Archive: Namaste PHP AMQP framework v1.0 (2017-2020)

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stubs/testReferences.php

@@ -0,0 +1,69 @@
+<?php
+/*
+ * this stub tests the ability to reference different class objects, via a generic class member, and still have the
+ * IDE access the member functions and variables of the assigned class without generating warnings or errors.
+ *
+ * 01-07-20     mks     original coding
+ */
+
+class bar
+{
+    public int $y;
+
+    public function __construct()
+    {
+        $this->y = 0;
+    }
+
+    public function changeY(int $newValue): bool
+    {
+        if ($newValue == $this->y) return false;
+        $this->y = $newValue;
+        return true;
+    }
+}
+
+class foo
+{
+    public int $x;
+    public object $copy;
+
+    public function __construct()
+    {
+        $this->x = 1;
+        $this->copy = new stdClass();
+    }
+
+    public function changeX(int $newValue = 1): bool
+    {
+        if ($newValue == $this->x) return false;
+        $this->x = $newValue;
+        return true;
+    }
+}
+
+$original = new foo();
+
+echo 'Value of original->x: ' . $original->x . PHP_EOL;
+echo 'Value of original->x was ' . ($original->changeX(10)) ? '' : 'not ';
+echo 'changed.' . PHP_EOL;
+
+// assign the reference
+$original->copy =& $original;
+
+echo 'Value of copy->x ' . $original->copy->changeX(10) ? '' : 'not ';
+echo 'changed.' . PHP_EOL;
+
+echo 'value of original->copy->x: ' . $original->copy->x . PHP_EOL;
+
+// reassign the object $original->copy to the class object $argle
+$objectTwo = new bar();
+$original->copy =& $objectTwo;
+// note that even though $original->copy is decl as type object, we can still assign another object, of type argle
+// to the member AND access that member's functions without generating a warning!
+if ($original->copy->changeY(10))
+    echo 'original->copy value changed!' . PHP_EOL;
+else
+    echo 'original->copy unchanged' . PHP_EOL;
+
+echo 'value of original->copy->y: ' . $original->copy->y . PHP_EOL;