The PHP Professional

Author: navjotsinghprince

PHP A to Z OOPS/1 Class and Object.php renamed to PHP A to Z OOPS/1.Class and Object.php

@@ -0,0 +1,40 @@
+<?php
+//If we attempt to access any private property or a non-existing property, this method is automatically invoked.
+
+
+#First Example----------------------
+/*
+class abc{
+ private $name="Navjot Singh";
+
+ public function __get($PropertyName){
+ echo "You Are Trying To access Non-Existing Or Private Property($PropertyName)";
+ }
+
+}
+$test= new abc();
+$test->name;
+*/
+
+
+class abc
+{
+private $data = ["name" => "Prince", "course" => "PHP", "fee" => 10000];
+
+public function __get($key)
+{
+#echo "You Are Trying To access Non-Existing Or Private Property($PropertyName)";
+if (array_key_exists($key, $this->data)) {
+return $this->data[$key];
+} else {
+return "This Key($key) is not Defined";
+}
+}
+}
+
+$test = new abc();
+//print_r($test->data);
+
+echo $test->name;
+echo $test->course;
+echo $test->age;

PHP A to Z OOPS/2 Constructor.php renamed to PHP A to Z OOPS/2.Constructor.php

@@ -0,0 +1,26 @@
+<?php
+//This function is called when we set the value of a private property from outside.
+
+class abc
+{
+private $name;
+
+public function __get($PropertyName)
+{
+echo "You Are Trying To access Non-Existing Or Private Property($PropertyName)";
+}
+
+public function __set($propertyname, $value)
+{
+#echo "This is Non-Existing and private property($property)";
+if (property_exists($this, $propertyname)) {
+$this->$propertyname = $value;
+} else {
+echo "Property Does Not Exist($propertyname)";
+}
+}
+}
+
+$test = new abc();
+
+echo $test->name = "Navjot Singh";

PHP A to Z OOPS/22.Get Magic Method.php

@@ -0,0 +1,39 @@
+<?php
+//This method is called when we attempt to access a private method from outside.
+
+class student
+{
+private $first_name;
+private $last_name;
+
+private function setName($fname, $lname)
+{
+$this->first_name = $fname;
+$this->last_name = $lname;
+}
+
+public function show()
+{
+echo $this->first_name;
+echo $this->last_name;
+}
+//The method named $methodname will be called, 
+//and the arguments that we passed to it will be available in the function as parameters.
+public function __call($methodname, $args)
+{
+#echo "This is Private Or Non-Existing method($methodname)";
+#print_r($args);
+if (method_exists($this, $methodname)) {
+call_user_func_array([$this, $methodname], $args);
+} else {
+echo "Method Does not Exist($methodname)";
+}
+}
+}
+
+$test = new student();
+
+$test->setName("Navjot", "Singh");
+print_r($test);
+
+$test->show();