Abstract class: checking the class of an object
*************************
class A{
...
}
class B{
...
public function import(A $a){
$this->value2=($a->getValue());
}
}
$a = new A();
$b = new B();
if($a instanceof B){
echo "There is a big problem
";
}
if($a instanceof A){
echo "Normal
";
}
// is OK
$b->import($a);
echo "Value of \$b imported from \$a
";
// is KO
$b->import($b);
echo "Value of \$b imported from \$b
";
*************************
value;
}
public function setValue($v){
$this->value = $v;
}
}
class B{
private $value2;
public function getValue2(){
return $this->value2;
}
public function setValue2($v){
$this->value2 = $v;
}
public function import(A $a){
$this->value2=($a->getValue());
}
}
$a = new A();
$b = new B();
if($a instanceof B){
echo "There is a big problem
";
}
if($a instanceof A){
echo "Normal
";
}
// is OK
$b->import($a);
echo "Value of \$b imported from \$a
";
// is KO
$b->import($b);
echo "Value of \$b imported from \$b
";
?>