字符串怎么按照"."和"?"同时切割

在PHP中，你可以使用explode()函数来按照指定的分隔符切割字符串。例如，如果你想按照"."和"?"同时切割字符串，你可以这样做：

$str = "a.string.separated.by.question.mark";
$splits = explode(".", $str);
$result = \[\];
foreach ($splits as $split) {
    $result = array_merge($result, explode("?", $split));
}
print_r($result);

这将输出以下结果：

Array
(
    \[0\] => a
    \[1\] => string
    \[2\] => separated
    \[3\] => by
    \[4\] => question
    \[5\] => mark
)

请注意，我们首先使用explode()函数按照"."切割字符串，然后再使用foreach循环遍历每个切割后的子字符串，并使用explode()函数按照"?"切割每个子字符串。最后，我们将所有的切割结果合并到一个数组中。
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