PHP-and-MySQL/C2/Arrays/English-timed - Revision history

Sandhya.np14 at 15:25, 15 December 2018

2018-12-15T15:25:13Z

PoojaMoolya at 09:47, 24 March 2017

2017-03-24T09:47:29Z

Sandhya.np14 at 09:29, 20 May 2015

2015-05-20T09:29:26Z

Sandhya.np14 at 07:02, 20 May 2015

2015-05-20T07:02:53Z

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Pratik kamble at 05:42, 10 July 2014

2014-07-10T05:42:22Z

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Minal: Created page with '{|Border=1 !Time !Narration |- |0:00 |Hello and welcome to the tutorial on Arrays. |- |0:03 |Arrays allow the user to store more than one piece of data inside a variable |- |0:0…'

2013-01-02T10:23:34Z

Created page with '{|Border=1 !Time !Narration |- |0:00 |Hello and welcome to the tutorial on Arrays. |- |0:03 |Arrays allow the user to store more than one piece of data inside a variable |- |0:0…'

New page

{|Border=1
!Time
!Narration
|-
|0:00
|Hello and welcome to the tutorial on Arrays.
|-
|0:03
|Arrays allow the user to store more than one piece of data inside a variable
|-
|0:08
|For example the variable days would be called as an array
|-
|0:12
|Inside a pair of parenthesis we're going to have more than one value
|-
|0:17
|So, I'll pick 5 values for this and have every day of the week inside each of these.
|-
|0:23
|I'll have Monday, Tuesday, Wednesday, Thursday and Friday - just 5 days of the week, that saves us
|-
|0:39
|Say for example day one is Monday, day two is Tuesday and so on.
|-
|0:49
|Hope you get the picture
|-
|0:50
|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.
|-
|1:07
|Now, to echo out our array, I'm going to say echo days
|-
|1:12
|Now, you find that this doesn't work.
|-
|1:16
|This happens when we open up our page
|-
|1:20
|We just get 'Array' echoed out.
|-
|1:22
|Now, 'Array' is not anywhere inside here.
|-
|1:24
|So, what PHP has done is echoed out the fact that what we have is an array.
|-
|1:32
|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.
|-
|1:41
|We're going to use square brackets and we'll call the position of the element inside the array.
|-
|1:45
|So, you may think this is one, two, three, four, five.
|-
|1:50
|However because of the numbering system, the standard numbering system, we are starting with zero, one, two, three and four.
|-
|1:58
|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.
|-
|2:09
|The same with one would be Tuesday and four, which is the last element of the array, would be Friday.
|-
|2:18
|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
|-
|2:26
|Now, let me start from the beginning of what I want to say.
|-
|2:32
|I'm going to create an array, but I'm going to create its specifically.
|-
|2:39
|So, days zero equals Monday, days one equals Tuesday
|-
|2:53
|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.
|-
|3:04
|I mean I could say day 1 equals, you know and day 2 equals, and you could do it like that.
|-
|3:15
|However, what we're still doing here is putting into an array.
|-
|3:19
|So, it may still contain the same structure but we're assigning it in a different way.
|-
|3:25
|So you can do it like that.I always prefer to do it like this.
|-
|3:33
|I find this much cleaner, much simpler and just to let you know - you can bring this down like this.
|-
|3:45
|However if you prefer to view it, I mean if I save this now, refresh, nothing's changed.
|-
|3:54
|There are no errors, we still get the same structure, we've just moved it down on lines
|-
|4:01
|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.
|-
|4:11
|Okay, so, let's now go back to this.
|-
|4:15
|So, that's the basic array and how to create values for it in two different ways and how to call values for it.
|-
|4:23
|So, for example if I was saying echo Today is days and then I can say zero.
|-
|4:34
|Now, you can see already that I've highlighted this in context - I've highlighted that in green
|-
|4:41
|Now, if you refresh this, you'll see this is Monday.
|-
|4:44
|Now don't get confused, I do recommend you to use contexts.
|-
|4:48
|However, this isn't the standard way that contact recognizes the coding.
|-
|4:53
|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.
|-
|5:09
|The way it would like you to write is, like that and we can see that's fine
|-
|5:16
|But you can incorporate an array into your string in order to echo it out.
|-
|5:23
|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.
|-
|5:36
|If you don't follow then this is the way I'm going to create it.
|-
|5:46
|I'm going to say ages equals array, now inside, I'm going to say 'Alex'
|-
|6:03
|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
|-
|6:20
|Basically using equals and a greater than sign.
|-
|6:24
|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.
|-
|6:34
|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.
|-
|6:45
|So, really, it would be the same as writing that. Lets get rid of that and calling this as zero, one and two.
|-
|6:55
|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.
|-
|7:09
|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'.
|-
|7:24
|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?"
|-
|7:38
|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'.
|-
|7:50
|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.
|-
|8:00
|Now, we can now say echo, 'ages' one, that comes out as 'Alex'.
|-
|8:08
|We're not using zero for that, it's a lot more user friendly for you to program than to say, zero, one, two.
|-
|8:17
|Try it out - work around it - see what's easiest for you.
|-
|8:21
|But I mean this to me is quite pointless because I'm in the mood of using zero, one, two.
|-
|8:28
|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
|-
|8:37
|Okay, that's the basics of arrays, I have another tutorial on multidimensional arrays.
|-
|8:44
|Its a separate tutorial. Please watch it.
|-
|8:47
|That's all in this tutorial. Thanks for watching. This is Arvind dubbing for the Spoken Tutorial project. Bye.

@@ Line 19: / Line 19: @@
 |-
 |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 ($day1) is Monday, day two is Tuesday and so on.
+|Say for example, day one ($day1) is '''Monday''', day two is '''Tuesday''' and so on.
 |-
 |00:49
-|Hope you get the picture.This is a much easier and more efficient way of calling a variable with more than one piece of data inside it.
+|Hope you get the picture. This is a much easier and more efficient way of calling a variable with more than one piece of data inside it.
 |-
 |00:59
@@ Line 31: / Line 31: @@
 |-
 |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 $days'''.
 |-
 |01:12
@@ Line 37: / Line 37: @@
 |-
 |01:16
-|This happens when we open up our page.
+|This happens when we open up our '''page'''.
 |-
 |01:20
-|We just get "Array" echoed out.
+|We just get "Array" '''echo'''ed out.
 |-
 |01:22
@@ Line 46: / Line 46: @@
 |-
 |01:24
-|So, what '''PHP''' has done is echoed out the fact that what we have is an array.
+|So, what '''PHP''' has done is, echoed out the fact that what we have is an array.
 |-
 |01:32
@@ Line 61: / Line 61: @@
 |-
 |01:58
-|So for example, if I wanted to '''echo''' out Monday that would be zero; so, you put zero in that and you have Monday echoed out.
+|So, for example, if I wanted to '''echo''' out '''Monday''' that would be zero; so, you put zero in that and you have '''Monday''' echoed out.
 |-
 |02:09
-|The same with one would be Tuesday and four which is the last element of the array would be Friday.
+|The same with one would be '''Tuesday''' and four which is the last element of the array would be Friday.
 |-
 |02:18
@@ Line 76: / Line 76: @@
 |-
 |02:39
-|So, '''$days''' zero equals Monday, '''days''' one equals Tuesday.
+|So, '''$days''' zero equals '''Monday''', '''days''' one equals '''Tuesday'''.
 |-
 |02:53

@@ Line 25: / Line 25: @@
 |-
 |00:49
-|Hope you get the picture.
+|Hope you get the picture.This is a much easier and more efficient way of calling a variable with more than one piece of data inside it.
-|-
-|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

@@ Line 10: / Line 10: @@
 |-
 |00:08
-|For example, the variable days would be called as an array.
+|For example, the variable '''$days''' would be called as an array.
 |-
 |00:12
-|Inside a pair of parenthesis, we're going to have more than one value.
+|Inside a pair of parentheses, we're going to have more than one value.
 |-
 |00:17
@@ Line 22: / Line 22: @@
 |-
 |00:39
-|Say for example, day one is Monday, day two is Tuesday and so on.
+|Say for example, day one ($day1) is Monday, day two is Tuesday and so on.
 |-
 |00:49
@@ Line 31: / Line 31: @@
 |-
 |00:59
-|Please note, these can also be numbers or whatever data that you decide you require inside them.
+|Please note that 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''' '''$days'''.
 |-
 |01:12
@@ Line 43: / Line 43: @@
 |-
 |01:20
-|We just get 'Array' echoed out.
+|We just get "Array" echoed out.
 |-
 |01:22
-|Now, 'Array' is not anywhere inside here.
+|Now, "Array" is not anywhere inside here.
 |-
 |01:24
@@ Line 67: / Line 67: @@
 |-
 |02:09
-|The same with one would be Tuesday and four which is the last element of the array, would be Friday.
+|The same with one would be Tuesday and four which is the last element of the array would be Friday.
 |-
 |02:18
@@ Line 79: / Line 79: @@
 |-
 |02:39
-|So, '''days''' zero equals Monday, '''days''' one equals Tuesday.
+|So, '''$days''' zero equals Monday, '''days''' one equals Tuesday.
 |-
 |02:53
@@ Line 85: / Line 85: @@
 |-
 |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
@@ Line 94: / Line 94: @@
 |-
 |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
@@ Line 115: / Line 115: @@
 |-
 |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
@@ Line 121: / Line 121: @@
 |-
 |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
@@ Line 130: / Line 130: @@
 |-
 |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 $days''' and zero; you can see how that's in red to show an integer, a number.
 |-
 |05:09
@@ Line 145: / Line 145: @@
 |-
 |05:46
-|I'm going to say '''ages''' equals array, now inside, I'm going to say 'Alex'.
+|I'm going to say '''$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
@@ Line 157: / Line 157: @@
 |-
 |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
@@ Line 163: / Line 163: @@
 |-
 |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
@@ Line 190: / Line 190: @@
 |-
 |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 type 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