Add exams from exam58 to exam98

exam77/file.php

@@ -0,0 +1,45 @@
+<?php
+
+//Writing to a file 
+// $handle = fopen('names.txt', 'w');
+
+// fwrite($handle,'Alex' . "\n");
+// fwrite($handle, 'Nikola');
+
+// fclose($handle);
+
+//Appending a file
+
+
+if(isset($_POST['name'])){
+    $name = $_POST['name'];
+
+    if(!empty($name)){
+        $handle = fopen('names.txt', 'a');
+        fwrite($handle, $name ."\n");
+        fclose($handle);
+
+        echo 'Current names in file: ';
+
+        $count = 1;
+        $readin = file('names.txt');
+        $readin_count = count($readin);
+        foreach($readin as $fname){
+            echo trim($fname);
+            if($count < $readin_count){
+                echo ', ';
+            }
+            $count++;
+        }
+    } else {
+        echo 'Write some name!';
+    }
+}
+
+?>
+
+<form action="file.php" method="POST">
+    Name:<br>
+    <input type="text" name="name"><br><br>
+    <input type="submit" value="Submit">
+</form>