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 ''' | + | | The basic principle of '''for''' loops is that it will repeat a '''block''' of '''code''' 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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| − | |So, I am going to say '''echo''' here and let | + | |So, I am going to say '''echo''' here and let us create a variable '$num'. So, we have echoed out '''num'''. |
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| − | |In here, we write '''num =1''', not '= = 1' because we are setting the variable 'num' to the value of 1. | + | |In here, we write '''$num =1''', not '= = 1' because we are setting the variable 'num' to the value of 1. |
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| − | |Then we have a '''condition'''. For eg, | + | |Then we have a '''condition'''. For eg, while '''$num <= 10'''. |
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| − | |So, we type '''for''' and our variable '''num=1'''. | + | |So, we type '''for''' and our variable '''$num=1'''. |
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| − | |Then we have our '''condition''' ''' | + | |Then we have our '''condition''': while '''$num''' is less than or equal to (<=) 10, the '''loop''' will continue and then we have '''num ++'''. |
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| − | |It can be declared inside these parentheses. | + | |It can also be declared inside these parentheses. |
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| − | |I’ll | + | |I’ll just add the line-break (<br>) to the end of this. |
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| − | | | + | |And there you go. |
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| − | |You | + | |You have your '''loop''' ten times. |
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| − | |And as it has been specified in such a way, it will loop only when 'num' is less than or equal to 10. | + | |And, as it has been specified in such a way, it will loop only when 'num' is less than or equal to 10. |
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Revision as of 16:46, 25 May 2015
| Time | Narration |
| 00:00 | The basic principle of for loops is that it will repeat a block of code the number of times you specify, using not only a condition but also the initialization in the beginning and the increment at the end. |
| 00:18 | So, how much you want to increment your variable determines the number of times your variable loops by. |
| 00:38 | So, it is a bit more complex to write. However, it looks good; it does the job and it's very compact. |
| 00:43 | Now we write for. |
| 00:53 | So, you have got three parts of your code here and your block and that is all you need and your content can go here. |
| 01:03 | So, I am going to say echo here and let us create a variable '$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 <= 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 is less than or equal to (<=) 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 also be declared inside these parentheses. |
| 02:02 | O.K., I forgot the line-break. |
| 02:07 | I’ll just add the line-break ( ) to the end of this. |
| 02:10 | Refresh. |
| 02:12 | And there you go. |
| 02:17 | You have 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. |
