如何在php中分割/减去100个整数? - How can I split/substract an integer by 100 in php

给定一个整数为310，我希望这个整数像这样分割

在数组中存储时应该是这样的

arr[0] = 100;
arr[1] = 100;
arr[2] = 100;
arr[3] = 10;

编辑:我知道如何使用array_fill，但我需要一个不使用内置功能的解决方案，如array_fill

这个简单的函数可以帮助您将任何值分解为所需值的片段数。

<?php
$input = 310; // 100, 100, 100, 10
/**
* Breaks the number into summable pieces of array
* @param $input int
* @param $pcsvalue int
* @return $pieces array
* Eg. 
* $input = 310 
* $pcsvalue = 100 
* will be broken into 100, 100, 100, 10 
* or some other given piece value.
* final output = array(100, 100, 100, 10)
*/
function breakNumberIntoSmallPieces($input = 0, $pcsvalue) {
    $pieces = array();      
    if($input > 0) {
        $breakintovalueof = $pcsvalue;
        while(($op = $input - $breakintovalueof) > 0) {
            $pieces[] = $breakintovalueof;
            $input = $op;
        }
        $pieces[] = 100 + $op; // added into final op value because final op might be in negative value
    } else {
        $pieces[] = $input;
    }
    return $pieces;
}

$result = breakNumberIntoSmallPieces($input, 100);
echo '<pre>';
print_r($result);
?>

输出:

Array
(
    [0] => 100
    [1] => 100
    [2] => 100
    [3] => 10
)

另一个简洁明了的解决方案是:

<?php
    $input = 310;
    $pcsvalue = 100;
    $pieces = [];
    $remainder = $input % $pcsvalue; // returns 10
    $times = (int) ($input / $pcsvalue); // returns 3 by converting 3.1 to 3
    $i = 1;
    while($i <= $times){ // add 100 3 times into array
        $pieces[] = $pcsvalue;
        $i++;
    }
    if($remainder) {
        $pieces[] = $remainder;
    }
    echo '<pre>';
    print_r($pieces);
?>
Output:
Array
(
    [0] => 100
    [1] => 100
    [2] => 100
    [3] => 10
)

不使用array_fill:

$num = 310;
$slash = 100;
$array = [];
$mod = $num%$slash;
for($i=0;$i<(int)($num/$slash);$i++){
    $array[] = $slash;
}
if($mod) {
    $array[] = $mod;
}

我不明白你真正的问题，在一些假设我提供一些代码，你可能会使用

<?php
$arr=array();
$num=310;
while($num>=100)
{
    array_push($arr,100);
    $num=$num-100;
}
array_push($arr,$num);
print_r($arr);
?>

用下面的函数包装

<?php
    $number = 310;
    $splitAmount = 100;
    $splittedArray = splitNumberInArray($number, $splitAmount);
    var_dump($splittedArray);
    function splitNumberInArray($number, $splitAmount) {
        $returnArray = array();
        while($number > 0) {    
            if($number < $splitAmount)
                $splitAmount = $number;
            $number -= $splitAmount;
            array_push($returnArray, $splitAmount);
        }
        return $returnArray;
    }
    /*
         result: 
         array (size=4)
             0 => int 100
             1 => int 100
             2 => int 100
             3 => int 10
    */
?>

试试这个:(现在甚至负数都是受欢迎的!)

<?php
function breakTheNum($number, $breakWith = 100) {
    $float = $number / $breakWith;
    $count = floor($float);
    $outarr = array();
    if($count > 0) {
        for($i=0; $i<$count; $i++) {
            $outarr[] = 100;
        }
        $outarr[] = ($float - $count) * $breakWith;
    }
    elseif($count < 0) {
        for($i=0; $i>$count+1; $i--) {
            $outarr[] = -100;
        }
        $outarr[] = ($float - ($count+1)) * $breakWith;
    }
    else {
        $outarr[0] = $float * $breakWith;
    }
    return $outarr;
}
    $array = breakTheNum(334);
    print_r($array);
?>

结果:

Array ( [0] => 100 [1] => 100 [2] => 100 [3] => 34 )

例如breakTheNum(-534):

Array ( [0] => -100 [1] => -100 [2] => -100 [3] => -100 [4] => -100 [5] => -34 )

/**
 * @param $number
 * @param $step
 * @return array
 */
function break_into_peaces($number, $step) {
    $array = array();
    while($number >= $step) {
        array_push($array, $step);
        $number = $number-$step;
    }
    array_push($array, $number);
    return $array;
}
var_dump(
    break_into_peaces(334, 100) // 100, 100, 100, 34
);
var_dump(
    break_into_peaces(334, 50) // 50, 50, 50, 50, 50 , 50, 34
);