = self::startsWith($haystack, $needle);
+            if ($output == true) return $output;
+        }
+        return $output;
+
+    }
+
 }