WEBVTT 00:00.890 --> 00:05.810 In this lecture, I'll go ahead and teach you how to make some calculations from the user input. 00:12.470 --> 00:12.830 All right. 00:12.860 --> 00:18.440 So in a previous lecture we were able to create a form and were able to input a user name and age. 00:18.440 --> 00:20.450 And you can see how to collect those forms. 00:20.480 --> 00:23.570 Now let's go ahead and create another form right in here. 00:23.720 --> 00:28.940 So I'll go ahead and say form and I'll go ahead and close this form. 00:29.420 --> 00:30.260 All right. 00:31.340 --> 00:34.040 So let's go ahead and close the form. 00:34.040 --> 00:38.840 And now we just go ahead and do exactly just what we did given an action. 00:38.840 --> 00:41.810 And that is site dot PHP. 00:41.960 --> 00:49.160 And that method just be the same again add a get method because we want to get some input from a user. 00:49.190 --> 00:55.670 I will do some calculations to see how it works in order to help us to understand how PHP works. 00:55.670 --> 00:59.600 Now I will go ahead and give you a prompt because you have talked about prompt. 00:59.630 --> 01:01.010 Let me say this is number one. 01:01.010 --> 01:07.040 And then we go ahead and let me go ahead and put two so that we can be able to say let me say Missy, 01:07.070 --> 01:09.080 Num1 and Num2. 01:09.110 --> 01:15.350 So we go ahead and give some input to this. 01:15.350 --> 01:18.740 So for Num1, I'm going to create an input tag for Num2. 01:18.770 --> 01:20.780 I'm going to print an input tag. 01:20.780 --> 01:24.050 So now I'll go ahead and say you can create many. 01:24.050 --> 01:27.950 Maybe you want to collect two or 3 or 5 uh inputs. 01:27.950 --> 01:28.910 That is no problem. 01:28.940 --> 01:29.420 All right. 01:29.420 --> 01:35.000 So this is just to help us to play around with PHP and the type is number. 01:35.000 --> 01:39.170 And because, oh, I click on this let me say a number. 01:39.170 --> 01:46.730 And let's go ahead and give it a name and let the name be my known Ricky. 01:46.760 --> 01:48.440 Let me say this is my number one. 01:48.470 --> 01:48.980 All right. 01:49.010 --> 01:50.180 Go ahead and close this. 01:50.180 --> 01:58.700 And then for the second one I'll go ahead and say inputs and let it type of inputs be equal to number 01:58.730 --> 01:59.480 again. 01:59.480 --> 02:06.140 And the lady name be equal to my number two. 02:06.320 --> 02:07.940 And go ahead and close this. 02:07.940 --> 02:13.490 So we have been able to create inputs form for Num1 and Num2. 02:13.490 --> 02:13.490 two. 02:13.520 --> 02:17.240 So what remains right now is to go ahead and create a submit button. 02:17.240 --> 02:25.880 So the input stack for this let's go ahead and set type is going to be submit. 02:25.910 --> 02:27.200 Go ahead and close this. 02:27.200 --> 02:31.130 And if we refresh this we have Num1 and Num2. 02:31.160 --> 02:34.400 So I'm inputting text and I'm clicking on my keyboard. 02:34.400 --> 02:37.580 And then nothing is being done because it's just a number. 02:37.580 --> 02:43.880 But if I go ahead and put numbers 123456, seven, eight, nine and the computer set only inputs, let 02:43.880 --> 02:45.770 me say I have a two. 02:45.770 --> 02:47.750 And down here I have four. 02:47.750 --> 02:50.660 And if I submit these I have nothing have been done. 02:50.660 --> 02:56.270 So I need to go over to my PHP right in here and be able to execute this. 02:56.270 --> 03:03.710 So let me go ahead and say for the first one I'll go ahead and give it a create a variable called my, 03:04.490 --> 03:06.260 let me say my number one. 03:06.260 --> 03:12.680 And now go ahead and create another variable down here and I'll call that my number two. 03:12.830 --> 03:13.310 All right. 03:13.310 --> 03:20.320 So for number one I'll go ahead and say this is equal to dollar underscore gates. 03:20.320 --> 03:24.400 So give me anything that is inside the form number one. 03:24.430 --> 03:25.000 All right. 03:25.000 --> 03:28.930 So I'm going to get whatever it is inside here. 03:28.930 --> 03:30.100 So I'm going to copy this. 03:30.100 --> 03:33.130 And I'll go ahead and paste that right in here. 03:33.160 --> 03:33.850 All right. 03:33.850 --> 03:38.230 So and this is equal to the second one which is number two. 03:38.410 --> 03:42.670 Go ahead and move this a little bit so it can be awkward can look clean. 03:42.670 --> 03:48.850 And then go ahead and copy what is right in here and put in there. 03:48.880 --> 03:49.420 All right. 03:49.420 --> 03:56.860 So this is just a variable name I can say that this is my or number one or number two. 03:58.270 --> 04:02.320 So let me see I don't want this name to just be the same thing here. 04:02.350 --> 04:04.690 So can we want to know what we are doing. 04:04.690 --> 04:07.300 So let me say this is a number one. 04:07.330 --> 04:08.170 All right. 04:08.170 --> 04:11.260 And this is a number two. 04:11.290 --> 04:17.080 The reason why I'm differentiating this is that you don't think that the name must be the same. 04:17.080 --> 04:20.170 No, no, this is just a variable name okay. 04:20.200 --> 04:24.400 Now our goal right here and equal out whatever we have. 04:24.400 --> 04:27.490 So equal Outs. 04:27.790 --> 04:29.020 These. 04:31.030 --> 04:31.570 Echo outs. 04:31.600 --> 04:34.840 I'm going to make this to be in a lower case. 04:34.840 --> 04:37.450 So it's always really good as a variable. 04:37.450 --> 04:40.180 So this is a nice one. 04:40.180 --> 04:41.920 We can actually make that to be upper case. 04:41.950 --> 04:42.760 There's no problem. 04:42.760 --> 04:44.740 I just want my code to look good. 04:44.740 --> 04:50.380 So number one plus. 04:52.540 --> 04:54.280 Number two. 04:54.400 --> 04:54.910 All right. 04:54.910 --> 04:57.880 So I just cut out this I will go ahead and save this. 04:57.910 --> 04:59.710 Let's go ahead and refresh this and check it out. 04:59.710 --> 05:07.510 And it says number two under unexpected variable number two in this and line 15. 05:07.510 --> 05:12.670 So what actually happens here is we didn't put a semicolon at the end of all this. 05:12.670 --> 05:14.650 So we had a semicolon at the end of this. 05:14.680 --> 05:15.730 And save this again. 05:15.760 --> 05:16.930 Go ahead and refresh this. 05:16.930 --> 05:19.120 And now we have this. 05:19.120 --> 05:21.100 So I'll go ahead on that. 05:21.130 --> 05:25.720 Clean out all this guy and say three and two submit. 05:25.720 --> 05:27.670 We have five down here. 05:28.090 --> 05:28.630 All right. 05:28.660 --> 05:34.300 Now anything we input the NMC seven plus it will go ahead and submit. 05:34.330 --> 05:35.350 We have kicked in. 05:35.350 --> 05:42.460 So go ahead and change this to like a minus inside here and always save your code. 05:42.490 --> 05:48.250 Go back here and save four and two okay four and three so it can be significant. 05:48.280 --> 05:49.660 Go ahead and hit. 05:49.780 --> 05:52.030 That is equal to one. 05:52.840 --> 06:01.360 So our if we say ten minus seven and submit that is three, it can actually go ahead and make a modification 06:01.360 --> 06:07.180 and go ahead and say this to be two multiply eight. 06:07.180 --> 06:09.430 And this is equal to 16. 06:09.580 --> 06:12.970 So in that way you can allow users to input numbers. 06:12.970 --> 06:20.680 And you go ahead and uh from the back end you execute the program maybe multiplication, division, 06:20.920 --> 06:24.730 uh, I mean minus plus and so on. 06:24.730 --> 06:27.220 So I hope you can be able to play around with this. 06:27.220 --> 06:32.320 And, uh, in case you have have any question on this, please use the question and answer section. 06:32.320 --> 06:35.230 And I'm going to get back to you as soon as possible. 06:35.260 --> 06:36.280 Thank you so much. 06:36.280 --> 06:39.640 And I'm going to see you in the next video lecture.