foreach 循环每运行 50 次，如何将值递增 1

Question

如何在 foreach 循环中每运行 50 次递增一个值。

<?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来检查您何时完成了 50 次迭代

<?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

我不会提供完整的答案，因为我不想鼓励这样的问题。但是，如果你真的被卡住了，这只是你的一个想法，你将需要两个变量，一个会在每次循环运行时递增，另一个会检查第一个变量，并且只有当第一个变量被 50 整除时才会递增。

Answer 3

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

Answer 4

        <?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;
}
}

foreach 循环每运行 50 次，如何将值递增 1

How can I increment by a value by 1 for every 50 times a foreach loop runs

php

foreach

increment