WEBVTT 00:00.560 --> 00:04.040 I will call you back again to another video lecture in PHP. 00:04.040 --> 00:09.860 And in this video lecture I'll go ahead and tell you about for loop in PHP. 00:16.790 --> 00:17.210 All right. 00:17.210 --> 00:21.410 So we looked at a while loop and we have dealt with a do while loop. 00:21.440 --> 00:23.810 Now let's go ahead and look at for loop. 00:23.840 --> 00:32.180 So for loop is another loop system you can use to iterate through uh information in PHP. 00:32.420 --> 00:36.920 So your program you can always use for loop or use while loop or do while loop. 00:36.920 --> 00:38.240 Now let's go ahead and see. 00:38.240 --> 00:40.520 This is a for loop. 00:40.520 --> 00:45.680 And uh anything inside here is what I'm going to generate. 00:45.860 --> 00:49.880 So now let's go ahead and say I have this while loop right in here. 00:49.880 --> 00:53.330 And that you ask me why didn't I delete this while loop? 00:53.480 --> 01:00.170 The reason why I left this while loop till now is because I want to use that to teach us about for loop, 01:00.320 --> 01:04.610 because while loop is the same thing with for loop. 01:04.700 --> 01:08.030 But if you are a beginner, you will be like why? 01:08.060 --> 01:09.170 What is going on? 01:09.170 --> 01:14.540 So just the same way and the same information, everything right in here is what we are going to use 01:14.540 --> 01:17.810 to generate whatever we have at the output. 01:18.290 --> 01:23.540 So in for loop we are going to write everything within the for loop system. 01:23.540 --> 01:28.940 Then you go ahead and execute the program inside the for loop. 01:29.390 --> 01:30.650 Now let's go ahead and see. 01:30.650 --> 01:33.680 The very first thing we have here is the gradient variable. 01:33.680 --> 01:36.230 And that is the first thing you do inside the for loop. 01:36.260 --> 01:40.250 Go ahead and declare I want to say num equal to one. 01:40.310 --> 01:42.770 You see that num equal to one. 01:42.770 --> 01:49.070 And then you give the condition we set y null is less than or equal to ten. 01:49.070 --> 01:50.450 So that is the next condition. 01:50.450 --> 01:55.040 So the next thing after the condition in for loop is setting a condition. 01:55.040 --> 01:57.950 And then you can have a semicolon at the end. 01:57.980 --> 02:06.620 Because we have one more thing to go and that the next is setting that condition and the you go ahead 02:06.620 --> 02:07.490 and give it a target. 02:07.490 --> 02:10.760 So the target is that it's going to increment one here. 02:10.760 --> 02:13.790 You're going to remove the semicolon at the end. 02:13.790 --> 02:17.600 So just the sentence we have right in here declaring the variable. 02:17.600 --> 02:25.370 Then set your conditions and uh giving it uh the target. 02:25.370 --> 02:29.120 And that is you want this to always increment. 02:29.420 --> 02:32.120 Always wanted to also decrement you. 02:32.120 --> 02:35.390 And then now we go ahead and print out Norm. 02:35.420 --> 02:38.570 I'll go ahead and copy this and put it right inside the for loop. 02:38.570 --> 02:42.080 So now I want to delete the while loop. 02:42.110 --> 02:42.920 And we have here. 02:42.950 --> 02:45.380 Now let's go ahead and run this code and check it out. 02:45.380 --> 02:48.680 So you see I run this code and I got exactly the same thing. 02:48.680 --> 02:52.790 So if I go ahead and check this to change it to seven I'll run this code. 02:52.820 --> 02:55.460 You can see I have 127. 02:55.610 --> 03:00.140 So you can see that what we have is just exactly the same thing. 03:00.170 --> 03:04.910 So for loop makes it so we clean easier and straightforward. 03:04.910 --> 03:13.130 So that is why for loop is more preferable to so many people out there than other loop systems, but 03:13.130 --> 03:14.510 none is better than the other. 03:14.540 --> 03:16.610 You can actually use any one of your choice. 03:16.790 --> 03:17.330 All right. 03:17.330 --> 03:25.100 So let's go ahead and use this for loop to actually do some practices in PHP. 03:25.220 --> 03:27.920 Let's go ahead and say we have this variable. 03:27.920 --> 03:32.300 Or for goals settings and goals scored by different players. 03:32.330 --> 03:32.930 All right. 03:32.960 --> 03:35.420 Now we're going to do is to check an array. 03:35.450 --> 03:39.440 So we're going to create an array of these goals by different players. 03:39.470 --> 03:41.930 Let's say the first one score 95 03:43.910 --> 03:49.250 2015 and 40 goals. 03:49.790 --> 03:53.570 So we have this 12345 and six. 03:53.780 --> 03:56.240 Our goal is to also be up to seven. 03:56.430 --> 03:57.600 So let me see. 03:57.600 --> 03:59.640 The next one is going to be dating goals. 03:59.730 --> 04:01.620 Alright, now if I save this. 04:01.620 --> 04:03.240 So this is an array of numbers. 04:03.270 --> 04:05.430 Go ahead and place a semicolon at the end of this. 04:05.430 --> 04:08.070 And we want to generate this array. 04:08.100 --> 04:10.110 Want to print out these. 04:10.110 --> 04:12.720 So how do we print this out. 04:12.720 --> 04:20.520 So what we need to do right here is instead of all saying we have set this starting from one okay. 04:20.550 --> 04:24.390 Now what we need is to set it to start from zero. 04:24.390 --> 04:29.310 Because if you remember the time I taught you about array, I told you that the very first number here 04:29.340 --> 04:32.070 is index zero okay. 04:32.100 --> 04:34.200 And next one is index one. 04:34.200 --> 04:36.810 And the next one is index two. 04:36.990 --> 04:43.410 Uh index three, index four, index five and index six. 04:43.410 --> 04:45.780 So let's go here to comments on this. 04:45.780 --> 04:50.370 So that uh, we are not going to run into an error when we print that out. 04:51.840 --> 04:52.080 All right. 04:52.110 --> 04:53.910 Now I want to show you this. 04:53.910 --> 04:56.760 And uh, we want to me start from index zero. 04:56.760 --> 04:59.940 That means none is going to start from zero and not one. 04:59.970 --> 05:00.570 Okay. 05:00.600 --> 05:14.430 And then we are going to now print out the same none less than or equal to the array the variable name. 05:14.430 --> 05:16.050 So the variable here is go. 05:16.080 --> 05:16.620 Okay. 05:16.650 --> 05:18.630 So you can actually copy this. 05:18.630 --> 05:21.570 So that is what we are going to give the conditions. 05:21.570 --> 05:25.410 So say this is counts. 05:27.720 --> 05:30.540 So counts goes. 05:30.930 --> 05:31.380 All right. 05:31.410 --> 05:33.210 That is only going to print out. 05:33.360 --> 05:34.740 And they're all good. 05:35.010 --> 05:40.800 So we don't just echo the none we call the variable I. 05:40.800 --> 05:43.080 We're going to insert the num right inside the variable. 05:43.080 --> 05:44.490 So go ahead and say echo. 05:44.490 --> 05:48.420 And then we're going to be index of the nome. 05:50.070 --> 05:54.330 So the index of the nome is what we're going to insert right in there. 05:54.330 --> 05:59.760 Because if we put the index 10123, it's going to print just one. 05:59.760 --> 06:01.680 But we want everything to be printed out. 06:01.710 --> 06:14.010 Now if we go ahead and run this and we say we have an error at a line 12 and it says undefined array 06:14.040 --> 06:15.450 key seven. 06:15.450 --> 06:19.440 So this is not an error right in there. 06:19.680 --> 06:22.170 It's a go ahead and refresh this. 06:24.930 --> 06:27.960 And uh there is no error there. 06:29.100 --> 06:29.940 Only swirl. 06:29.940 --> 06:32.760 And uh that is it. 06:32.970 --> 06:35.970 Now if we go ahead and uh, say. 06:38.310 --> 06:43.890 Let's say we want to print this less than the number, we can go ahead and refresh this. 06:43.890 --> 06:45.870 And, uh, that is off. 06:45.870 --> 06:53.370 So what happened right here is I said that this starts from zero, and then num should be less than 06:53.370 --> 06:54.090 Down count. 06:54.090 --> 06:57.450 That means is going to print from 0 to 13. 06:57.570 --> 06:58.140 All right. 06:58.140 --> 07:03.330 So we remove less than or equal to because this is not number. 07:03.330 --> 07:06.000 It was actually given a count. 07:06.000 --> 07:09.450 And that is why it was giving us an error right in there. 07:09.450 --> 07:13.260 So now we removed less than or equal sign. 07:13.290 --> 07:16.200 So it's going to just be less than sign okay. 07:16.230 --> 07:19.350 So we can actually print from 9 to 18. 07:19.350 --> 07:26.580 So if I take this to maybe if I want 67 uh, 23 I refresh this. 07:26.610 --> 07:28.320 We can actually print that out. 07:28.350 --> 07:29.400 You can see that. 07:29.430 --> 07:32.700 So that is it adding is very interesting. 07:32.700 --> 07:37.470 You can use this whole loop to iterate through, uh, arrays of numbers. 07:37.470 --> 07:38.970 And that is very good. 07:38.970 --> 07:40.410 So why not practice with that. 07:40.410 --> 07:42.270 Check it out and play around it. 07:42.270 --> 07:46.770 And if you have any questions, go ahead and use the question and answer section. 07:46.770 --> 07:49.500 And I'm going to get back to you as soon as possible. 07:49.530 --> 07:50.430 Thank you so much. 07:50.430 --> 07:53.520 And I'm going to see you in the next video lecture.