For statement changes

In the process of software development, you sometimes need to use multiple forms of for statements flexibly. Other forms of for statements are listed in the example code!
// The first change extracts the first part of the for Loop syntax
<? Php
$ I = 1;
For (; $ I <2; $ I ++) {// The first semicolon cannot be omitted.
Echo "This is the first output". $ I! </Br> ";
}
?>
 
// For the second change, extract the first part of the for Loop syntax, and put the increment of the third part into the for loop body.
 
<? Php
$ I = 1;
For (; $ I <2;) {// The first semicolon cannot be omitted
Echo "This is the first output". $ I! </Br> ";
$ I ++;
}
?>
 
// In the third change, all for loop syntax is omitted.
<? Php
$ I = 1;
For (;) {// The first semicolon cannot be omitted
If ($ I> 1)
Break;
Echo "This is the first output". $ I! </Br> ";
$ I ++;
}
?>
All programs have been tuned in Apache 2.2 + PHP5.2.6!
 
If the program is poor, it will be changed, and the general principles will be reached. It seems that there is also such a philosophy in the program!



From the column in chuoyue05