PHP循环每十分钟

Question

How to make loop per tens like this one,

<?php

for ($i=0; $i < 30; $i++) { 
    if ($i == 1 || $ == 2 ... $i == 10) {
        # code...
    } elseif ($i == 11 || $ == 12 ... $i == 20) {
        # code...
    } else {
        # code...
    }

}

I need 1 2 3 4 5 is different from 11 12 13 14 15 and 21 22 23 24 25

Answer 1

There are several ways you could approach this :

1. Separate them

Since clearly, you're doing different code to the ranges 1-10, 11-20, a,d 21-30, then it would do you good to separate them into several for loops.

for ($i=1; $i <= 10; $i++) { 
    //code for $i 1-10
}

for ($i=11; $i <= 20; $i++) { 
    //code for $i 11-20
}

for ($i=21; $i <= 30; $i++) { 
    //code for $i 21-30
}

2. Put the conditionals inside one for loop, but use <= instead of ==

for ($i=1; $i <= 30; $i++) { 
    if($i <= 10){
        //code for $i 1-10
    }
    else if($i <= 20){
       // code for $i 11-20
    }
    else{
       // code for $i 21-30
    }
}

Alternatively, you could use $i > 0 && $i <= 10 for the if conditions if you prefer or for readability, but the above code does exactly the same with less.

Personally, for your specific example, I would prefer using the first option, as it is much more readable (for me).