Question

我如何在foreach循环中每运行50次就增加一个值。

<?php

$counter = 1; 
foreach ($numbers as $num) {
      //For the first 50 times the loop runs, $counter = 1. For every 50 runs, increment by 1
$counter = 1;

//if loop has run more than 50 times, increment $counter to 2 


}
?>

Answer 1

您可以使用另一个计数器检查完成50次迭代的时间

<?php

$counter = 1;
$MiniCounter = 0;
foreach ($numbers as $num)
{
    // Pre-increment since $MiniCounter starts by 0
    if (++$MiniCounter >= 50) // using >= 50 because, who knows, $MiniCounter may jump magically from 49 to 51
    {
        $MiniCounter = 0; //reset the mini counter
        $counter++;
    }
}
?>

Answer 2

        <?php 
    $counter = 0;
    $value = 50; // Intial position
    $numbers = 230 // Lets say you have total 230 iterations.
    for ($i = 0 ; $i <= $numbers ; i++)
    {
     if($i == $value) // if 50 counter is increased and we are setting the value to 100
{
$counter += 1;
$value = $value * 2;
}
}

Answer 3

我不想提供完整的答案，因为我不想鼓励这样的问题。但是，如果您确实陷入困境，那么您将需要两个变量，一个变量将在每次循环运行时递增，另一个变量将检查第一个变量，并且仅在第一个变量可被50整除时才会递增。 >

Answer 4

$counter = 1;
$loop_ctr = 0;
$increment_by = 1;
foreach($numbers as $num)
{
    $counter+=$increment_by;
    $loop_ctr++;        
    if($loop_ctr == 50)
    {
        $increment_by = 2;
    }
}

我如何每运行一次foreach循环每50次将值增加1

4 个答案: