Php 如果数字为一位数，则多次替换并添加前面的0

我有如下字符串

Season 6, Episode 10
Season 21, Episode 10
Season 6, Episode 1

应将其转换为以下字符串

S06E10
S21E10
S06E01

我试过下面的代码

$shortseason = str_replace("Season ","S",$season);
$shortseason = str_replace("Episode ","E",$shortseason);
$shortseason = str_replace(", ","",$shortseason);

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我无法在上述代码中添加前面的0，是否有其他方法可以轻松完成此操作。

使用正则表达式：

您可以使用regex（在那些
str_replace（）
之后）在该数字之前添加一个
0
，如果它是一位数字。试试这个：

$season="Season 6, Episode 10
Season 21, Episode 10
Season 6, Episode 1";

$shortseason = str_replace("Season ","S",$season);
$shortseason = str_replace("Episode ","E",$shortseason);
$shortseason = str_replace(", ","",$shortseason);

$pattern1 = '/(S)(\dE)/m';
$pattern2 = '/(E)(\d)(?:\n|$)/m';
$replacement = '${1}0$2';
$shortseason = preg_replace($pattern1, $replacement, $shortseason );
echo preg_replace($pattern2, $replacement, $shortseason );

我会使用preg_replace来执行此操作：

function convert($s) {
    return preg_replace ( '/^Season (\d+), Episode (\d+)$/e', "'S'.str_pad($1,2,'0',STR_PAD_LEFT).'E'.str_pad($2,2,'0',STR_PAD_LEFT)", $s );
}

echo convert ( "Season 6, Episode 10" ) . "\n";
echo convert ( "Season 21, Episode 10" ) . "\n";
echo convert ( "Season 6, Episode 1" ) . "\n";

输出：

S06E10
S21E10
S06E01

就是这样：试着让我知道

$str = "Season 6, Episode 10";

$arr = explode(", ", $str);

$shortseason1 = explode(" ", $arr[0]);
$shortseason2 = explode(" ", $arr[1]);

echo $short = substr($shortseason1[0], 0, 1).sprintf("%02d", $shortseason1[1]).substr($shortseason2[0], 0, 1).sprintf("%02d", $shortseason2[1]);

输出：S06E10

对其他人也一样。
你需要使用
sprintf（“%02d”，$num）
@FrayneKonok:问题是从stringokey中分别获取数字。让我帮你做。检查我的答案。如果你需要为所有人做同样的事情，那么只需使用循环。现在开始工作谢谢，但它没有为季节添加之前的0抱歉，很多错误，第1季，第1集必须是S01E01，拉桑答案正在工作，谢谢anyways@Vishnu胡奥夫。。。我编辑了我的答案，现在也可以了（试了5次之后）

）。。顺便说一句，我很高兴你找到了一个有效的解决方案。它不是添加0@Vishnu它通过str_pad添加

$str = "Season 6, Episode 10";

$arr = explode(", ", $str);

$shortseason1 = explode(" ", $arr[0]);
$shortseason2 = explode(" ", $arr[1]);

echo $short = substr($shortseason1[0], 0, 1).sprintf("%02d", $shortseason1[1]).substr($shortseason2[0], 0, 1).sprintf("%02d", $shortseason2[1]);