PHP Object-Oriented Programming example analysis, object-oriented programming _php tutorial

PHP Object-Oriented Programming example analysis, object-oriented programming

This paper analyzes the object-oriented programming method of PHP. Share to everyone for your reference, as follows:

In the development of ultra-large projects, if the use of process-oriented development, the amount of code is very large, which will be used in a lot of judgment and loop nesting, and many very similar code, not only make the project code volume is more large, not conducive to the development, reuse and maintenance.

Object-oriented can be a good solution to this problem, object-oriented very good encapsulation, save a lot of energy, do not care about the inner workings of objects, as long as the interaction between objects and objects, easy to maintain, and inheritance makes the code a lot of streamlining.

Let's look at a topic first:

Example: Zhang San is an ordinary person, others greet him in the morning, he will say "Good morning", but one day he was hit by a car, his brain was a little hurt, so when others greeted him in the morning, he sometimes said: "Morning", but sometimes said: "Nice evening", and even insult each other.

Analysis: Because now we're going to object-oriented, let's get the object out first.
Object 1: Zhang San (person) IQ (name is attribute) greeting (verb is method)
Object 2: The car hits people (Verbs are methods)

<?php//Create a human class, a class is an instance of an object (the mold in the factory) class human{  //Average person's IQ is public  $iq =;  Hello, morning see people Good morning public  function greet () {    echo ' Good Morning ';  }} Instantiate an object John Doe $lisi = new Human (); $lisi->greet ();//Return to Good morning?>

This is an instantiation of a normal John Doe

Look at the John Doe that got hit by a car.

<?php//Create a human class, a class is an instance of an object (the mold in the factory) class human{  //Average person's IQ is public  $iq =;  Hello, morning see people Good morning public  function greet () {    //When IQ is greater than or equal to    ($this->iq>=100) {      echo ' Good Morning ', '
';    } else{      //When IQ is less than 100, the following greeting appears randomly      $regard = array (' Good morning ', ' evening ', ' bastard ');      echo $regard [rand (0,2)], '
';    }  }} Instantiate an object John Doe $lisi = new Human (); $lisi->greet ();//Return to Good Morning class car{public  function hit ($people) {    // After the crash, People's IQ randomly changed    $people->iq=rand (40,120);}  } Instantiate a BMW car $baoma = new car ();//BMW hit the $baoma->hit ($lisi);//The IQ of the person after the crash $lisi->iq, '
';//people according to the IQ of how much, greetings are not the same $lisi->greet ();? >

More readers interested in object-oriented content in PHP can view the topic: "PHP Object-oriented Programming primer tutorial"

I hope this article is helpful to you in PHP programming.

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