Difference between revisions of "PHP-and-MySQL/C2/Comparison-Operators /English"
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Latest revision as of 12:01, 29 November 2012
| Time | Narration |
|---|---|
| 0:00 | In this PHP tutorial we will learn about Comparison Operators. |
| 0:04 | Comparison Operators can compare 2 values, 2 strings or 2 variables that can contain any of them and will act upon that. |
| 0:12 | For this I am going to use an IF statement. |
| 0:19 | Lets start by creating the IF statement structure. |
| 0:30 | My condition is if 1==1. |
| 0:33 | echo. |
| 0:36 | True. |
| 0:39 | and then else. |
| 0:43 | echo. |
| 0:46 | False. Remember I don't need these brackets so I'm going to take them out. |
| 0:51 | Lets indent it |
| 0:53 | Never mind the indenting. |
| 0:58 | This is the first comparison operator. |
| 1:02 | 2 = to means comparison operator. We've seen this in the IF statement before. |
| 1:06 | 1 does equal to 1 so this will echo True. Lets try it. |
| 1:11 | We got True. |
| 1:13 | Let me change this. IF 1 is greater than 1 then lets see what result we get. |
| 1:27 | False, because 1 is equal to 1 and not greater than 1. |
| 1:33 | Now lets change this to 1 greater than or equal to 1 |
| 1:36 | IF 1 greater than or equal to 1, echo True otherwise echo False. |
| 1:43 | Here we should get True. |
| 1:48 | You can also do the same with less than or equal to. So for example less than |
| 1:55 | would be False, less than or equal to would be True. |
| 2:01 | We can also say not equal. So if 1 is not equal to 1 echo True |
| 2:12 | Refresh. We'll get False here because 1 is equal to 1. Now lets say if 1 isn't equal to 2 |
| 2:20 | We get True because 1 is not equal to 2 |
| 2:25 | These are the basic Comparison Operators that you will be using for our tutorials |
| 2:33 | Expand on this - practice them - and you'll understand them better |
| 2:41 | You can also compare variables using these operators. So for example num1 = 1 |
| 2:48 | num2 = 2. All we now do is replace these values and there we go |
| 2:58 | 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 |
| 3:05 | 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 |
| 3:21 | These are the simple Comparison Operators. Play around with them. See what you can do. Thanks for watching. |
| 3:30 | This is Mad Madhur dubbing for the Spoken Tutorial Project. |
