Add exam54 files to Git

exam54/FindAndReplace.php

@@ -0,0 +1,33 @@
+
+<?php
+
+$offset = 0;
+
+if(isset($_POST['text']) && isset($_POST['searchfor']) && isset($_POST['replacewith'])){
+    $text = $_POST['text'];
+    $search = $_POST['searchfor'];
+    $replace = $_POST['replacewith'];
+
+    $search_length = strlen($search);
+
+    if(!empty($text) && !empty($search) && !empty($replace)){
+
+        $text = str_ireplace($search, $replace, $text);
+		echo $text;
+    }else{
+        echo 'Please fill in all fields.';
+    }
+
+}
+
+?>
+
+<form action="FindAndReplace.php" method="POST">
+    <textarea name="text" cols="30" rows="7"></textarea><br><br>
+
+    Search for: <br>
+    <input type="text" name = "searchfor" ><br><br>
+    Replace with: <br>
+    <input type="text" name = "replacewith" ><br><br>
+    <input type = "submit" value = "Find and replace">
+</form>