Difference between revisions of "PHP-and-MySQL/C2/Loops-For-Statement/English-timed"
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| − | | The basic principle of for loops is that it will repeat a block of codes the number of times you specify, using not only a condition but also the initialization in the beginning and the increment at the end. | + | | The basic principle of '''for''' loops is that it will repeat a '''block''' of '''codes''' the number of times you specify, using not only a '''condition''' but also the initialization in the beginning and the '''increment''' at the end. |
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|00:18 | |00:18 | ||
| − | | So how much you want to increment your variable determines the number of times your variable loops by. | + | | So, how much you want to increment your variable determines the number of times your variable loops by. |
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|00:38 | |00:38 | ||
| − | |So, it is a bit more complex to write. However it looks good | + | |So, it is a bit more complex to write. However, it looks good; it does the job and it's very compact. |
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|00:43 | |00:43 | ||
| − | |Now we write 'for' | + | |Now we write '''for'''. |
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|00:53 | |00:53 | ||
| − | | | + | |So, you have got three parts of your '''code''' here and your '''block''' and that is all you need and your content can go here. |
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|01:03 | |01:03 | ||
| − | |So, I am going to say 'echo' here and let's create a variable 'num'. So, we have echoed out 'num'. | + | |So, I am going to say '''echo''' here and let's create a variable '$num'. So, we have echoed out '''num'''. |
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|01:13 | |01:13 | ||
| − | |In here, we write num =1, not = = 1 because we are setting the variable num to the value of 1. | + | |In here, we write '''num =1''', not '= = 1' because we are setting the variable 'num' to the value of 1. |
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|01:22 | |01:22 | ||
| − | |Then we have a condition. For eg, while num < = to 10 | + | |Then we have a '''condition'''. For eg, '''while''' num <= to 10. |
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|01:31 | |01:31 | ||
| − | |Then, we have the increment values. So, we are going to have num ++ and the loop is done. | + | |Then, we have the '''increment''' values. So, we are going to have '''num ++''' and the '''loop''' is done. |
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|01:37 | |01:37 | ||
| − | |So, we type ' | + | |So, we type '''for''' and our variable '''num=1'''. |
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|01:47 | |01:47 | ||
| − | |Then we have our condition ' | + | |Then we have our '''condition''' '''while num<= 10''', the '''loop''' will continue and then we have '''num ++'''. |
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|01:52 | |01:52 | ||
| − | |As you can see this is much more useful than having num ++ down below | + | |As you can see, this is much more useful than having '''num ++''' down below |
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|01:55 | |01:55 | ||
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| − | |O.K., I forgot the line-break. | + | |O.K., I forgot the '''line-break'''. |
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|02:07 | |02:07 | ||
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|02:10 | |02:10 | ||
| − | |Refresh. | + | |'''Refresh'''. |
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|02:17 | |02:17 | ||
| − | |You've got your loop ten times. | + | |You've got your '''loop''' ten times. |
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|02:25 | |02:25 | ||
| − | |And as it has been specified in such a way it will loop only when num is less than or equal to 10. | + | |And as it has been specified in such a way, it will loop only when 'num' is less than or equal to 10. |
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|02:28 | |02:28 | ||
Revision as of 22:01, 20 May 2015
| Time | Narration |
| 00:00 | The basic principle of for loops is that it will repeat a block of codes the number of times you specify, using not only a condition but also the initialization in the beginning and the increment at the end. |
| 00:18 | So, how much you want to increment your variable determines the number of times your variable loops by. |
| 00:38 | So, it is a bit more complex to write. However, it looks good; it does the job and it's very compact. |
| 00:43 | Now we write for. |
| 00:53 | So, you have got three parts of your code here and your block and that is all you need and your content can go here. |
| 01:03 | So, I am going to say echo here and let's create a variable '$num'. So, we have echoed out num. |
| 01:13 | In here, we write num =1, not '= = 1' because we are setting the variable 'num' to the value of 1. |
| 01:22 | Then we have a condition. For eg, while num <= to 10. |
| 01:31 | Then, we have the increment values. So, we are going to have num ++ and the loop is done. |
| 01:37 | So, we type for and our variable num=1. |
| 01:47 | Then we have our condition while num<= 10, the loop will continue and then we have num ++. |
| 01:52 | As you can see, this is much more useful than having num ++ down below |
| 01:55 | and we need not declare this up here. |
| 01:59 | It can be declared inside these parentheses. |
| 02:02 | O.K., I forgot the line-break. |
| 02:07 | I’ll add a line break on to the end of this. |
| 02:10 | Refresh. |
| 02:12 | There you go. |
| 02:17 | You've got your loop ten times. |
| 02:25 | And as it has been specified in such a way, it will loop only when 'num' is less than or equal to 10. |
| 02:28 | After that the loop will break and you may continue with the rest of the script. |
| 02:36 | This is a bit more complex but once you learn the basics you will find it a lot easier . |
| 02:37 | Thanks for watching. |
