WEBVTT 00:00.620 --> 00:03.740 I will call you back again to end up with a lecture in PHP. 00:04.160 --> 00:09.260 In this video lecture we go ahead and look at the maths operators. 00:15.500 --> 00:18.080 So we are going to deal with maths. 00:18.080 --> 00:22.160 And there are some operators that we need to be able to work with maths. 00:22.190 --> 00:23.840 So let's go ahead and see. 00:23.840 --> 00:26.150 Uh we are right into PHP. 00:26.360 --> 00:36.500 We can actually go ahead and uh, do some things like calculations like say four plus one and uh, go 00:36.500 --> 00:40.010 ahead and put a semicolon and then let's go ahead and refresh this. 00:40.040 --> 00:42.620 You can see I have five right in here. 00:42.890 --> 00:50.270 And it can actually say maybe four times five five. 00:50.420 --> 00:51.020 That is four. 00:51.020 --> 00:52.430 Multiply five. 00:52.430 --> 00:54.830 And let's go ahead and say 20. 00:54.890 --> 00:58.070 And what if we go ahead and divide that. 00:58.130 --> 01:01.890 Go ahead and have a Eight. 01:01.920 --> 01:14.460 Now we can know how to do some complex things like let me see, four plus five, multiply by by two, 01:14.610 --> 01:17.310 and let's go ahead and run this code and check it out. 01:17.310 --> 01:23.610 So what actually happens is that the multiplication was done first and then it adds. 01:23.610 --> 01:31.410 So if you want to do this you can actually say put this one inside the brackets and it's going to be 01:31.440 --> 01:34.800 four plus five multiplied by two. 01:34.830 --> 01:36.090 Let's go ahead and refresh this. 01:36.090 --> 01:38.670 And you can see I have 18 right in here. 01:38.670 --> 01:42.780 So there are so many so many things I'm going to do is in the math operators. 01:42.780 --> 01:52.470 So let me go ahead and say I'm going to add this inside a a variable and let the variable name be my 01:52.500 --> 01:53.490 num. 01:53.640 --> 01:54.240 All right. 01:54.240 --> 02:03.920 So if I say my name is equal to let me say 15, then if I go ahead and equal my known. 02:04.340 --> 02:08.720 Let me see my gnome then. 02:08.750 --> 02:11.660 If you got a refresh, you can have 15 right in here. 02:11.690 --> 02:14.270 So I can be able to do so many things. 02:14.270 --> 02:14.810 Ready. 02:14.810 --> 02:28.010 And now even the variable I can actually say maybe say uh, my gnome increment, then what it actually 02:28.010 --> 02:30.620 means is that I want to add 1 to 15. 02:30.620 --> 02:33.740 If I refresh this, you can see I have a 16. 02:33.740 --> 02:40.610 And if I go ahead and say my known minus minus, I refresh, I have 14. 02:40.610 --> 02:43.310 So there are so many things I want to do. 02:43.340 --> 02:54.830 This actually is equal to me saying maybe my gnome minus one or my gnome plus. 02:56.870 --> 02:57.560 Plus one. 02:58.670 --> 03:06.060 So let's go to refresh this and see I have a 15 right in here because I have minus already in. 03:06.060 --> 03:09.360 So if I go ahead and delete this, I'll refresh this. 03:09.600 --> 03:11.070 I have 16. 03:11.490 --> 03:18.000 So if I go ahead and say minimum minus one that is 14. 03:18.600 --> 03:21.060 So there are so many things you can do. 03:21.090 --> 03:25.320 Let me say I want to add some things right in here. 03:25.350 --> 03:29.220 I got say my num. 03:31.530 --> 03:37.530 Um, let me see my known loss ten. 03:38.190 --> 03:42.390 Now this will actually give us a let's go ahead and save this. 03:42.420 --> 03:43.770 Let's go ahead and remove this here. 03:44.850 --> 03:45.720 All right. 03:46.800 --> 03:50.850 So my number is equal to 15. 03:50.850 --> 03:56.190 Then my num plus a ten. 03:56.970 --> 04:05.030 Then all I need to do now is let's go here and say my unknown is going to be equal to my plus ten. 04:05.030 --> 04:06.980 So I want to have 25. 04:07.010 --> 04:08.180 Let's go ahead and run this. 04:08.180 --> 04:09.890 And you can see I have 25. 04:10.250 --> 04:10.790 All right. 04:10.790 --> 04:17.420 So another way of doing this is actually saying that we have. 04:17.450 --> 04:30.020 Instead of saying my norm is equal to my norm plus ten, I can actually see my norm plus equal ten. 04:30.020 --> 04:32.840 And let's refresh this and have 25. 04:32.840 --> 04:42.170 So if I say minus ten minus equal and that is five because 15 minus ten is five. 04:42.170 --> 04:49.580 And if I go ahead and say minus one multiply by ten, that is 150. 04:49.610 --> 04:57.800 So if I say my norm divide equal that is 1.5. 04:58.100 --> 05:00.770 So you can see some of these things. 05:00.770 --> 05:03.710 You can actually be able to do that using PHP. 05:03.750 --> 05:05.850 and it is very, very easy. 05:05.880 --> 05:11.340 Now I'm going to introduce you some to some of the muscle operators that are needed, which it can be 05:11.340 --> 05:14.130 good to use by using simple functions. 05:14.130 --> 05:20.700 And these functions are just a small snippets of code that we can actually call to perform some specific, 05:21.000 --> 05:23.010 uh, functions or operations. 05:23.040 --> 05:24.990 Operations in PHP. 05:25.800 --> 05:29.280 So let's go ahead and introduce you to some of these muscle operators. 05:29.310 --> 05:31.320 Let me say I have a. 05:33.810 --> 05:35.880 I'm go ahead and delete this. 05:36.480 --> 05:36.870 Okay. 05:36.870 --> 05:38.280 Let me go ahead and delete this. 05:38.280 --> 05:44.190 And let me say I have a call and I have what is called an absolute value. 05:44.190 --> 05:49.320 So if I see this is absolute value so abs. 05:49.350 --> 05:52.320 And then I'll go ahead and add negative sign right in here. 05:52.350 --> 05:54.240 Let me say negative one. 05:54.360 --> 05:55.950 Uh ten. 05:55.980 --> 05:59.460 And if I refresh this I have positive ten output. 05:59.460 --> 06:01.260 So that is the absolute value. 06:01.260 --> 06:06.610 And what if I have I'll go ahead and comment on these then. 06:06.640 --> 06:15.100 What if I have let me see a Q and A power of two by three? 06:15.100 --> 06:19.090 So if I want to wish to part 2 to 3, that would give me eight. 06:19.120 --> 06:22.690 If I refresh this, you can see I have eight right in here. 06:22.720 --> 06:25.060 Now we have a square roots. 06:25.330 --> 06:27.790 Um, let's go ahead and comment on this. 06:28.480 --> 06:35.950 We have a square root and I go ahead and equal square root of uh, 8 to 1. 06:36.370 --> 06:40.990 So let's go ahead and uh check it out. 06:40.990 --> 06:42.010 That is nine. 06:42.010 --> 06:45.400 So you can actually put square roots of anything in a skirt. 06:46.060 --> 06:46.720 All right. 06:46.720 --> 06:56.200 So there are some of these mass operators you can be able to use like a max Solomon and say equal max. 06:56.200 --> 07:00.910 And then go ahead and say maybe ten and six. 07:01.210 --> 07:04.360 And uh, it's going to give you the maximum number. 07:04.360 --> 07:05.550 And that is ten. 07:05.580 --> 07:11.460 So if you want to use the minimum number, you can actually see it coming. 07:11.460 --> 07:13.110 And let's go ahead and check it out. 07:13.110 --> 07:14.400 And that is six. 07:14.700 --> 07:18.150 So there are so many math operators out there. 07:18.150 --> 07:20.790 It can be put to use and play around with them. 07:20.790 --> 07:23.430 And you can actually get something so cool. 07:23.460 --> 07:23.940 All right. 07:23.940 --> 07:26.970 So we have so many of them and they are like this. 07:26.970 --> 07:32.940 So the flow uh the cosine, the sine, the tangent and so many more are there. 07:32.940 --> 07:35.970 So we just need to go ahead and do so many results. 07:36.000 --> 07:40.860 Check it out and play around with them because you might be using them anytime in your program. 07:40.860 --> 07:42.300 And that is very cool. 07:42.300 --> 07:44.910 So this is just introduce us to mass operators. 07:44.940 --> 07:49.500 And you can be able to see what are what we can do in PHP using this mass operators. 07:49.500 --> 07:53.760 For us to be able to know that PHP has this features in them. 07:53.790 --> 07:54.360 All right. 07:54.390 --> 07:55.770 So go ahead and play with this. 07:55.800 --> 07:56.610 Check it out. 07:56.640 --> 07:59.820 If you have any questions on this use the question and answer section. 07:59.820 --> 08:02.220 And I'm going to get back to you as soon as possible. 08:02.250 --> 08:03.120 Thank you so much. 08:03.120 --> 08:06.270 And I'm going to see you in the next video lecture.