Showing posts with label php programming. Show all posts
Showing posts with label php programming. Show all posts
Polymorphism in OOP
Polymorphism in OOP:
In this tutorial we will study about polymorphism.
- Polymorphism in PHP5 : To allow a class member to perform diffrent tasks.
- polymorphism where the function to be called is detected based on the class object calling it at runtime.
Example:
< ?
class Person
{
public function Talk()
{
echo "English";
}
}
class Language extends Person
{
public function Talk()
{
echo "French";
}
}
function CallMethod(Person $p)
{
$p->Talk();
}
$l = new Language();
CallMethod($l);
?>
Output:
French;
Difference between include and require in PHP?
What’s the difference between include and require in PHP?
require(): If the file is not found by require(), it will cause a fatal error and halt the execution of the script.
include(): If the file is not found by include(), a warning will be issued, but execution will continue.
require(): If the file is not found by require(), it will cause a fatal error and halt the execution of the script.
include(): If the file is not found by include(), a warning will be issued, but execution will continue.
