This is a solution to the problem of argument type based overloading in PHP. As far as I know this should work in PHP4 and PHP5.

class Viewer {
  function display($v) {
    $class = get_class($v);
    $function = "display_$class";
    if(method_exists($this, $function) ){
    } else {

This class can then be extended and used like this:

class PDOViewer extends Viewer {
  function display_PDO($item) {
    echo "This is a PDO item";
$viewer = new PDOViewer;
$viewer->display(new PDO);

9,447 thoughts on “Function Overloading in PHP5 and PHP4

  1. off white
    August 7, 2022

    My husband and i got lucky when Raymond could complete his homework using the precious recommendations he came across through your site. It’s not at all simplistic just to choose to be offering guidance which often people might have been making money from. And we all remember we have got the blog owner to appreciate for that. The type of explanations you’ve made, the easy web site navigation, the relationships you can make it easier to promote – it’s got all remarkable, and it is making our son in addition to our family reason why the subject matter is entertaining, which is highly fundamental. Thanks for all!
    off white

  2. curry 7 shoes
    August 7, 2022

    I am also writing to let you know of the cool discovery my cousin’s daughter had reading through your blog. She discovered too many pieces, which include what it’s like to possess a wonderful helping spirit to make other people without difficulty know a variety of problematic matters. You truly did more than readers’ expectations. Thanks for presenting these insightful, trustworthy, edifying not to mention fun thoughts on your topic to Tanya.
    curry 7 shoes

  3. cheap kobe bryant shoes
    August 8, 2022

    I and my buddies came digesting the excellent points located on your site and so before long I got a terrible feeling I never thanked the blog owner for those techniques. All of the ladies came so happy to learn all of them and have now really been using those things. Appreciate your genuinely really helpful and then for obtaining this form of impressive issues most people are really desirous to learn about. My very own honest regret for not expressing appreciation to you earlier.
    cheap kobe bryant shoes

  4. supreme
    August 8, 2022

    I actually wanted to type a comment in order to say thanks to you for the fabulous strategies you are giving here. My prolonged internet look up has finally been paid with professional details to exchange with my company. I ‘d say that many of us visitors are undeniably lucky to live in a good community with so many wonderful individuals with very helpful plans. I feel very much lucky to have used your webpage and look forward to tons of more thrilling times reading here. Thank you once again for everything.

  5. cheap curry 6
    August 8, 2022

    My wife and i ended up being really glad Raymond managed to carry out his preliminary research through your precious recommendations he discovered out of your web pages. It’s not at all simplistic to just continually be giving out guidelines which often some other people may have been trying to sell. And now we recognize we have got the website owner to give thanks to because of that. The specific explanations you made, the easy blog navigation, the friendships you can help to engender – it’s got many superb, and it’s leading our son and our family understand this matter is satisfying, which is quite mandatory. Thanks for all!
    cheap curry 6

  6. yeezy 350 v2
    August 8, 2022

    I precisely wished to thank you very much again. I am not sure the things I would’ve worked on in the absence of those tips provided by you relating to such concern. Entirely was an absolute alarming case for me personally, however , discovering a new specialized technique you resolved the issue took me to jump with fulfillment. I am happier for this work and as well , sincerely hope you are aware of a powerful job that you’re carrying out instructing the others via your web site. I am sure you haven’t come across any of us.
    yeezy 350 v2

  7. kyrie 5 spongebob
    August 8, 2022

    I as well as my pals appeared to be checking the good pointers from your web blog and suddenly came up with a horrible suspicion I had not expressed respect to the blog owner for those tips. The young boys had been consequently stimulated to see them and now have honestly been taking advantage of those things. Many thanks for actually being really accommodating as well as for making a choice on some outstanding areas millions of individuals are really wanting to learn about. Our own sincere apologies for not expressing appreciation to sooner.
    kyrie 5 spongebob

  8. Kagome
    August 8, 2022

    Hey ! I just wanted to say thankyou for letting us know about this . Been trying to look for this article.

  9. Spelm
    August 9, 2022

    Your email address will not be published. Required fields are marked * The federal government will be lifting vaccinate mandates for air travel as of June 20, but not all destinations are accessible to unvaccinated tourists. has compiled a list of some of the countries that have opened their doors to unvaccinated visitors from Canada. This doesn??™t mean to say players can??™t win real money this way. They just need to pay attention to the conditions. Any online real money casino in Canada will always have requirements. In fact, this is not strictly limited to no deposit bonuses. This is where casinos can make some of their own money back. There are selected free slots on reputed online casinos that pay real money. There are offers and deposit bonuses available at these casinos to reward players for their loyalty too. While you can expect to win money without a deposit, you can also decide to add funds and get over 100 free spins as part of deposit bonuses. Unlike in other online poker rooms, the rake on Pokermaster is calculated once the table time expires. When a table stopped, the agent will basically collect all funds and calculate the rake charged per player. Fast, Secure, Reliable Shipping at the lowest Chance Kornuth came in second place for the second straight day, earning $124,000. He finished in the same slot on Wednesday in the $10,000 No-Limit Hold ??™em tournament at the PokerGo studio in Las Vegas. That one paid him $164,900 after he lost to Issac Baron in heads-up play. The poker pro, and Chip Leader Coaching founder, just might be the favorite to win the coveted Purple Jacket awarded to the overall Poker Masters series champion. Do you think poker players started purchasing Bitcoin because they are financial wizards who can see into the future?

  10. kevin durant shoes
    August 9, 2022

    My wife and i got really comfortable that Albert could conclude his research through the precious recommendations he gained in your blog. It is now and again perplexing to simply always be giving for free guidance which usually some people may have been selling. And we consider we now have the writer to give thanks to for that. All the illustrations you’ve made, the simple site menu, the friendships your site make it easier to create – it’s got many powerful, and it’s aiding our son and the family understand this topic is interesting, and that’s seriously vital. Many thanks for everything!
    kevin durant shoes

  11. off white jordan 1
    August 9, 2022

    I definitely wanted to post a quick note so as to appreciate you for some of the precious hints you are giving out at this site. My prolonged internet research has at the end of the day been recognized with awesome knowledge to share with my great friends. I would state that that most of us site visitors actually are very much endowed to live in a magnificent place with very many awesome individuals with good principles. I feel somewhat fortunate to have come across your entire web page and look forward to tons of more thrilling minutes reading here. Thanks once more for everything.
    off white jordan 1

  12. supreme t shirt
    August 9, 2022

    I precisely needed to say thanks all over again. I’m not certain what I would have gone through in the absence of the type of methods provided by you about such a theme. Previously it was a very fearsome condition in my circumstances, nevertheless witnessing this professional technique you handled the issue made me to weep with gladness. I am just happier for this assistance and pray you are aware of a great job you are carrying out instructing others via your website. I am certain you haven’t encountered any of us.
    supreme t shirt

  13. cheap jordans
    August 9, 2022

    Thanks a lot for giving everyone remarkably superb opportunity to read from this website. It’s always very great and as well , jam-packed with a great time for me personally and my office co-workers to visit your site really thrice a week to read through the latest things you have. And of course, we’re actually satisfied considering the excellent pointers you serve. Some 1 tips on this page are ultimately the best we have all had.
    cheap jordans

  14. Dennistow
    August 9, 2022

    ?????????? ?????????

  15. Dennistow
    August 10, 2022

    ????????? ????????

Leave a Reply