Basic PHP Tutorial 5: If else and else if conditional statements

Key Takeaways

hello and welcome to the fifth php tutorial in this tutorial we're going to get into one of the more basic functionalities of pretty much any programming language you have like if else statements and then you have four and while loops um that are pretty much in every single language so let's do the if statements first and you you don't have to follow if with else um but you can follow it with else but for now all we're going to do is show you a quick if statement the syntax for an if statement is you say if and then in the in parentheses you specify whatever um the case that you're looking for is and then um what you actually produce if that is the case is within these curly braces so um and with python i'm not going to get too much too into depth about this but um they call this kind of like your standards and you could in theory code everything on in one line you or or like you wouldn't have to indent but generally what you do is every time you have like a new um statement of some sort or something that's within a parent of something else so in this case whatever is encased in this if statement like what you want to do you would code it here and say stuff you wouldn't want to encode it here and say stuff so anyway um we'll get more into that and i'm not really or at least you'll see me using these standards it's just a good idea to get used to them because for one for you to read your own code and then also for other people to ever read your code if you're ever working with somebody or if you have like a question nobody wants to answer your question if your standards are horrible and they can't read your code this is really just kind of a pain so anyway keep that in mind because like some languages like if you're coming from python it just automatically gives you beautiful standards it doesn't request that you do any of this so if you're not used to it you'll just have to start doing it so let's do if and we'll do name and then the way you do this is if an irregular equal sign is an assignment this is a double equal sign is a comparison so if name equals and we're going to say harrison um then we want to do something right we've already said it equals harrison so this will be the case now you might also see and we'll go into detail with this um in another video but you might also see triple equals in the case of string data it's not as as useful as if like if we were doing age like if we had an if statement regarding age you don't type this out with me i'm just going to show you like if we did if age equals 99 that means one thing but if you said if age triple equals 99 this would be true but if you said if age equals just 99 like the integer type of data this would actually return a false value but if you did if age equals equals 99 it would return a true so double equals just tries to compare it on you know the value itself not data type but a triple equals is going to require the exact same data type so anyway just keep that in mind it really doesn't matter in this case i'm just going to use double equals when you're comparing string data it's not as big of an issue unless it has you know numbers within it so we're going to say if name equals harrison now within this you can do this is where you're going to code whatever you want it to do so we're going to say echo and let's just have it echo strong hello and then close off our strong tags close off our statement and that's it so we'll save that put it up on the server and actually let's delete this part so we don't see a bunch of different code and we'll refresh and obviously name did equal harrison so it says of course hello harrison