Difference between revisions of "PHP-and-MySQL/C2/Arrays/English-timed"
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| − | + | |'''Time''' | |
| − | + | |'''Narration''' | |
|- | |- | ||
| − | | | + | |00:00 |
|Hello and welcome to the tutorial on Arrays. | |Hello and welcome to the tutorial on Arrays. | ||
|- | |- | ||
| − | | | + | |00:03 |
|Arrays allow the user to store more than one piece of data inside a variable | |Arrays allow the user to store more than one piece of data inside a variable | ||
|- | |- | ||
| − | | | + | |00:08 |
|For example the variable days would be called as an array | |For example the variable days would be called as an array | ||
|- | |- | ||
| − | | | + | |00:12 |
|Inside a pair of parenthesis we're going to have more than one value | |Inside a pair of parenthesis we're going to have more than one value | ||
|- | |- | ||
| − | | | + | |00:17 |
|So, I'll pick 5 values for this and have every day of the week inside each of these. | |So, I'll pick 5 values for this and have every day of the week inside each of these. | ||
|- | |- | ||
| − | | | + | |00:23 |
|I'll have Monday, Tuesday, Wednesday, Thursday and Friday - just 5 days of the week, that saves us | |I'll have Monday, Tuesday, Wednesday, Thursday and Friday - just 5 days of the week, that saves us | ||
|- | |- | ||
| − | | | + | |00:39 |
|Say for example day one is Monday, day two is Tuesday and so on. | |Say for example day one is Monday, day two is Tuesday and so on. | ||
|- | |- | ||
| − | | | + | |00:49 |
|Hope you get the picture | |Hope you get the picture | ||
|- | |- | ||
| − | | | + | |00:50 |
|This is a much easier and more efficient way of calling a variable with more than one piece of data inside it | |This is a much easier and more efficient way of calling a variable with more than one piece of data inside it | ||
|- | |- | ||
| Line 33: | Line 33: | ||
|Please note these can also be numbers, or whatever data that you decide you require inside them. | |Please note these can also be numbers, or whatever data that you decide you require inside them. | ||
|- | |- | ||
| − | | | + | |01:07 |
|Now, to echo out our array, I'm going to say echo days | |Now, to echo out our array, I'm going to say echo days | ||
|- | |- | ||
| − | | | + | |01:12 |
|Now, you find that this doesn't work. | |Now, you find that this doesn't work. | ||
|- | |- | ||
| − | | | + | |01:16 |
|This happens when we open up our page | |This happens when we open up our page | ||
|- | |- | ||
| − | | | + | |01:20 |
|We just get 'Array' echoed out. | |We just get 'Array' echoed out. | ||
|- | |- | ||
| − | | | + | |01:22 |
|Now, 'Array' is not anywhere inside here. | |Now, 'Array' is not anywhere inside here. | ||
|- | |- | ||
| − | | | + | |01:24 |
|So, what PHP has done is echoed out the fact that what we have is an array. | |So, what PHP has done is echoed out the fact that what we have is an array. | ||
|- | |- | ||
| − | | | + | |01:32 |
|Now, to call a specific element inside an array, you might want to call it element, in some places they call it id tags or elements of an array. | |Now, to call a specific element inside an array, you might want to call it element, in some places they call it id tags or elements of an array. | ||
|- | |- | ||
| − | | | + | |01:41 |
|We're going to use square brackets and we'll call the position of the element inside the array. | |We're going to use square brackets and we'll call the position of the element inside the array. | ||
|- | |- | ||
| − | | | + | |01:45 |
|So, you may think this is one, two, three, four, five. | |So, you may think this is one, two, three, four, five. | ||
|- | |- | ||
| − | | | + | |01:50 |
|However because of the numbering system, the standard numbering system, we are starting with zero, one, two, three and four. | |However because of the numbering system, the standard numbering system, we are starting with zero, one, two, three and four. | ||
|- | |- | ||
| − | | | + | |01:58 |
|So, for example if I wanted to echo out Monday that would be zero, so, you put zero in that and you have Monday echoed out. | |So, for example if I wanted to echo out Monday that would be zero, so, you put zero in that and you have Monday echoed out. | ||
|- | |- | ||
| − | | | + | |02:09 |
|The same with one would be Tuesday and four, which is the last element of the array, would be Friday. | |The same with one would be Tuesday and four, which is the last element of the array, would be Friday. | ||
|- | |- | ||
| − | | | + | |02:18 |
|Okay, so, we're going to go ahead and I'm going to show you how to assign values in a different way into an array | |Okay, so, we're going to go ahead and I'm going to show you how to assign values in a different way into an array | ||
|- | |- | ||
| − | | | + | |02:26 |
|Now, let me start from the beginning of what I want to say. | |Now, let me start from the beginning of what I want to say. | ||
|- | |- | ||
| − | | | + | |02:32 |
|I'm going to create an array, but I'm going to create its specifically. | |I'm going to create an array, but I'm going to create its specifically. | ||
|- | |- | ||
| − | | | + | |02:39 |
|So, days zero equals Monday, days one equals Tuesday | |So, days zero equals Monday, days one equals Tuesday | ||
|- | |- | ||
| − | | | + | |02:53 |
|Now, you may think - what's the point of this? I mean, what I'm doing here essentially is creating what I said earlier would be a bit of a hassle. | |Now, you may think - what's the point of this? I mean, what I'm doing here essentially is creating what I said earlier would be a bit of a hassle. | ||
|- | |- | ||
| − | | | + | |03:04 |
|I mean I could say day 1 equals, you know and day 2 equals, and you could do it like that. | |I mean I could say day 1 equals, you know and day 2 equals, and you could do it like that. | ||
|- | |- | ||
| − | | | + | |03:15 |
|However, what we're still doing here is putting into an array. | |However, what we're still doing here is putting into an array. | ||
|- | |- | ||
| − | | | + | |03:19 |
|So, it may still contain the same structure but we're assigning it in a different way. | |So, it may still contain the same structure but we're assigning it in a different way. | ||
|- | |- | ||
| − | | | + | |03:25 |
|So you can do it like that.I always prefer to do it like this. | |So you can do it like that.I always prefer to do it like this. | ||
|- | |- | ||
| − | | | + | |03:33 |
|I find this much cleaner, much simpler and just to let you know - you can bring this down like this. | |I find this much cleaner, much simpler and just to let you know - you can bring this down like this. | ||
|- | |- | ||
| − | | | + | |03:45 |
|However if you prefer to view it, I mean if I save this now, refresh, nothing's changed. | |However if you prefer to view it, I mean if I save this now, refresh, nothing's changed. | ||
|- | |- | ||
| − | | | + | |03:54 |
|There are no errors, we still get the same structure, we've just moved it down on lines | |There are no errors, we still get the same structure, we've just moved it down on lines | ||
|- | |- | ||
| − | | | + | |04:01 |
|There's the line terminator at the end of your function and not at the end of every line, so, don't get confused with that. | |There's the line terminator at the end of your function and not at the end of every line, so, don't get confused with that. | ||
|- | |- | ||
| − | | | + | |04:11 |
|Okay, so, let's now go back to this. | |Okay, so, let's now go back to this. | ||
|- | |- | ||
| − | | | + | |04:15 |
|So, that's the basic array and how to create values for it in two different ways and how to call values for it. | |So, that's the basic array and how to create values for it in two different ways and how to call values for it. | ||
|- | |- | ||
| − | | | + | |04:23 |
|So, for example if I was saying echo Today is days and then I can say zero. | |So, for example if I was saying echo Today is days and then I can say zero. | ||
|- | |- | ||
| − | | | + | |04:34 |
|Now, you can see already that I've highlighted this in context - I've highlighted that in green | |Now, you can see already that I've highlighted this in context - I've highlighted that in green | ||
|- | |- | ||
| − | | | + | |04:41 |
|Now, if you refresh this, you'll see this is Monday. | |Now, if you refresh this, you'll see this is Monday. | ||
|- | |- | ||
| − | | | + | |04:44 |
|Now don't get confused, I do recommend you to use contexts. | |Now don't get confused, I do recommend you to use contexts. | ||
|- | |- | ||
| − | | | + | |04:48 |
|However, this isn't the standard way that contact recognizes the coding. | |However, this isn't the standard way that contact recognizes the coding. | ||
|- | |- | ||
| − | | | + | |04:53 |
|What it would look better is - you'll see that when we write it down here we could say echo 'days' and zero, you can see how that's in red to show an integer, a number. | |What it would look better is - you'll see that when we write it down here we could say echo 'days' and zero, you can see how that's in red to show an integer, a number. | ||
|- | |- | ||
| − | | | + | |05:09 |
|The way it would like you to write is, like that and we can see that's fine | |The way it would like you to write is, like that and we can see that's fine | ||
|- | |- | ||
| − | | | + | |05:16 |
|But you can incorporate an array into your string in order to echo it out. | |But you can incorporate an array into your string in order to echo it out. | ||
|- | |- | ||
| − | | | + | |05:23 |
|Anyway, I'm going to go on to associative arrays where we're going to assign id tags in a way where we hold a value for each sort of identity. | |Anyway, I'm going to go on to associative arrays where we're going to assign id tags in a way where we hold a value for each sort of identity. | ||
|- | |- | ||
| − | | | + | |05:36 |
|If you don't follow then this is the way I'm going to create it. | |If you don't follow then this is the way I'm going to create it. | ||
|- | |- | ||
| − | | | + | |05:46 |
|I'm going to say ages equals array, now inside, I'm going to say 'Alex' | |I'm going to say ages equals array, now inside, I'm going to say 'Alex' | ||
|- | |- | ||
| − | | | + | |06:03 |
|Now, instead of going on and saying Billy and then Kyle which are the three names I'm going to use, I'm going to say nineteen, fourteen and eighteen | |Now, instead of going on and saying Billy and then Kyle which are the three names I'm going to use, I'm going to say nineteen, fourteen and eighteen | ||
|- | |- | ||
| − | | | + | |06:20 |
|Basically using equals and a greater than sign. | |Basically using equals and a greater than sign. | ||
|- | |- | ||
| − | | | + | |06:24 |
|Now, what this has done is instead of our array elements as in this being called by zero, this being called by one, this being called by two. | |Now, what this has done is instead of our array elements as in this being called by zero, this being called by one, this being called by two. | ||
|- | |- | ||
| − | | | + | |06:34 |
|This is now called as 'Alex', this is called as 'Billy' and this is called as 'Kyle' but their values are fourteen, nineteen and eighteen. | |This is now called as 'Alex', this is called as 'Billy' and this is called as 'Kyle' but their values are fourteen, nineteen and eighteen. | ||
|- | |- | ||
| − | | | + | |06:45 |
|So, really, it would be the same as writing that. Lets get rid of that and calling this as zero, one and two. | |So, really, it would be the same as writing that. Lets get rid of that and calling this as zero, one and two. | ||
|- | |- | ||
| − | | | + | |06:55 |
|And to make it a bit more friendly, and a bit easier to remember, a bit easier to call, we can now say, echo out 'ages', 'Alex', like that. | |And to make it a bit more friendly, and a bit easier to remember, a bit easier to call, we can now say, echo out 'ages', 'Alex', like that. | ||
|- | |- | ||
| − | | | + | |07:09 |
|So, this will echo out nineteen, as we refresh and see there - nineteen. The same if you do it with 'Billy' and the same with 'Kyle'. | |So, this will echo out nineteen, as we refresh and see there - nineteen. The same if you do it with 'Billy' and the same with 'Kyle'. | ||
|- | |- | ||
| − | | | + | |07:24 |
|So, when you're half way through a program and instead of saying aah I'll have to go back to the top and count along each row and say "Is this zero, one, two or three I can't remember?" | |So, when you're half way through a program and instead of saying aah I'll have to go back to the top and count along each row and say "Is this zero, one, two or three I can't remember?" | ||
|- | |- | ||
| − | | | + | |07:38 |
|This is much easier to do. Another useful way of doing this is, if I was to say array one is equal to 'Alex' and then two is equal to 'Billy'. | |This is much easier to do. Another useful way of doing this is, if I was to say array one is equal to 'Alex' and then two is equal to 'Billy'. | ||
|- | |- | ||
| − | | | + | |07:50 |
|We are not starting at zero and then one. We're starting at one and two, so that we find that is easier to remember. | |We are not starting at zero and then one. We're starting at one and two, so that we find that is easier to remember. | ||
|- | |- | ||
| − | | | + | |08:00 |
|Now, we can now say echo, 'ages' one, that comes out as 'Alex'. | |Now, we can now say echo, 'ages' one, that comes out as 'Alex'. | ||
|- | |- | ||
| − | | | + | |08:08 |
|We're not using zero for that, it's a lot more user friendly for you to program than to say, zero, one, two. | |We're not using zero for that, it's a lot more user friendly for you to program than to say, zero, one, two. | ||
|- | |- | ||
| − | | | + | |08:17 |
|Try it out - work around it - see what's easiest for you. | |Try it out - work around it - see what's easiest for you. | ||
|- | |- | ||
| − | | | + | |08:21 |
|But I mean this to me is quite pointless because I'm in the mood of using zero, one, two. | |But I mean this to me is quite pointless because I'm in the mood of using zero, one, two. | ||
|- | |- | ||
| − | | | + | |08:28 |
|But if you want to use it like I have before or like this or assign a string value to any data types then that's the way to do it | |But if you want to use it like I have before or like this or assign a string value to any data types then that's the way to do it | ||
|- | |- | ||
| − | | | + | |08:37 |
|Okay, that's the basics of arrays, I have another tutorial on multidimensional arrays. | |Okay, that's the basics of arrays, I have another tutorial on multidimensional arrays. | ||
|- | |- | ||
| − | | | + | |08:44 |
|Its a separate tutorial. Please watch it. | |Its a separate tutorial. Please watch it. | ||
|- | |- | ||
| − | | | + | |08:47 |
|That's all in this tutorial. Thanks for watching. This is Arvind dubbing for the Spoken Tutorial project. Bye. | |That's all in this tutorial. Thanks for watching. This is Arvind dubbing for the Spoken Tutorial project. Bye. | ||
Revision as of 11:12, 10 July 2014
| Time | Narration |
| 00:00 | Hello and welcome to the tutorial on Arrays. |
| 00:03 | Arrays allow the user to store more than one piece of data inside a variable |
| 00:08 | For example the variable days would be called as an array |
| 00:12 | Inside a pair of parenthesis we're going to have more than one value |
| 00:17 | So, I'll pick 5 values for this and have every day of the week inside each of these. |
| 00:23 | I'll have Monday, Tuesday, Wednesday, Thursday and Friday - just 5 days of the week, that saves us |
| 00:39 | Say for example day one is Monday, day two is Tuesday and so on. |
| 00:49 | Hope you get the picture |
| 00:50 | This is a much easier and more efficient way of calling a variable with more than one piece of data inside it |
| 00:59 | Please note these can also be numbers, or whatever data that you decide you require inside them. |
| 01:07 | Now, to echo out our array, I'm going to say echo days |
| 01:12 | Now, you find that this doesn't work. |
| 01:16 | This happens when we open up our page |
| 01:20 | We just get 'Array' echoed out. |
| 01:22 | Now, 'Array' is not anywhere inside here. |
| 01:24 | So, what PHP has done is echoed out the fact that what we have is an array. |
| 01:32 | Now, to call a specific element inside an array, you might want to call it element, in some places they call it id tags or elements of an array. |
| 01:41 | We're going to use square brackets and we'll call the position of the element inside the array. |
| 01:45 | So, you may think this is one, two, three, four, five. |
| 01:50 | However because of the numbering system, the standard numbering system, we are starting with zero, one, two, three and four. |
| 01:58 | So, for example if I wanted to echo out Monday that would be zero, so, you put zero in that and you have Monday echoed out. |
| 02:09 | The same with one would be Tuesday and four, which is the last element of the array, would be Friday. |
| 02:18 | Okay, so, we're going to go ahead and I'm going to show you how to assign values in a different way into an array |
| 02:26 | Now, let me start from the beginning of what I want to say. |
| 02:32 | I'm going to create an array, but I'm going to create its specifically. |
| 02:39 | So, days zero equals Monday, days one equals Tuesday |
| 02:53 | Now, you may think - what's the point of this? I mean, what I'm doing here essentially is creating what I said earlier would be a bit of a hassle. |
| 03:04 | I mean I could say day 1 equals, you know and day 2 equals, and you could do it like that. |
| 03:15 | However, what we're still doing here is putting into an array. |
| 03:19 | So, it may still contain the same structure but we're assigning it in a different way. |
| 03:25 | So you can do it like that.I always prefer to do it like this. |
| 03:33 | I find this much cleaner, much simpler and just to let you know - you can bring this down like this. |
| 03:45 | However if you prefer to view it, I mean if I save this now, refresh, nothing's changed. |
| 03:54 | There are no errors, we still get the same structure, we've just moved it down on lines |
| 04:01 | There's the line terminator at the end of your function and not at the end of every line, so, don't get confused with that. |
| 04:11 | Okay, so, let's now go back to this. |
| 04:15 | So, that's the basic array and how to create values for it in two different ways and how to call values for it. |
| 04:23 | So, for example if I was saying echo Today is days and then I can say zero. |
| 04:34 | Now, you can see already that I've highlighted this in context - I've highlighted that in green |
| 04:41 | Now, if you refresh this, you'll see this is Monday. |
| 04:44 | Now don't get confused, I do recommend you to use contexts. |
| 04:48 | However, this isn't the standard way that contact recognizes the coding. |
| 04:53 | What it would look better is - you'll see that when we write it down here we could say echo 'days' and zero, you can see how that's in red to show an integer, a number. |
| 05:09 | The way it would like you to write is, like that and we can see that's fine |
| 05:16 | But you can incorporate an array into your string in order to echo it out. |
| 05:23 | Anyway, I'm going to go on to associative arrays where we're going to assign id tags in a way where we hold a value for each sort of identity. |
| 05:36 | If you don't follow then this is the way I'm going to create it. |
| 05:46 | I'm going to say ages equals array, now inside, I'm going to say 'Alex' |
| 06:03 | Now, instead of going on and saying Billy and then Kyle which are the three names I'm going to use, I'm going to say nineteen, fourteen and eighteen |
| 06:20 | Basically using equals and a greater than sign. |
| 06:24 | Now, what this has done is instead of our array elements as in this being called by zero, this being called by one, this being called by two. |
| 06:34 | This is now called as 'Alex', this is called as 'Billy' and this is called as 'Kyle' but their values are fourteen, nineteen and eighteen. |
| 06:45 | So, really, it would be the same as writing that. Lets get rid of that and calling this as zero, one and two. |
| 06:55 | And to make it a bit more friendly, and a bit easier to remember, a bit easier to call, we can now say, echo out 'ages', 'Alex', like that. |
| 07:09 | So, this will echo out nineteen, as we refresh and see there - nineteen. The same if you do it with 'Billy' and the same with 'Kyle'. |
| 07:24 | So, when you're half way through a program and instead of saying aah I'll have to go back to the top and count along each row and say "Is this zero, one, two or three I can't remember?" |
| 07:38 | This is much easier to do. Another useful way of doing this is, if I was to say array one is equal to 'Alex' and then two is equal to 'Billy'. |
| 07:50 | We are not starting at zero and then one. We're starting at one and two, so that we find that is easier to remember. |
| 08:00 | Now, we can now say echo, 'ages' one, that comes out as 'Alex'. |
| 08:08 | We're not using zero for that, it's a lot more user friendly for you to program than to say, zero, one, two. |
| 08:17 | Try it out - work around it - see what's easiest for you. |
| 08:21 | But I mean this to me is quite pointless because I'm in the mood of using zero, one, two. |
| 08:28 | But if you want to use it like I have before or like this or assign a string value to any data types then that's the way to do it |
| 08:37 | Okay, that's the basics of arrays, I have another tutorial on multidimensional arrays. |
| 08:44 | Its a separate tutorial. Please watch it. |
| 08:47 | That's all in this tutorial. Thanks for watching. This is Arvind dubbing for the Spoken Tutorial project. Bye. |
