note 85151 added to language.oop5

Sorry to change the subject, but OOP is way cooler if you "define" and "use" several objects in combination with each other. <?php class Point{ // an object that represents a location in 2-dimensional space. public $x; // x position of this point public $y; // y position of this point public function __construct($xPos = 0, $yPos = 0){ $this->x = $xPos; $this->y = $yPos; } public function __toString(){ // get a string representation of this point return 'Point(' . $this->x . ', ' . $this->y .')'; } } class Line{ // an object that represents a line in 2-dimensional space public $start; // start point of this line public $end; // end point of this line public function __construct($xPos1 = 0, $yPos1 = 0, $xPos2 = 0, $yPos2 = 0){ $this->start = new Point($xPos1, $yPos1); // create a Point object $this->end = new Point($xPos2, $yPos2); // create a Point object } public function getLength(){ // get the length of this line return sqrt( pow(($this->start->x - $this->end->x), 2) + pow(($this->start->y - $this->end->y), 2) ); } public function __toString(){ // get a string representation of this line return 'Line[start=' . $this->start . ', end=' . $this->end . ', length=' . $this->getLength() . ']'; } } // create a few objects of TYPE Line. $line1 = new Line(25, 25, 40, 40); $line2 = new Line(10, 10, 30, -10); $line3 = new Line(-50, 65, 50, 65); // output to the display echo '<p>$line1 = ' . $line1 . '</p> <p>$line2 = ' . $line2 . '</p> <p>$line3 = ' . $line3 . '</p>'; ?> -- Begin output -- $line1 = Line[start=Point(25, 25), end=Point(40, 40), length=21.2132034356] $line2 = Line[start=Point(10, 10), end=Point(30, 0), length=22.360679775] $line3 = Line[start=Point(-50, 65), end=Point(50, 65), length=100] -- End output -- Each of the objects created above ($line1, $line2, $line3) are of TYPE Line, and each one can perform their own special tasks which includes; creating the start and end points, and calculating its length. The start and end points are created in the constructor when the Line is created, and the length is calculated in the __toString method when the Line is called to be displayed, although, you can call the getLength() method at any time. Having individual objects work on themselves this way is one of the really cool things about OOP, and allows you to create more complicated software. ---- Server IP: 69.147.83.197 Probable Submitter: 67.150.123.227 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.php Edit -- https://master.php.net/note/edit/85151 Del: integrated -- https://master.php.net/note/delete/85151/integrated Del: useless -- https://master.php.net/note/delete/85151/useless Del: bad code -- https://master.php.net/note/delete/85151/bad+code Del: spam -- https://master.php.net/note/delete/85151/spam Del: non-english -- https://master.php.net/note/delete/85151/non-english Del: in docs -- https://master.php.net/note/delete/85151/in+docs Del: other reasons-- https://master.php.net/note/delete/85151 Reject -- https://master.php.net/note/reject/85151 Search -- https://master.php.net/manage/user-notes.php