6.2.4 Overriding functionsThis is NOT the latest copy of this book; click here for the latest version.
PHP allows us to redefine functions in sub-classes, which means we can make the poodle class have its own version of bark(). This is done by simply redefining the function the function inside the child class, making the poodle class look like this:
class poodle extends dog {
public function bark() {
print "Yip!\n";
}
}
We'll come back to inheritance and all the neat ways you can use it after we take a look at objects - actual instances of our classes.
|
Want to see this stuff in print? PHP in a Nutshell takes the core topics covered here, adds in thousands of edits from the editorial team and myself, and combines them to make an unbeatable reference for PHP programmers at all levels.
My latest book has hundreds more tips on how to use PHP, Apache, and MySQL, plus Perl, Python, shell scripts, performance tuning, and more!
|
