Difference between revisions of "PHP-and-MySQL/C2/Comparison-Operators/English-timed"
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| − | |My '''condition''' is '''if 1==1''' | + | |My '''condition''' is '''if 1==1''', |
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|00:30 | |00:30 | ||
| − | |'''echo''' | + | |'''echo''' |
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| − | | | + | |'''True''' |
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| − | |and then '''else''' | + | |and then '''else''' |
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|00:42 | |00:42 | ||
| − | |'''echo''' | + | |'''echo''' |
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|00:44 | |00:44 | ||
| − | | | + | |'''False'''. Remember, I don't need these brackets; so I'm going to take them out. |
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|00:51 | |00:51 | ||
| − | |Let's indent it. | + | |Let's '''indent''' it. |
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| − | |Two | + | |Two 'equals to' (==) means the 'comparison operator'. We've seen this in the '''if''' statement before. |
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| − | |We got | + | |We got '''True'''. |
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| − | |Let me change this. '''if | + | |Let me change this. '''if''' 1 is greater than 1 (1>1) then let's see what result we get. |
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| − | | | + | |'''False''', because 1 is equal to 1 and not greater than 1. |
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| − | |Now let's change this to | + | |Now let's change this to 1 greater than or equal to 1 (1>=1). |
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| − | |Here, we should get | + | |Here, we should get '''True'''. |
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| − | |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 (<) |
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|01:55 | |01:55 | ||
| − | |would be False, less than or equal to would be True. | + | |would be '''False''', less than or equal to (<=) would be '''True'''. |
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| − | |We can also say 'not equal'. So, if 1 is not equal to 1 '''echo''' | + | |We can also say 'not equal'. So, if 1 is not equal to 1 (1!=1) '''echo''' '''True'''. |
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|02:11 | |02:11 | ||
| − | |Refresh. We'll get | + | |Refresh. We'll get '''False''' here because 1 is equal to 1. Now let's say if 1 isn't equal to 2 (1!=2). |
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|02:20 | |02:20 | ||
| − | |We get | + | |We get '''True''' because 1 is not equal to 2. |
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| − | |This will produce exactly the same result as we've got earlier which is | + | |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. |
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|03:11 | |03:11 | ||
| − | |Please note, this will now read as num1 = 1, num2 = 1 | + | |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'''. |
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|03:24 | |03:24 | ||
Latest revision as of 12:50, 12 June 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 'equals to' (==) means the '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 (1>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 (1>=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 (1!=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 (1!=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. |
