Difference between revisions of "PHP-and-MySQL/C2/Comparison-Operators/English-timed"
From Script | Spoken-Tutorial
Sandhya.np14 (Talk | contribs) |
|||
| Line 4: | Line 4: | ||
|- | |- | ||
|00:00 | |00:00 | ||
| − | |In this PHP tutorial we will learn about Comparison Operators. | + | |In this '''PHP''' tutorial, we will learn about '''Comparison Operators'''. |
|- | |- | ||
|00:05 | |00:05 | ||
| − | |Comparison | + | |Comparison operators can compare 2 '''values''', 2 '''strings''' or 2 '''variables''' that can contain any of them and will act upon that. |
|- | |- | ||
|00:15 | |00:15 | ||
| − | |For this I am going to use an | + | |For this, I am going to use an '''if''' statement. |
|- | |- | ||
|00:19 | |00:19 | ||
| − | | | + | |Let's start by creating the '''if''' statement structure. |
|- | |- | ||
|00:25 | |00:25 | ||
| − | |My condition is if 1==1. | + | |My '''condition''' is '''if 1==1'''. |
|- | |- | ||
|00:30 | |00:30 | ||
| − | |echo. | + | |'''echo'''. |
|- | |- | ||
|00:33 | |00:33 | ||
| − | |True. | + | |"True". |
|- | |- | ||
|00:37 | |00:37 | ||
| − | |and then else. | + | |and then '''else'''. |
|- | |- | ||
|00:42 | |00:42 | ||
| − | |echo. | + | |'''echo'''. |
|- | |- | ||
|00:44 | |00:44 | ||
| − | |False. Remember I don't need these brackets so I'm going to take them out. | + | |"False". Remember, I don't need these brackets; so I'm going to take them out. |
|- | |- | ||
|00:51 | |00:51 | ||
| − | | | + | |Let's indent it. |
|- | |- | ||
|00:56 | |00:56 | ||
| Line 43: | Line 43: | ||
|- | |- | ||
|01:02 | |01:02 | ||
| − | |Two = to means comparison operator. We've seen this in the | + | |Two = to means comparison operator. We've seen this in the '''if''' statement before. |
|- | |- | ||
|01:08 | |01:08 | ||
| − | |1 does equal to 1 so this will echo True. | + | |1 does equal to 1; so this will '''echo''' "True". Let's try it. |
|- | |- | ||
|01:13 | |01:13 | ||
| − | |We got True. | + | |We got "True". |
|- | |- | ||
|01:15 | |01:15 | ||
| − | |Let me change this. | + | |Let me change this. '''if''' '1 is greater than 1' then let's see what result we get. |
|- | |- | ||
|01:27 | |01:27 | ||
| − | |False, because 1 is equal to 1 and not greater than 1. | + | |"False", because 1 is equal to 1 and not greater than 1. |
|- | |- | ||
|01:33 | |01:33 | ||
| − | |Now | + | |Now let's change this to '1 greater than or equal to 1'. |
|- | |- | ||
|01:37 | |01:37 | ||
| − | | | + | |'''if''' 1 greater than or equal to 1, '''echo''' "True" else '''echo''' "False". |
|- | |- | ||
|01:45 | |01:45 | ||
| − | |Here we should get True. | + | |Here, we should get "True". |
|- | |- | ||
|01:48 | |01:48 | ||
| − | |You can also do the same with less than or equal to. So for example less than | + | |You can also do the same with 'less than or equal to'. So, for example: less than |
|- | |- | ||
|01:55 | |01:55 | ||
| Line 73: | Line 73: | ||
|- | |- | ||
|02:01 | |02:01 | ||
| − | |We can also say not equal. So if 1 is not equal to 1 echo True | + | |We can also say 'not equal'. So, if 1 is not equal to 1 '''echo''' "True". |
|- | |- | ||
|02:11 | |02:11 | ||
| − | |Refresh. We'll get False here because 1 is equal to 1. Now | + | |Refresh. We'll get "False" here because 1 is equal to 1. Now let's say if 1 isn't equal to 2. |
|- | |- | ||
|02:20 | |02:20 | ||
| − | |We get True because 1 is not equal to 2 | + | |We get "True" because 1 is not equal to 2. |
|- | |- | ||
|02:25 | |02:25 | ||
| − | |These are the basic | + | |These are the basic comparison operators that you will be using for our tutorials. |
|- | |- | ||
|02:33 | |02:33 | ||
| − | |Expand on this - practice them - and you'll understand them better | + | |Expand on this - practice them - and you'll understand them better. |
|- | |- | ||
|02:40 | |02:40 | ||
| − | |You can also compare variables using these operators. | + | |You can also compare variables using these operators. So for example: num1 = 1, |
|- | |- | ||
|02:48 | |02:48 | ||
| − | |num2 = 2. | + | |num2 = 2. All we now do is, replace these values and there we go. |
|- | |- | ||
|03:01 | |03:01 | ||
| − | |This will produce exactly the same result as we've got earlier | + | |This will produce exactly the same result as we've got earlier which is "True". Now all we need to do is, change these values. |
|- | |- | ||
|03:11 | |03:11 | ||
| − | |Please note this will now read as num1 = 1 num2 = 1 so if num1 doesn't equal 1 it is False because 1 does equal 1 therefore we get False | + | |Please note, this will now read as num1 = 1, num2 = 1 so if num1 doesn't equal 1 it is False because 1 does equal 1 therefore we get False. |
|- | |- | ||
|03:24 | |03:24 | ||
| − | |These here are the simple | + | |These here are the simple comparison operators. Play around with them. See what you can do. Thanks for watching. |
|- | |- | ||
|03:33 | |03:33 | ||
| − | |This is Mad Madhur dubbing for the Spoken Tutorial Project. | + | |This is Mad Madhur, dubbing for the Spoken Tutorial Project. |
|- | |- | ||
Revision as of 18:20, 19 May 2015
| Time | Narration |
| 00:00 | In this PHP tutorial, we will learn about Comparison Operators. |
| 00:05 | Comparison operators can compare 2 values, 2 strings or 2 variables that can contain any of them and will act upon that. |
| 00:15 | For this, I am going to use an if statement. |
| 00:19 | Let's start by creating the if statement structure. |
| 00:25 | My condition is if 1==1. |
| 00:30 | echo. |
| 00:33 | "True". |
| 00:37 | and then else. |
| 00:42 | echo. |
| 00:44 | "False". Remember, I don't need these brackets; so I'm going to take them out. |
| 00:51 | Let's indent it. |
| 00:56 | Never mind the indenting. |
| 00:59 | This is the first comparison operator. |
| 01:02 | Two = to means comparison operator. We've seen this in the if statement before. |
| 01:08 | 1 does equal to 1; so this will echo "True". Let's try it. |
| 01:13 | We got "True". |
| 01:15 | Let me change this. if '1 is greater than 1' then let's see what result we get. |
| 01:27 | "False", because 1 is equal to 1 and not greater than 1. |
| 01:33 | Now let's change this to '1 greater than or equal to 1'. |
| 01:37 | if 1 greater than or equal to 1, echo "True" else echo "False". |
| 01:45 | Here, we should get "True". |
| 01:48 | You can also do the same with 'less than or equal to'. So, for example: less than |
| 01:55 | would be False, less than or equal to would be True. |
| 02:01 | We can also say 'not equal'. So, if 1 is not equal to 1 echo "True". |
| 02:11 | Refresh. We'll get "False" here because 1 is equal to 1. Now let's say if 1 isn't equal to 2. |
| 02:20 | We get "True" because 1 is not equal to 2. |
| 02:25 | These are the basic comparison operators that you will be using for our tutorials. |
| 02:33 | Expand on this - practice them - and you'll understand them better. |
| 02:40 | You can also compare variables using these operators. So for example: num1 = 1, |
| 02:48 | num2 = 2. All we now do is, replace these values and there we go. |
| 03:01 | This will produce exactly the same result as we've got earlier which is "True". Now all we need to do is, change these values. |
| 03:11 | Please note, this will now read as num1 = 1, num2 = 1 so if num1 doesn't equal 1 it is False because 1 does equal 1 therefore we get False. |
| 03:24 | These here are the simple comparison operators. Play around with them. See what you can do. Thanks for watching. |
| 03:33 | This is Mad Madhur, dubbing for the Spoken Tutorial Project. |
