033-Managing strings with isset and unset in PHP

Author: antonio-phpfullstack

033-string-isset-unset.php

@@ -0,0 +1,19 @@
+<?php
+
+function showName(? string $name = null):void {
+    if (isset($name)) {
+        echo "The name {$name} is set}\n";
+    } else {
+        echo "The name is not set\n";
+    }
+}
+
+$name = "Joseph Climber";
+showName($name);
+
+unset($name);
+showName($name); //PHP Warning Message
+
+
+
+