WEBVTT 00:00.380 --> 00:03.530 I will call you back again to another video lecture in PHP. 00:03.530 --> 00:08.960 And in this video lecture we go ahead and look at arrays in PHP. 00:16.280 --> 00:25.820 Oh, I saw arrays are very important in PHP development because it plays a vital role in collecting 00:25.850 --> 00:28.130 large number of information. 00:28.430 --> 00:37.310 Now we have on the screen you can see I have a different variables and I have first one player, one 00:37.310 --> 00:39.680 player, two, three, four and five. 00:39.710 --> 00:45.110 And now it is easy for me to go ahead and see equal. 00:45.140 --> 00:48.800 Let me say player one. 00:48.950 --> 00:55.670 And if I go ahead I'm going to get okay. 00:55.670 --> 00:58.880 So I have an error right in here. 00:58.910 --> 01:05.580 And that is says unexpected end of pi and In line nine. 01:05.610 --> 01:05.970 All right. 01:05.970 --> 01:08.040 So here I didn't close this. 01:08.040 --> 01:10.920 So this place is not closed. 01:10.950 --> 01:13.200 Now go ahead and check it out again. 01:13.200 --> 01:15.330 So I have a Ronaldo right in there. 01:15.720 --> 01:23.520 So what happens here is that if I want to create a variable and I'm creating different variables of 01:23.520 --> 01:26.310 a different players. 01:26.310 --> 01:28.530 And this is a collection of players. 01:28.530 --> 01:37.230 So it is easier for me to use an array and put everything in just one variable because array is descending 01:37.230 --> 01:38.370 as variables. 01:38.370 --> 01:45.750 But the difference between arrays and a specific individual variables is that each of this variable 01:45.780 --> 01:52.860 just collects one piece of information, it stores just one piece of information, which is just player 01:52.860 --> 01:53.760 one stars. 01:53.790 --> 01:54.420 Ronaldo. 01:54.450 --> 01:58.860 What if we should change this players to an array? 01:58.890 --> 02:03.270 We can be able to collect everything and we can actually access this. 02:03.270 --> 02:08.010 So if I want to access player three, I'll go ahead and echo. 02:08.460 --> 02:09.640 Uh, this is uh. 02:13.210 --> 02:14.860 Player four right? 02:14.890 --> 02:17.080 Player four and I forgot how to run this. 02:17.110 --> 02:19.660 We can see it now. 02:19.690 --> 02:25.300 I will go ahead and, uh, then go ahead and comment on this. 02:25.570 --> 02:25.990 All right. 02:26.020 --> 02:33.850 So I'll go ahead and comment on this, and, uh, I'll go ahead and remove this. 02:33.880 --> 02:36.010 Now, the echo has not run in there. 02:36.040 --> 02:37.720 What to create an array. 02:37.750 --> 02:43.000 Because an array helps us to collect multiple information. 02:43.000 --> 02:48.670 So it is a container that helps us to collect multiple information of the same elements. 02:48.670 --> 02:54.370 So the elements is going to be just the same let's say for players instead of creating different different 02:54.370 --> 03:01.180 players we go ahead and create just an array of players and everything is added. 03:01.180 --> 03:04.390 An array is going to be an element. 03:04.390 --> 03:10.960 So let's go ahead and create a variable called uh player. 03:10.960 --> 03:16.380 And uh let's this player go ahead and have an upgrade. 03:16.620 --> 03:17.070 All right. 03:17.100 --> 03:18.210 So I click on that. 03:18.210 --> 03:21.480 And now I shouldn't just go ahead and do that. 03:21.510 --> 03:23.400 Let me go ahead and say an array. 03:24.810 --> 03:25.410 All right. 03:25.410 --> 03:30.000 Now it's good to have an open and close parentheses and semicolon at the end. 03:30.030 --> 03:31.740 Now I'll go right in here. 03:31.770 --> 03:33.150 I'll take a Ronaldo. 03:33.330 --> 03:37.230 And that is the first element you're going to put in there. 03:37.260 --> 03:41.310 Now we'll go ahead and collect a messi. 03:41.310 --> 03:44.550 That is the second element right in there. 03:44.880 --> 03:52.590 Now we go over here I collect Mbappé and we go right in here and publicity. 03:52.620 --> 04:00.870 So the next one is a Ousmane and then we go ahead and put in there. 04:00.990 --> 04:03.510 Now the last one is Jorge. 04:03.540 --> 04:05.250 You know I'm also a player. 04:05.250 --> 04:08.940 So let's go ahead and put in there. 04:08.970 --> 04:11.340 Now we have collected all these. 04:11.340 --> 04:16.590 You will not ask me how can we be able to display this information? 04:16.590 --> 04:18.340 Permission is that ever possible? 04:18.340 --> 04:23.920 So using an array we are going to use what is called index. 04:24.160 --> 04:28.120 So now over here let's go ahead and say something. 04:28.150 --> 04:32.140 The very first one here Ronaldo is is index zero. 04:32.170 --> 04:36.010 The next one here is our Messi is index one. 04:36.010 --> 04:39.220 Then the next one here is going to be index two. 04:39.250 --> 04:42.700 Then the next one here is index three. 04:42.700 --> 04:45.400 And the last one here is index four. 04:45.430 --> 04:52.810 So whenever you are using an array whatever you have is an index inside of that array. 04:52.840 --> 04:56.470 So it starts from index zero and not one. 04:56.500 --> 05:00.460 So if I should call Ronaldo I should be calling index zero. 05:00.460 --> 05:03.220 And whatever that is there we print it out. 05:03.760 --> 05:11.230 Now let's go ahead and comment on this so that we don't run into an error when we run this code. 05:11.260 --> 05:15.640 Now let's go ahead and equal out player. 05:15.640 --> 05:18.370 And then we're going to use a bracket. 05:18.370 --> 05:21.410 And there if I want to assess, Missy. 05:21.440 --> 05:26.300 I'll go ahead and put a layer one that is index one. 05:26.330 --> 05:30.200 Now I'll go ahead and save this and let's check it out. 05:30.230 --> 05:32.870 So we have a fatal error. 05:32.870 --> 05:38.180 And that says of course undefined player. 05:38.180 --> 05:38.930 And. 05:41.480 --> 05:43.730 In line 17. 05:43.760 --> 05:48.890 And let's go over here and check out what is the problem. 05:48.890 --> 05:53.330 So this is player and this is player. 05:53.360 --> 05:58.040 So what happens is that we missed the dollar sign. 05:58.040 --> 06:00.680 So we missed the dollar sign in line 17. 06:00.680 --> 06:03.590 And let's go over here and refresh this again. 06:03.590 --> 06:06.140 So we have Missy right in here. 06:06.380 --> 06:13.880 So now always remember to put the dollar sign I sorry for missing out the dollar sign on this. 06:13.910 --> 06:17.270 Now let's go ahead and check out index zero. 06:17.270 --> 06:21.050 And then let's go ahead and check it out Coronado. 06:21.080 --> 06:23.600 And let's check out index four. 06:23.600 --> 06:26.280 And uh, let's go ahead and check it out. 06:26.280 --> 06:27.720 And that is George. 06:27.720 --> 06:34.680 So using the iris you can be able to collect so many elements. 06:34.680 --> 06:38.280 So whatever it is inside the array is an element. 06:38.880 --> 06:45.180 And you can access these elements using the index numbers starting from index zero. 06:45.210 --> 06:49.470 The very first element in an array is index zero. 06:50.370 --> 06:53.010 Now I cannot change this as well. 06:53.040 --> 06:54.180 Let me go ahead and see. 06:54.180 --> 06:56.640 I want to change index two. 06:56.670 --> 07:01.950 If I want to change index two, go ahead and remember to put the dollar sign when we say player. 07:01.950 --> 07:05.820 And uh let's go ahead and say index two. 07:05.850 --> 07:09.870 Now changes to any name. 07:09.870 --> 07:14.010 So which name are we going to put them in and say this is a seller. 07:14.100 --> 07:16.770 Now go ahead and press semicolon. 07:16.770 --> 07:22.530 And I've also printed out the index to go ahead and pass index two at the echo of the players and the 07:23.100 --> 07:23.640 refresh rate. 07:23.640 --> 07:24.270 Let's check it out. 07:24.270 --> 07:25.680 So that is seller. 07:26.160 --> 07:29.240 So you can be able to see you can change any name. 07:29.240 --> 07:33.770 You can be able to change any index in that way. 07:33.830 --> 07:36.410 So there are many things to do using an array. 07:36.410 --> 07:39.500 So as time goes on we go ahead and check out more on that. 07:39.500 --> 07:42.470 And we play around arrays. 07:42.590 --> 07:49.850 That is very interesting learning about array because without an array, if you want to collect a large 07:49.850 --> 07:56.060 elements of the same category, you will be creating different variables. 07:56.060 --> 07:59.360 And that that will make your code not to look very clean. 07:59.390 --> 07:59.990 All right. 07:59.990 --> 08:05.690 So with this which we just did right in here, you can be able to see that we created something so good. 08:05.690 --> 08:10.100 And it looks very nice and a very clean. 08:10.100 --> 08:13.430 So thanks to array for making it very simple for us. 08:13.430 --> 08:16.550 And I believe that you too. 08:16.580 --> 08:17.630 You love what you are seeing. 08:17.630 --> 08:19.700 So pull it down, play around with it. 08:19.700 --> 08:24.950 And if you have any question under this video lecture, please use the question and answer section and 08:24.950 --> 08:27.440 I'm going to get back to you as soon as possible. 08:27.470 --> 08:28.430 Thank you so much. 08:28.430 --> 08:32.120 And I'm going to see you in the next video lecture.