Please continue your good work on PHP course.. its very late from our end.. but we want to learn good things from someone like you.. your approach and teaching methodology is simply superb!
Thank you Shasi, I am glad you like videos. The course is almost complete to where I want it to be for now, but I am adding things to it as I make them
Thank you Kenneth, I welcome you to the course. I am sloooowly working on new content, now I am in the process of moving so there is a bit of logistics involved, and I am also in full time studying. So it is a balancing act, but I do work on it whenever I get a chance. Few videos for TH-cam are almost ready and one new module for the course is half done, so new videos are coming soon*
After I finished your oop cms I will buy your course design patterns soon. Your way of teaching theory and practical example is the best. I already subscribed your channel.😊😉
Welcome and thank you for your trust! :) I really hope that you will enjoy the course and get all is benefits. Please do not hesitate to ask me whatever comes to your mind or any feedback you might have. What do you hope design patterns will help you with?
@@ApplicableProgramming Both ^^ I'm a freelancer who wants to improve further. I've bought your course :) . I've worked with Laravel over the last years and had a some moments where I realized that I was applying some things but not understanding them 100%. :)
@@rieltork2360 you will not believe it but when I saw your comment, I checked the list of students in last few weeks and could not connect you to anyone by username :) So I had a hunch, but failed to deliver to the feeling. Did the course help in any way, if I may ask so publicly? :D
That is a very good point actually, services should be verbs. I wanted to gradually build up the course from first lesson so that it grows slowly I guess, so yeah.. a lot of things to think about at the same time :) Do you use Design Patterns in your projects?
Why use depencency injection and not inheritance? Have a parent Mailer class that defines the generic methods, and then a couple of child classes that implement some interface, each according to their own specific need...
That is a good question. Why not both? Basically the dependency injection "solves" the problem of having classes depend on each other, like Mailer and Database in this example. There is nothing preventing us to inherit the Mailer and have its children do more specific functions like GmailMailer, MailgunMailer, SmtpMailer etc. Inheritance would in this case extend the functionality of the class, while dependency injection would keep it from doing more the "just sending emails" (like creating database objects etc). Or was there something else you had in mind?
Hi i am a medical doctor, studying programming (currently Php) my aim is to branch out of medical career to software development and development of healthcare apps. great video on php. however i am confused when to use methods and not.
That is a great question. I like that you are using your existing credibility and leverage for going into the new field, it is a huge plus knowing two fields. If you are asking about methods vs functions, it comes down to preference or to architectural choices. You can achieve a lot with functional programming, however object approach has a lot of benefits, and majority of modern apps and libraries use object approach (methods). I personally go with oop/methods by default as I am very used to it, but it is not something you have to choose exclusively. Was that the question you had, or were you confused about the methods in some other context?
@@btm1 that is a very interesting point, but I do wonder how much one must specialise in something in order to be able to make something with it. I bought a 3d printer, and in no way am i going to be a specialist in 3d, but I do manage to make some relatively complex things using it... One engineer could say the same for me, i wonder..
I would recommend learning NodeJs/TypeScript as well. I've seen more than one job offer for healthcare and HIPAA compliant data exchange services that were based on them. They're based on HL7/FHIR standard too if you want to learn something that's not a language specific but will likely be needed.
I've always hated the term, "Dependency Injection": the correct term should be "Implementation Injection" because it focuses the coder's attention on what should be done: leverage the power of Interfaces to inject (different) behaviors. The is what "...coding to an interface" means (i.e.: composition over inheritance
I see your point. But you can use dependency injection without interfaces/implementation, and also interfaces/implementation without DI? F.eks. vanilla JavaScript, not that much support for interfaces, but you can still use dependency injection pattern. In that case, implementation injection is a bit questionable, as who knows what implementation looks like. But we know there are dependencies for sure. Still sounds like two different things to me, but i would like to think about your point a bit more
Thanks. I mentioned Symfony here because OOP is more visible when you write code, but in the actual course no framework is used, just examples of design pattern are mentioned. Anyway, frameworks come and disappear. I remember when jQuery was very popular, but that doesn't make it good though :)
the problem with the dependency injection is that if you have a class that dependents on too many external classes, you will have an extremely long constructor. IDK if there is a solution to this?
That could be true. Easiest solution (easier said then done) is to not have too many dependencies. If your class is focused on one thing only, rarely will it have that many dependencies inserted in the constructor. You could use a Factory Pattern for constructing and configuring dependencies. But that could be misusing the factory pattern to be honest. Again the best is not to have too many dependencies, as that usually means that you are doing way too many things in the class. Do you have an example of a class that might have a lot of dependencies in the constructor?
@@ApplicableProgramming Currently I can't remember when I have faced this issue so I don't know where it resides in my past projects. But I remember it bothered me a lot. Yet another problem with this is the order of the dependencies. Let's imagine if an object doesn't need the other class but rather the second in the constructor but in any case you have inject to first variable to reach the second one which is actually needed by the class. We can pass it as an array argument but it has it's disadavantages too. Thanks for your fast reply.
@@Quynn-Oneal Could that particular case be improved with soft dependencies? Like configureFunctionalityA($object1, $object2);, and configureFunctionalityB($object2, $object3)? And throw exception in case required dependency is missing in the main method you want to perform the action in? something like Imagine library (and libraries in general) is doing when you want to say resize, you would send in configuration objects as dependencies only for that particular operation imagine.readthedocs.io/en/stable/usage/introduction.html#resize-images Because if you would to put them in the constructor, you would get a huge mess of nulls on different places, as each operation might have a different dependency need. Would that maybe solve the first example you were referring to?
So underneath services are dependency injection containers? The point is to construct objects somewhere and store them in container (for example) associative array. And then you can get object with associative array key?
That sounds like a way of making dependency injection container yeah. Associative array is used as a map in php, so that would point to the correct service. You would need a bit of logic around initializing those services, and properly resolving them if they exist in the map or not. To be honest I never made dependency injection container, I just used ones that come with Laravel/Yii2, in smaller projects I would just inject needed service directly from the controller. I do not need it more complicated then that. While I was researching this topic I did find the PHP-DI 6 library php-di.org/ that looks like it does all one might need for injection dependencies into objects, maybe you can check that out if you want to make one or see how they do it behind the scenes. But yeah, I would also start the way you explained it.
Hvala Elvira. Nazalost nemam nista na Srpskom/Balkanskom, iz prostog razloga jer je ista kolicina posla za sadrzaj, a iskljucuje 98% mogucnosti potencijala koji sadrzaj moze da dostigne :)
@@ApplicableProgramming Hvala na odgovoru Dalibore i slazem se s tobom, ipak je engleski sluzbeni jezik u software developmentu. Pitala sam iz kurioziteta, balkansko trziste jos nitko nije pokrio, a vjerujem da bi imao puno uspijeha i kod nas. Zelim ti sve najbolje i veliki pozdrav iz Frankfurta!
Magneto is great resource to learn how to organizes your code and how to use design patterns but unfortunately it is over engineered and that’s an important lesson too. Making everything a pattern and adding a level of abstraction to everything make the code base incomprehensible and unreadable even for experienced programmers - aside the fact it makes the system very heavy resource wise
oh yeah that is for sure a thing. However, mostly patterns and abstractions are in use when they solve some problems as they occur, and not just for the fun of it. At least that is how I think about it :) why would you complicate something that works just great?
@@ApplicableProgramming yeah, not every thing need to become a design pattern, many people overdo it unnecessarily, have you played with Magento? I think you would agree with me, 2gigs of ram in order to run according to the docs.. 2gigs...omg
Do you plan to add Filter pattern to your course? If you will try to find something about that pattern Google gives you a couple results only. (Thank you for your video)
Good suggestion. I am planning to add two more patterns in the course, and do a couple of "honorable mentioned". Since filter pattern is not that popular/used, it will probably end up on the latter group. But i cannot guarantee when will that happen. Do you have a specific use for it? I've seen some examples on the internet that so not that difficult to convert in PHP as well
Personally I know JS, PHP and Python, but use PHP the least (not at all, if I can help it). These days it's mostly used to either maintain legacy software or for Wordpress. Not exactly cutting edge stuff.
@@Zullv yeah probably the same here in Norway. Although to be honest, more and more corporates use it for "quick" projects. In my previous company we used it with CraftCMS for our websites, but then we also replaces our gigantic Java CRM system with VtigerCRM which is also written in PHP, just because they are more flexible and faster to work with. So... I guess it depends on where you are and what you do, but I would not give up on it yet to be honest :) In the end, it is just a tool/language that can solve the problem at hand, all principles from the video apply to other languages/tools as well :)
Bro, you seem to be talking to yourself and many instance you seem confused yourself.. Conclusion: I came back to where i started - all confused. Your presentation, flow and examples need a lot of improvement. Especially, when you say "previous video or course..". Tried look looking for the "previous" and could not find one. My suggestion is: Please redo the whole playlist. This is just my feedback, not necessarily the same for others.
Thank you for your feedback, I really appreciate it. I think that the most confusion comes because this 30min video is compilation of a full 8 hours course, that is why I mention "in previous video", because this is just a course preview as I mentioned in the description. I do see your point, makes sense that it is confusing when videos are missing in between
Hi, not at the level it was when the course was at the beginning. That was for early supporters who "believed". It is still discounted though, as now the course has about 4-5 hours and 7 modules, so it is priced accordingly. In fact, the price will probably go up in few weeks when I add two more modules (which you get for free if you purchase with todays prices)
Please continue your good work on PHP course.. its very late from our end.. but we want to learn good things from someone like you.. your approach and teaching methodology is simply superb!
Thank you Shasi, I am glad you like videos. The course is almost complete to where I want it to be for now, but I am adding things to it as I make them
I found this channel late, but t help me a lot, thank you so much Dalibor Jovic!
Glad to hear that Reuben, thanks
what a nice explanation. Thank you.
Glad i could help! Consider sharing with someone who might benefit from the video
Great. I will purchase course I hope you continue making lessons. Only place to find non-junior level knowledge.
Thank you Kenneth, I welcome you to the course. I am sloooowly working on new content, now I am in the process of moving so there is a bit of logistics involved, and I am also in full time studying. So it is a balancing act, but I do work on it whenever I get a chance. Few videos for TH-cam are almost ready and one new module for the course is half done, so new videos are coming soon*
After I finished your oop cms I will buy your course design patterns soon. Your way of teaching theory and practical example is the best. I already subscribed your channel.😊😉
Thank you Edmond, that is very nice to hear. See you in the course! :)
I realy like your videos! Continue filming more, please!
Thank you so much.
My pleasure, glad you liked the video :)
May I ask what interested you into Design Patterns?
Erolled with no hesitation, I rushed to get my card, put in my number, the whole process took me less than 2 minutes!
Welcome and thank you for your trust! :) I really hope that you will enjoy the course and get all is benefits. Please do not hesitate to ask me whatever comes to your mind or any feedback you might have. What do you hope design patterns will help you with?
That presentation in the beginning expectations/reality was hilarious :D !
Thanks, glad you liked it! :)
I never saw your comment before, not sure why...
Also, I will try your course. I belive it is very useful, considering that these clips are great
Thank you for your support, it is appreciated!
Thank you
It is my pleasure :)
Really really awesome video 👍 thank you a lot
Thank you very much Rieltork. Are you already working with PHP or still learning?
@@ApplicableProgramming Both ^^ I'm a freelancer who wants to improve further. I've bought your course :) . I've worked with Laravel over the last years and had a some moments where I realized that I was applying some things but not understanding them 100%. :)
@@rieltork2360 you will not believe it but when I saw your comment, I checked the list of students in last few weeks and could not connect you to anyone by username :)
So I had a hunch, but failed to deliver to the feeling.
Did the course help in any way, if I may ask so publicly? :D
@@ApplicableProgramming I bought the course 2 days ago and will not get to it until the weekend :) But I will share the feedback here with pleasure
@@rieltork2360 Welcome to the course (I've sent you an email, in case it went to spam)
your User is actually a UserRepository/UserStorage, it cannot be named like that, same for "Email", it can be e.g. EmailSender
That is a very good point actually, services should be verbs. I wanted to gradually build up the course from first lesson so that it grows slowly I guess, so yeah.. a lot of things to think about at the same time :)
Do you use Design Patterns in your projects?
Why use depencency injection and not inheritance? Have a parent Mailer class that defines the generic methods, and then a couple of child classes that implement some interface, each according to their own specific need...
That is a good question. Why not both?
Basically the dependency injection "solves" the problem of having classes depend on each other, like Mailer and Database in this example. There is nothing preventing us to inherit the Mailer and have its children do more specific functions like GmailMailer, MailgunMailer, SmtpMailer etc.
Inheritance would in this case extend the functionality of the class, while dependency injection would keep it from doing more the "just sending emails" (like creating database objects etc).
Or was there something else you had in mind?
Hi i am a medical doctor, studying programming (currently Php) my aim is to branch out of medical career to software development and development of healthcare apps. great video on php. however i am confused when to use methods and not.
That is a great question. I like that you are using your existing credibility and leverage for going into the new field, it is a huge plus knowing two fields.
If you are asking about methods vs functions, it comes down to preference or to architectural choices. You can achieve a lot with functional programming, however object approach has a lot of benefits, and majority of modern apps and libraries use object approach (methods). I personally go with oop/methods by default as I am very used to it, but it is not something you have to choose exclusively.
Was that the question you had, or were you confused about the methods in some other context?
Good luck to you! It will probably not be an easy journey, as it is hard to be a specialist in more than 1 field!
@@btm1 that is a very interesting point, but I do wonder how much one must specialise in something in order to be able to make something with it. I bought a 3d printer, and in no way am i going to be a specialist in 3d, but I do manage to make some relatively complex things using it... One engineer could say the same for me, i wonder..
I would recommend learning NodeJs/TypeScript as well.
I've seen more than one job offer for healthcare and HIPAA compliant data exchange services that were based on them.
They're based on HL7/FHIR standard too if you want to learn something that's not a language specific but will likely be needed.
I've always hated the term, "Dependency Injection": the correct term should be "Implementation Injection" because it focuses the coder's attention on what should be done: leverage the power of Interfaces to inject (different) behaviors. The is what "...coding to an interface" means (i.e.: composition over inheritance
I see your point. But you can use dependency injection without interfaces/implementation, and also interfaces/implementation without DI?
F.eks. vanilla JavaScript, not that much support for interfaces, but you can still use dependency injection pattern.
In that case, implementation injection is a bit questionable, as who knows what implementation looks like. But we know there are dependencies for sure.
Still sounds like two different things to me, but i would like to think about your point a bit more
1:29 Great course! You do not explain in animals but you explain in Symfony when Laravel is more popular?
Thanks. I mentioned Symfony here because OOP is more visible when you write code, but in the actual course no framework is used, just examples of design pattern are mentioned. Anyway, frameworks come and disappear. I remember when jQuery was very popular, but that doesn't make it good though :)
at 24:51 I do go over one example in Laravel :)
the problem with the dependency injection is that if you have a class that dependents on too many external classes, you will have an extremely long constructor. IDK if there is a solution to this?
That could be true. Easiest solution (easier said then done) is to not have too many dependencies. If your class is focused on one thing only, rarely will it have that many dependencies inserted in the constructor. You could use a Factory Pattern for constructing and configuring dependencies. But that could be misusing the factory pattern to be honest.
Again the best is not to have too many dependencies, as that usually means that you are doing way too many things in the class.
Do you have an example of a class that might have a lot of dependencies in the constructor?
@@ApplicableProgramming Currently I can't remember when I have faced this issue so I don't know where it resides in my past projects. But I remember it bothered me a lot.
Yet another problem with this is the order of the dependencies. Let's imagine if an object doesn't need the other class but rather the second in the constructor but in any case you have inject to first variable to reach the second one which is actually needed by the class. We can pass it as an array argument but it has it's disadavantages too.
Thanks for your fast reply.
@@Quynn-Oneal Could that particular case be improved with soft dependencies?
Like configureFunctionalityA($object1, $object2);, and configureFunctionalityB($object2, $object3)?
And throw exception in case required dependency is missing in the main method you want to perform the action in?
something like Imagine library (and libraries in general) is doing when you want to say resize, you would send in configuration objects as dependencies only for that particular operation imagine.readthedocs.io/en/stable/usage/introduction.html#resize-images
Because if you would to put them in the constructor, you would get a huge mess of nulls on different places, as each operation might have a different dependency need. Would that maybe solve the first example you were referring to?
So underneath services are dependency injection containers?
The point is to construct objects somewhere and store them in container (for
example) associative array. And then you can get object with associative
array key?
That sounds like a way of making dependency injection container yeah. Associative array is used as a map in php, so that would point to the correct service. You would need a bit of logic around initializing those services, and properly resolving them if they exist in the map or not. To be honest I never made dependency injection container, I just used ones that come with Laravel/Yii2, in smaller projects I would just inject needed service directly from the controller. I do not need it more complicated then that. While I was researching this topic I did find the PHP-DI 6 library php-di.org/ that looks like it does all one might need for injection dependencies into objects, maybe you can check that out if you want to make one or see how they do it behind the scenes. But yeah, I would also start the way you explained it.
Odličan kanal Dalibore! Imaš li materijala i na našem jeziku?
Hvala Elvira. Nazalost nemam nista na Srpskom/Balkanskom, iz prostog razloga jer je ista kolicina posla za sadrzaj, a iskljucuje 98% mogucnosti potencijala koji sadrzaj moze da dostigne :)
@@ApplicableProgramming Hvala na odgovoru Dalibore i slazem se s tobom, ipak je engleski sluzbeni jezik u software developmentu. Pitala sam iz kurioziteta, balkansko trziste jos nitko nije pokrio, a vjerujem da bi imao puno uspijeha i kod nas.
Zelim ti sve najbolje i veliki pozdrav iz Frankfurta!
@@elviradjuraskovic8156 Pozdrav za Frankfurt iz Norverske :)
nice video man 👌🏼🔥
Thanks man! May i ask how did you find the video? Did you search for design patterns in PHP?
@@ApplicableProgramming I just scrolling down yt
@@llBestBoyll Nice, finally got TH-cam to recommend videos to people :D
I assume you work with PHP, or have searched for it recently?
@@ApplicableProgramming i'm using php for more than 2 years
and i just love it as my primary langauge 🔥❤️
yeah, php is here to stay for some more time at least..
Magneto is great resource to learn how to organizes your code and how to use design patterns but unfortunately it is over engineered and that’s an important lesson too. Making everything a pattern and adding a level of abstraction to everything make the code base incomprehensible and unreadable even for experienced programmers - aside the fact it makes the system very heavy resource wise
oh yeah that is for sure a thing. However, mostly patterns and abstractions are in use when they solve some problems as they occur, and not just for the fun of it. At least that is how I think about it :) why would you complicate something that works just great?
@@ApplicableProgramming yeah, not every thing need to become a design pattern, many people overdo it unnecessarily, have you played with Magento? I think you would agree with me, 2gigs of ram in order to run according to the docs.. 2gigs...omg
@@SaiyanJin85 yeah, memory usage went trough the skyes in recent years for sure
Maxim Martsinkevich?
Not familiar with him. Was he famous?
@@ApplicableProgramming leader of the National Socialism movement in Russia
@@Maximilyan29 Oh, I thought he somehow relates to design patterns in php :) does he?
Do you plan to add Filter pattern to your course? If you will try to find something about that pattern Google gives you a couple results only. (Thank you for your video)
Good suggestion. I am planning to add two more patterns in the course, and do a couple of "honorable mentioned". Since filter pattern is not that popular/used, it will probably end up on the latter group. But i cannot guarantee when will that happen. Do you have a specific use for it? I've seen some examples on the internet that so not that difficult to convert in PHP as well
Very interesting; definitely a subject matter worth learning and spending money on. Shame you chose PHP.
Hehe, I see. What do you use? Maybe i can make the same course in another language
Personally I know JS, PHP and Python, but use PHP the least (not at all, if I can help it). These days it's mostly used to either maintain legacy software or for Wordpress. Not exactly cutting edge stuff.
@@Zullv yeah probably the same here in Norway. Although to be honest, more and more corporates use it for "quick" projects. In my previous company we used it with CraftCMS for our websites, but then we also replaces our gigantic Java CRM system with VtigerCRM which is also written in PHP, just because they are more flexible and faster to work with. So... I guess it depends on where you are and what you do, but I would not give up on it yet to be honest :)
In the end, it is just a tool/language that can solve the problem at hand, all principles from the video apply to other languages/tools as well :)
Bro, you seem to be talking to yourself and many instance you seem confused yourself.. Conclusion: I came back to where i started - all confused. Your presentation, flow and examples need a lot of improvement. Especially, when you say "previous video or course..". Tried look looking for the "previous" and could not find one. My suggestion is: Please redo the whole playlist. This is just my feedback, not necessarily the same for others.
Thank you for your feedback, I really appreciate it. I think that the most confusion comes because this 30min video is compilation of a full 8 hours course, that is why I mention "in previous video", because this is just a course preview as I mentioned in the description.
I do see your point, makes sense that it is confusing when videos are missing in between
Hi, is there any coupon code for the course?
Hi, not at the level it was when the course was at the beginning. That was for early supporters who "believed". It is still discounted though, as now the course has about 4-5 hours and 7 modules, so it is priced accordingly.
In fact, the price will probably go up in few weeks when I add two more modules (which you get for free if you purchase with todays prices)
Can I get valid coupons thanks!
Check the video description for a 70% discount (limited number of students!)