diff --git a/src/string_search.php b/src/string_search.php
new file mode 100644
index 0000000..b7e3007
--- /dev/null
+++ b/src/string_search.php
@@ -0,0 +1,19 @@
+<?php
+
+function string_search($needle, $haystack) {
+  
+  // check for empty needle string
+  if ($needle === '') {
+    return false;
+  }
+  
+  $result = strpos($haystack, $needle);
+  
+  if ($result === false) {
+    return $result;    
+  } else {
+    return "Found '$needle' at index $result";
+  }
+}
+
+?>
\ No newline at end of file