diff --git a/src/string_search.php b/src/string_search.php
new file mode 100644
index 0000000..644215a
--- /dev/null
+++ b/src/string_search.php
@@ -0,0 +1,17 @@
+<?php
+	//$haystack = "intermittent";
+	//$needle = "matt";
+	//$needle = "mitt";
+	//$needle = "";
+	
+	if($needle !== "") {
+	$pos = strpos(strtolower($haystack),strtolower($needle));
+	if($pos === false) {
+			echo "'$needle' not found."; 
+		} else {
+			echo "Found '$needle' at position $pos.";
+		}
+	} else {
+		echo "No substring data exists.";
+	}
+?>
\ No newline at end of file