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@ 2018-07-24T17:16:38Z

<?php

abstract class person {
    
    abstract protected function write_info();
    
    public $LastName;
    public $FirstName;
    public $BirthDate;
    
    public function get_Age($today=NULL){
       
    }
}

final class employee extends person{
    public $EmployeeNumber;
    public $DateHired;

    public function write_info(){
        echo "Writing ". $this->LastName . "'s info to emloyee dbase table";    
        
    }
}

final class student extends person{
    public $StudentNumber;
    public $CourseName;
    
    public function write_info(){
        echo "Writing ". $this->LastName . "'s info to student dbase table";
        
    }
}

$personA = new employee;
$personB = new student;

$personA->FirstName="Joe";
$personA->LastName="Sbody";

$personB->FirstName="Ben";
$personB->LastName="Dover";

$personA->write_info();
?>

OUTPUT:Writing Sbody's info to emloyee dbase table

Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Writing Sbody's info to emloyee dbase table OUTPUT:Writing Sbody's info to emloyee dbase table
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Writing Sbody's info to emloyee dbase table OUTPUT:Writing Sbody's info to emloyee dbase table

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190.28 ms | 402 KiB | 287 Q