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{|Border=1
 
{|Border=1
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!Time
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|'''Time'''
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!Narration
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|'''Narration'''
 
|-
 
|-
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|0:00
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|00:00
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|Welcome to a basic tutorial on PHP variables.  
+
|Welcome to a basic tutorial on '''PHP variables'''.  
 
|-
 
|-
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|0:04
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|00:04
 
|Let me quickly go through a few things first.  
 
|Let me quickly go through a few things first.  
 
|-
 
|-
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|0:07
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|00:07
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|PHP variables are very easy to use; I'm sure you'll understand them straight away.  
+
|'''PHP variables''' are very easy to use; I'm sure you'll understand them straight away.  
 
|-
 
|-
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|0:14
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|00:14
−
|You don't need to declare them and they're quite easy to write.  
+
|You don't need to '''declare''' them and they're quite easy to write.  
 
|-
 
|-
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|0:18
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|00:18
 
|You can add a value to a variable half way through the script.  
 
|You can add a value to a variable half way through the script.  
 
|-
 
|-
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|0:23
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|00:23
 
|Also, they automatically convert to the data type you require.
 
|Also, they automatically convert to the data type you require.
 
|-
 
|-
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|0:28
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|00:28
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|So there's no need to declare them in a different way each time, or create a value for them each time.  
+
|So, there's no need to declare them in a different way each time or create a value for them each time.  
 
|-
 
|-
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|0:36
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|00:36
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|So, for example, let's create our PHP tags here and our content goes in between.  
+
|So, for example, let's create our '''PHP tags''' here and our content goes in between.  
 
|-
 
|-
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|0:41
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|00:41
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|Okay. Now we start with the dollar sign and then we have our variable name.  
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|Okay. Now we start with the dollar sign ($) and then we have our variable '''name'''.  
 
|-
 
|-
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|0:48
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|00:48
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|Please note that you can't start with a "number". So I can't start with a '1'.  
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|Please note that you can't start with a number. So, I can't start with a '1'.  
 
|-
 
|-
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|0:53
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|00:53
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|What I can start with is an "underscore" or a "letter".  
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|What I can start with is: an '''underscore''' or a letter.  
 
|-
 
|-
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|0:57
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|00:57
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|No other special characters are allowed except underscores, letters and numbers, as long as it doesn't start with a number.  
+
|No other special characters are allowed except underscores, letters and numbers as long as it doesn't start with a number.  
 
|-
 
|-
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|1:06
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|01:06
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|So that would be perfectly acceptable here.  
+
|So, that would be perfectly acceptable here.  
 
|-
 
|-
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|1:09
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|01:09
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|Okay, so I'll create a variable called "name" and that's going to be equal to a string value contained within double quotes, just like we used for the "echo" function.  
+
|Okay. So, I'll create a variable called '''name''' and that's going to be equal to a string value contained within double quotes, just like we used for the "echo" function.  
 
|-
 
|-
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|1:21
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|01:21
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|'My name is Alex'.  
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|My name is "Alex".  
 
|-
 
|-
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|1:23
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|01:23
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|On the next line, we're going to create another variable using a dollar sign, called 'age'. That's going to be equal to '19', without double quotes.  
+
|On the next line, we're going to create another variable using a dollar sign ($) called '''age'''. That's going to be equal to '19', without double quotes.  
 
|-
 
|-
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|1:33
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|01:33
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|Now the reason for this is that this is an integer.  
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|Now, the reason for this is that is an integer.  
 
|-
 
|-
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|1:36
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|01:36
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|You can use it for decimal values as well. So this could be '19.5' or nineteen and a half.  
+
|You can use it for decimal values as well. So, this could be '19.5' or nineteen and a half.  
 
|-
 
|-
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|1:43
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|01:43
 
|That would also automatically convert this into a decimal.  
 
|That would also automatically convert this into a decimal.  
 
|-
 
|-
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|1:48
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|01:48
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|However, at the moment it's just an integer. That's how I want it - the variable 'name' is a string and the variable 'age' is an integer.  
+
|However, at the moment it's just an integer. That's how I want it - the variable 'name' is a '''string''' and the variable 'age' is an '''integer'''.  
 
|-
 
|-
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|1:57
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|01:57
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|So let's try echoing these out.  
+
|So, let's try echoing these out.  
 
|-
 
|-
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|2:00
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|02:00
 
|What we need is "echo" and the variable name, not forgetting your line terminator.  
 
|What we need is "echo" and the variable name, not forgetting your line terminator.  
 
|-
 
|-
−
|2:06
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|02:06
 
|Okay, let's find our file named "variables".  
 
|Okay, let's find our file named "variables".  
 
|-
 
|-
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|2:11
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|02:11
 
|Okay, "Alex" has been echoed out, just like I've said here, "echo name".  
 
|Okay, "Alex" has been echoed out, just like I've said here, "echo name".  
 
|-
 
|-
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|2:16
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|02:16
 
|Let's try and echo out my age now.  
 
|Let's try and echo out my age now.  
 
|-
 
|-
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|2:19
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|02:19
 
|It's just an integer variable and that's been echoed out here.  
 
|It's just an integer variable and that's been echoed out here.  
 
|-
 
|-
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|2:24
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|02:24
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|Okay so, the thing with variables is that they're very easy to concatenate into a string.  
+
|Okay. So, the thing with variables is that they are very easy to concatenate into a string.  
 
|-
 
|-
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|2:30
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|02:30
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|In fact, probably, concatenation is the wrong word – they're very easy to include inside your string.  
+
|In fact, probably, concatenation is a wrong word – they're very easy to include inside your string.  
 
|-
 
|-
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|2:37
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|02:37
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|If you don't know what concatenation is, it just means to join two things together or to join two strings together in a line.  
+
|If you don't know what concatenation is, it just means to join two things together or to join two '''strings''' together in a line.  
 
|-
 
|-
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|2:46
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|02:46
 
|So, an example of concatenation would be, let's see, 'concat' and then I could say, '.' and then 'ination'.  
 
|So, an example of concatenation would be, let's see, 'concat' and then I could say, '.' and then 'ination'.  
 
|-
 
|-
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|2:56
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|02:56
 
|Now, this would echo out 'concatination'.  
 
|Now, this would echo out 'concatination'.  
 
|-
 
|-
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|2:59
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|02:59
 
|Let's try this. Okay?  
 
|Let's try this. Okay?  
 
|-
 
|-
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|3:03
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|03:03
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|But there is a completely different tutorial on that. So, what I'll say is, for now, you don't need to include this as one of your variables when you're echoing it out.  
+
|But there is a completely different tutorial on that. So, what I'll say is, for now, you don't need to include this as one of your variables when you're echoing this out.  
 
|-
 
|-
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|3:14
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|03:14
−
|If you can't follow this, don't worry.  This is very, very simple.  
+
|If you can't follow this, don't worry.  This is very very simple.  
 
|-
 
|-
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|3:18
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|03:18
−
|I'll say "My name is" name "and my age is" and put my age down.  
+
|I'll say "My name is" '''$name''' "and my age is" and put my age down.  
 
|-
 
|-
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|3:24
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|03:24
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|Now, it's all in one string, all in one echo, and we've just got 'My name is' – plain text.  
+
|Now, it's all in one string, all in one echo and we've just got 'My name is' – plain text.  
 
|-
 
|-
−
|3:32
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|03:32
 
|Variable is called.  This is put here. And then when age is called, the value for age is put here.  
 
|Variable is called.  This is put here. And then when age is called, the value for age is put here.  
 
|-
 
|-
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|3:40
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|03:40
−
|So, we can refresh that and you can see that "My name is Alex".  That's our variable. "and my age is 19" and that's our variable.  
+
|So, we can '''refresh''' that and you can see that "My name is Alex", that's our variable; "and my age is 19" and that's our variable.  
 
|-
 
|-
−
|3:48
+
|03:48
−
|So they're really easy to put into strings.   
+
|So, they're really easy to put into strings.   
 
|-
 
|-
−
|3:52
+
|03:52
 
|Okay, this is all you really need to know about variables.  
 
|Okay, this is all you really need to know about variables.  
 
|-
 
|-
−
|3:56
+
|03:56
−
|There are other types of variables, like boolean, decimal – which I've shown you, for example like '19.5'.   
+
|There are other types of variables like boolean, decimal – which I've shown you, for example like '19.5'.   
 
|-
 
|-
−
|4:06
+
|04:06
 
|You would declare them in the same way, with a dollar sign.  
 
|You would declare them in the same way, with a dollar sign.  
 
|-
 
|-
−
|4:10
+
|04:10
−
|So practice this and you can come back and learn some more advanced functionality later on, when I'm going through some other projects.  
+
|So, practice this and you can come back and learn some more advanced functionality later on when I'm going through some other projects.  
 
|-
 
|-
−
|4:19
+
|04:19
 
|Thanks for watching!  This is Joshua Mathew dubbing for the Spoken Tutorial project. (Script contributed by Bhavini Pant).
 
|Thanks for watching!  This is Joshua Mathew dubbing for the Spoken Tutorial project. (Script contributed by Bhavini Pant).

Latest revision as of 14:26, 3 December 2018

Time Narration
00:00 Welcome to a basic tutorial on PHP variables.
00:04 Let me quickly go through a few things first.
00:07 PHP variables are very easy to use; I'm sure you'll understand them straight away.
00:14 You don't need to declare them and they're quite easy to write.
00:18 You can add a value to a variable half way through the script.
00:23 Also, they automatically convert to the data type you require.
00:28 So, there's no need to declare them in a different way each time or create a value for them each time.
00:36 So, for example, let's create our PHP tags here and our content goes in between.
00:41 Okay. Now we start with the dollar sign ($) and then we have our variable name.
00:48 Please note that you can't start with a number. So, I can't start with a '1'.
00:53 What I can start with is: an underscore or a letter.
00:57 No other special characters are allowed except underscores, letters and numbers as long as it doesn't start with a number.
01:06 So, that would be perfectly acceptable here.
01:09 Okay. So, I'll create a variable called name and that's going to be equal to a string value contained within double quotes, just like we used for the "echo" function.
01:21 My name is "Alex".
01:23 On the next line, we're going to create another variable using a dollar sign ($) called age. That's going to be equal to '19', without double quotes.
01:33 Now, the reason for this is that is an integer.
01:36 You can use it for decimal values as well. So, this could be '19.5' or nineteen and a half.
01:43 That would also automatically convert this into a decimal.
01:48 However, at the moment it's just an integer. That's how I want it - the variable 'name' is a string and the variable 'age' is an integer.
01:57 So, let's try echoing these out.
02:00 What we need is "echo" and the variable name, not forgetting your line terminator.
02:06 Okay, let's find our file named "variables".
02:11 Okay, "Alex" has been echoed out, just like I've said here, "echo name".
02:16 Let's try and echo out my age now.
02:19 It's just an integer variable and that's been echoed out here.
02:24 Okay. So, the thing with variables is that they are very easy to concatenate into a string.
02:30 In fact, probably, concatenation is a wrong word – they're very easy to include inside your string.
02:37 If you don't know what concatenation is, it just means to join two things together or to join two strings together in a line.
02:46 So, an example of concatenation would be, let's see, 'concat' and then I could say, '.' and then 'ination'.
02:56 Now, this would echo out 'concatination'.
02:59 Let's try this. Okay?
03:03 But there is a completely different tutorial on that. So, what I'll say is, for now, you don't need to include this as one of your variables when you're echoing this out.
03:14 If you can't follow this, don't worry. This is very very simple.
03:18 I'll say "My name is" $name "and my age is" and put my age down.
03:24 Now, it's all in one string, all in one echo and we've just got 'My name is' – plain text.
03:32 Variable is called. This is put here. And then when age is called, the value for age is put here.
03:40 So, we can refresh that and you can see that "My name is Alex", that's our variable; "and my age is 19" and that's our variable.
03:48 So, they're really easy to put into strings.
03:52 Okay, this is all you really need to know about variables.
03:56 There are other types of variables like boolean, decimal – which I've shown you, for example like '19.5'.
04:06 You would declare them in the same way, with a dollar sign.
04:10 So, practice this and you can come back and learn some more advanced functionality later on when I'm going through some other projects.
04:19 Thanks for watching! This is Joshua Mathew dubbing for the Spoken Tutorial project. (Script contributed by Bhavini Pant).

Contributors and Content Editors

Minal, Pratik kamble, Sandhya.np14

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