WEBVTT 00:00.800 --> 00:03.770 I will call you back again to another video lecture in PHP. 00:03.770 --> 00:10.190 And in this video lecture, let's go ahead and uh, look at, uh, decision making statements known 00:10.190 --> 00:12.020 as if statement. 00:18.770 --> 00:24.650 So in PHP we have a decision making statement that is not as a if statement. 00:24.650 --> 00:29.030 And the if statement helps us to be able to give conditions. 00:29.030 --> 00:35.540 And in that way we make computer to actually be creative in executing programs. 00:35.870 --> 00:39.920 So I have this little write up I put down here. 00:39.920 --> 00:43.610 I said I want to become a full stack developer. 00:43.970 --> 00:55.580 Then the first condition is if I learn PHP, I will become a back end developer, else I will remain 00:55.610 --> 00:57.860 a front end developer. 00:57.860 --> 00:59.960 So there is a two conditions right in here. 01:00.950 --> 01:04.980 If I learn PHP, I will become a back end developer. 01:06.240 --> 01:08.820 Else I will remain a front end developer. 01:08.850 --> 01:16.860 Now let's go ahead and move on to sites dot PHP, and let's go ahead and use the if else or the if condition 01:16.860 --> 01:20.010 to actually put this into practice. 01:20.670 --> 01:25.140 No I'll go ahead and create a variable. 01:25.140 --> 01:32.940 And I'm going to name this to be is called this to be is back end. 01:34.080 --> 01:36.990 Or let's go ahead and call it to be is p p. 01:39.240 --> 01:39.660 All right. 01:39.660 --> 01:42.360 So if PHP is there we check. 01:42.360 --> 01:46.260 Maybe if it is true then is a back end developer. 01:46.950 --> 01:52.710 So let's go ahead and say if and then we'll go ahead and say if. 01:53.160 --> 02:00.690 And the URL is always puts the dollar sign is PHP. 02:01.170 --> 02:06.280 And we'll go ahead and give the condition equal. 02:07.960 --> 02:09.940 So it's good to be. 02:11.050 --> 02:13.810 You are a back. 02:16.060 --> 02:18.070 End developer. 02:18.820 --> 02:21.340 So let's go ahead and save this. 02:21.580 --> 02:24.760 And we go ahead and refresh this and check it out. 02:24.850 --> 02:27.130 You are a back end developer. 02:27.130 --> 02:29.680 So if this is false. 02:29.710 --> 02:32.440 Let's go and see if this is false. 02:32.860 --> 02:36.610 Save this and nothing is being done. 02:36.610 --> 02:42.910 So if is PHP is equal to true you are a back end developer. 02:42.940 --> 02:50.920 Now when it is false, then we can go ahead and say else and we'll go ahead and put our code right in 02:50.920 --> 02:51.520 here. 02:51.670 --> 02:53.800 Go ahead and say equal. 02:55.570 --> 03:06.470 And it's going to be you are a front end Developer. 03:07.460 --> 03:07.940 All right. 03:07.940 --> 03:09.590 Let's go ahead and refresh and check it out. 03:09.620 --> 03:11.750 You are a front end developer. 03:11.750 --> 03:19.370 So if the PHP is true again and check it out, you are a back end developer. 03:20.000 --> 03:29.780 So now what if we go ahead and see when we have is HTML. 03:32.120 --> 03:34.160 Is HTML. 03:37.100 --> 03:38.210 CSS. 03:38.780 --> 03:42.680 So and how can I just put this to be HTML. 03:42.680 --> 03:48.830 And the CSS we are going to be is ASC one for easy understanding. 03:48.830 --> 03:50.450 So we don't run into a problem. 03:50.480 --> 03:53.120 Let's go ahead and see is HTML. 03:53.120 --> 03:56.660 And let this be equal to true. 03:56.690 --> 03:59.660 And go ahead and put a semicolon and end. 03:59.660 --> 04:01.820 And now let's go ahead and refresh. 04:02.480 --> 04:04.250 You are a back end developer. 04:04.250 --> 04:08.460 So we are actually checking for East PHP. 04:08.550 --> 04:20.820 Now if we have what is called is true for PHP and HTML, that is what is going to be a full stack developer. 04:20.850 --> 04:23.100 Now we got to give a condition. 04:23.130 --> 04:25.590 Now let's go ahead and give this condition. 04:25.590 --> 04:30.150 And I'm going to say that this condition is going to be else. 04:34.290 --> 04:41.670 Now when my condition now which we inserted in between and that is going to be our equal. 04:41.670 --> 04:50.760 And it's going to say you are a full stack developer. 04:51.090 --> 04:51.720 All right. 04:51.750 --> 04:53.700 Let's go ahead and save this and refresh this. 04:54.690 --> 04:59.400 So it says is this an unexpected error and. 05:01.980 --> 05:05.220 Unexpected to come in line 13. 05:05.220 --> 05:08.790 And that is okay. 05:08.940 --> 05:15.770 What Or actually happened is that we joined in and we didn't give any condition and we move in. 05:15.770 --> 05:27.140 So is p, h p and the ampersand is HTML and CSS. 05:27.500 --> 05:33.860 So always put in your dollar sign and go ahead and put in your dollar sign. 05:33.860 --> 05:34.970 And let's save this. 05:34.970 --> 05:37.190 So I had other phrases to check it out. 05:37.220 --> 05:39.380 You are a back end developer. 05:40.460 --> 05:47.870 And uh the reason why this is, is because we still have this PHP to read in here. 05:47.960 --> 05:50.420 And uh, let's go ahead and see. 05:51.680 --> 05:54.440 I give it a condition and. 05:56.840 --> 05:57.830 Is. 06:00.080 --> 06:04.460 Test HTML and it's something we can actually put in here. 06:04.760 --> 06:05.600 Let me see. 06:05.810 --> 06:09.380 We put notes and a rest refresh. 06:09.410 --> 06:13.410 Say you are a full stack developer in Austin. 06:13.440 --> 06:17.280 So what this means is that this is not true. 06:17.730 --> 06:19.860 It's just like saying that this is AWS. 06:19.890 --> 06:20.610 Let's go back. 06:20.640 --> 06:21.330 We're in here. 06:21.330 --> 06:28.680 And, uh, within, if we put this to be false, it's going to affect the back end developer. 06:28.800 --> 06:30.150 It's called refresh. 06:30.180 --> 06:33.420 And we're going to have new front end developer. 06:33.450 --> 06:37.290 So when we have both of them true. 06:37.320 --> 06:40.440 That is when we have front end first time developer. 06:40.470 --> 06:49.200 But if we go over here and I say that this is not true, that is the first statement we give any of 06:49.200 --> 06:49.440 them. 06:49.440 --> 06:53.670 Not the not condition makes this to be negative. 06:54.330 --> 06:55.050 You understand? 06:55.080 --> 07:01.260 Now I have changed this again to to be true and save. 07:01.260 --> 07:02.550 These are refresh. 07:02.580 --> 07:10.410 You are a full stack developer because it is only the else if statement that shows that is true and 07:10.410 --> 07:12.670 that is HTML, CSS is true. 07:12.670 --> 07:15.760 That means you are a full stack developer. 07:15.790 --> 07:16.390 What? 07:16.420 --> 07:24.760 When you have the if statement when we have is PHP true and the is HTML and CSS not true? 07:24.790 --> 07:26.860 This means not true. 07:26.890 --> 07:30.010 That means you are a back end developer. 07:31.750 --> 07:37.030 So your PHP is true was CSS is not true. 07:37.060 --> 07:38.770 You are just a back end developer. 07:38.800 --> 07:43.180 Well, when we have just only HTML is true. 07:43.210 --> 07:46.240 That means you are a front end developer. 07:47.560 --> 07:58.270 So if we go right in here and change the HTML, the is PHP to be false. 07:58.540 --> 08:00.460 Can I save this on a fresh? 08:00.670 --> 08:03.010 You are a front end developer. 08:03.640 --> 08:06.280 So you can see that now. 08:06.280 --> 08:07.270 I hope that is cool. 08:07.300 --> 08:10.930 And this is a way in PHP you can use the if statement. 08:10.930 --> 08:16.730 So we're going to do more with this because this is just an interrupt your path to power decision making 08:16.730 --> 08:18.320 statement in PHP. 08:18.440 --> 08:23.510 So in that way we can actually do so many things. 08:23.570 --> 08:26.570 You can actually change this to maybe like or. 08:26.870 --> 08:33.230 So if any one of these is then you can actually say UI full stack developer. 08:33.230 --> 08:36.710 But that is not really you see that is a full stack developer. 08:36.710 --> 08:40.880 But for you to be a full stack developer, both of them must be true. 08:40.910 --> 08:45.410 You must have the knowledge of the front end and the back end. 08:45.440 --> 08:46.070 All right. 08:46.070 --> 08:51.230 So if you have only the knowledge of the front end, you are your front end developer. 08:51.230 --> 08:56.540 If you have only the knowledge of the back end, you are a back end developer. 08:56.750 --> 09:00.740 So if you have both knowledge you are a full stack developer. 09:00.740 --> 09:02.060 So all right is cool. 09:02.060 --> 09:03.440 So go ahead and put it down. 09:03.440 --> 09:04.250 Practice with it. 09:04.250 --> 09:09.320 And if you have any question please go ahead and use the question and answer section. 09:09.320 --> 09:11.960 And I'm going to get back to you as soon as possible. 09:11.990 --> 09:12.980 Thank you so much. 09:12.980 --> 09:16.550 And I'm going to see you in the next video lecture.