WEBVTT 00:00.200 --> 00:03.740 I will call you back again to another video lecture in PHP. 00:03.740 --> 00:11.360 And in this video lecture we go ahead and look at return statement in PHP. 00:18.110 --> 00:24.200 So let's go ahead and learn about return statement because in the previous lecture we discussed about 00:24.200 --> 00:24.950 functions. 00:24.950 --> 00:29.180 And right now I want us to discuss about something very important in functions. 00:29.180 --> 00:32.570 And that is the return statement okay. 00:32.570 --> 00:33.800 Let's go ahead and create a function. 00:33.800 --> 00:34.280 Ready. 00:34.310 --> 00:36.350 Let me go ahead and say this is a function. 00:36.350 --> 00:41.810 And uh let the function name be cube roots. 00:42.020 --> 00:42.440 All right. 00:42.470 --> 00:44.240 So this is called cube roots. 00:44.420 --> 00:49.970 Now the aim of this function I created is for us to calculate cube roots. 00:50.060 --> 00:56.900 So let me go ahead and say equal to what's y to what's it like to. 00:56.930 --> 01:01.100 And then we go ahead and call the function. 01:02.090 --> 01:04.190 And this is cube root. 01:04.490 --> 01:07.820 Then let's go ahead and check this out. 01:08.150 --> 01:10.160 So that is eight its number. 01:10.190 --> 01:14.720 Now, I want us to use a return statement here. 01:14.720 --> 01:17.300 How can we be able to use a return statement here? 01:17.690 --> 01:20.120 So it's very important to learn about that. 01:20.300 --> 01:20.840 All right. 01:20.840 --> 01:25.430 So now I want to remove whatever I have right in here. 01:25.460 --> 01:29.540 So I want to see how to use a return statement in PHP. 01:29.720 --> 01:35.090 And here I'll go right here I'll remove this door I'm going to call that back. 01:35.120 --> 01:38.810 What I want us to take this as a as one step at a time. 01:38.810 --> 01:46.010 Now I want to create something so that once you add such a number, would that be two, three, four, 01:46.010 --> 01:47.120 five, six times? 01:47.150 --> 01:52.370 How many times you want that to be done just inside a number and to give it a culprit of that number? 01:52.370 --> 01:59.900 Now what I'm going to do is go right in here and let's create a variable and let the name of the variable 01:59.930 --> 02:02.870 be equal to num. 02:02.870 --> 02:13.610 And let's say num is multiply another variable of norm and multiply another variable of known. 02:14.690 --> 02:15.140 Right. 02:15.170 --> 02:16.940 So press semicolon at the end. 02:16.970 --> 02:25.100 Now we're going to pass this into this function and that is going to be known. 02:25.100 --> 02:27.410 So now we pass this right in there. 02:27.410 --> 02:34.160 So we need to enter a return statement so that when we call this function, any number that is being 02:34.190 --> 02:39.320 inserted right in there is going to give us, we're going to get the cube root of that number. 02:39.350 --> 02:41.060 Now let's go right in here. 02:41.060 --> 02:45.320 So come over here and let us say return. 02:45.320 --> 02:49.940 So I've added a return statement at the end of at the beginning of this. 02:49.940 --> 02:50.840 Not at the end. 02:50.870 --> 02:55.220 At the beginning you can see we're trying to return the cube root that is number. 02:55.220 --> 02:56.840 Multiply the number. 02:56.870 --> 02:58.430 Multiply number. 02:58.430 --> 03:01.670 So that is non multiply unknown multiply unknown. 03:01.670 --> 03:05.480 So whatever number you insert into multiply that three times. 03:05.480 --> 03:09.260 And then we go right in here and call that number. 03:09.260 --> 03:14.630 So let's go ahead and uh call the function. 03:14.630 --> 03:20.900 So A and C echo and their cube root. 03:21.080 --> 03:24.350 So we're trying to call the function right now. 03:24.380 --> 03:26.390 Then go ahead and press semicolon. 03:26.420 --> 03:27.510 Now any number. 03:27.510 --> 03:28.680 I insert it here. 03:28.710 --> 03:33.210 Let me go ahead and say I insert three is going to return the cube root of three. 03:33.210 --> 03:35.820 So go ahead and refresh this and let's check it out. 03:35.820 --> 03:38.970 So you can be able to see we have 27. 03:38.970 --> 03:43.830 So you can see that error statement actually return the cube root. 03:43.860 --> 03:52.680 Now what happens right in here is that any time we use a return statement we are telling PHP that whatever 03:52.680 --> 03:55.320 that is in that function should be returned. 03:55.320 --> 04:00.090 So anything that we write after the return statement, we must be returned. 04:00.120 --> 04:03.960 Let's go ahead and say done here I put in echo. 04:03.990 --> 04:04.860 Hello. 04:07.470 --> 04:08.400 Hello world. 04:08.490 --> 04:12.210 And let's go ahead and try to run this code and check it out. 04:12.210 --> 04:19.470 So you can see I'm trying to run this code and I'm getting only 27 because in PHP, once you use the 04:19.470 --> 04:26.700 word return you often in PHP that everything is done if you've broken out of the code. 04:26.700 --> 04:29.760 So nothing again is going to be run on a ten. 04:29.790 --> 04:38.550 Now, if I should go over here and, uh, cut this, then Let me go and put this right before the return 04:38.550 --> 04:39.210 statement. 04:39.240 --> 04:42.360 Now let's save this again and refresh this. 04:42.390 --> 04:43.170 Hello, world. 04:43.200 --> 04:47.610 Let's go ahead and put a brick dog in here. 04:47.640 --> 04:49.740 Going to save this and refresh. 04:49.740 --> 04:52.020 So you can see I have Hello World. 04:52.020 --> 04:53.760 And below is 27. 04:53.760 --> 05:00.960 So once he is in the world return you actually changed PHP that it should execute whatever you have 05:00.960 --> 05:04.860 in the code that is before the return statement. 05:05.760 --> 05:06.750 I hope that is cool. 05:06.750 --> 05:11.250 So if you add anything after the return statement that will never be executed. 05:13.350 --> 05:13.980 You understand. 05:13.980 --> 05:18.450 So this is an introductory part to return statement in PHP. 05:18.630 --> 05:22.890 Go ahead and practice that you can be able to do so much more with that. 05:22.890 --> 05:24.810 And it's going to be very important. 05:24.810 --> 05:28.410 And it really plays a very vital role in PHP. 05:28.800 --> 05:29.220 Alright. 05:29.220 --> 05:35.640 So why not practice with that and uh, check out more or return statement and if you have any questions 05:35.640 --> 05:38.070 please use the question and answer section. 05:38.070 --> 05:40.740 And I'm going to get back to you as soon as possible. 05:40.770 --> 05:41.760 Thank you so much. 05:41.760 --> 05:44.760 And I'm going to see you in the next video lecture.