PHP在n个逗号后换行

我想在n个逗号后插入新行。 例如，我得到了这个值：

3853863873883893903913923939439539639739839940040140240340440640740949494104114124134144154174184194204214224425426

我怎么能重复它们，但每5个逗号都应该有一个换行符

385386387388389，
390,391,392,393,394,
395,396,397,398,399,
400,401,402,403,404,
405,406,407,408,409,
410,411,412,413,414,
415,416,417,418,419,
420,421,422,423,424,
425426

像这样试试

您可以使用逗号分解字符串，并每5次检查一次 位置应该有一个断线

你可以用带5的分频键来检查它。（也就是说）它会给你一个 0的余数

请注意，键从0开始，所以我添加了（键+1），使其从1开始

$string=“3853863873893903913923933994395396397398399400401402403404406407408409410411412414415416417418419420421422424425426”；
$stringexplode=explode（“，”，$string）；
$countstringexplode=计数（$stringexplode）；
foreach（$stringexplode作为$key=>$val）
{
$keyIncrement=$key+1；
echo$val.（$countstringexplode==$keyIncrement？”：“，”；
如果（（$keyIncrement）%5==0）
回声“
”；
}
?>

这里有一个方法：

// Get all numbers
$numbers = explode(',', $str);
// Split into groups of 5 (n)
$lines = array_chunk($numbers, 5);
// Format each line as comma delimited
$formattedLines = array_map(function ($row) { return implode(',', $row); }, $lines);
// Format groups into new lines with commas at the end of each line (except the last)
$output = implode(",\n", $formattedLines);

试试这个

<?php
//Start //Add this code if your values in string like that
$string = "385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,426";
$string_array = explode(',', $string);
//End //Add this code if your values in string like that

//If you have values in array then direct use below code skip above code and replace $string_array variable with yours 

end($string_array);        
$last = key($string_array);

foreach ($string_array as $key => $value) {
    if($last==$key){
        echo $value;
    }else{
        echo $value.',';
    }
    if(($key+1)%5==0){
        echo "<br />";
    }
}

?>

你试过什么吗？你应该试着至少发布一些代码，这表明你已经尝试了一些东西，而不是仅仅发布问题来获得答案。你可以删除

，”array\u map（）

中调用code>并将其添加到最后一位

内爆（“，\n”

我也尝试过使用explode的最佳方法之一，但无法对数组项进行计数。这就像一个charme

<?php
//Start //Add this code if your values in string like that
$string = "385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,426";
$string_array = explode(',', $string);
//End //Add this code if your values in string like that

//If you have values in array then direct use below code skip above code and replace $string_array variable with yours 

end($string_array);        
$last = key($string_array);

foreach ($string_array as $key => $value) {
    if($last==$key){
        echo $value;
    }else{
        echo $value.',';
    }
    if(($key+1)%5==0){
        echo "<br />";
    }
}

?>