示例：
$match_check = "(?'txt'(?<=:txt{)([^}]+)(?=}))|(?'reg'(?<=:reg{)([^}]+)(?=}))";
$route_from_value = ':txt{resultxt}:txt{test}:reg{/^[a-zA-Z]*$/}:reg{regexresult}';
preg_match_all('/'.$match_check.'/', $route_from_value, $get_matchers_check);
var_dump($get_matchers_check);
给定问题的结果是：
array(7) {
[0] =>
array(4) {
[0] =>
string(8) "resultxt"
[1] =>
string(4) "test"
[2] =>
string(13) "/^[a-zA-Z]*$/"
[3] =>
string(11) "regexresult"
}
'txt' =>
array(4) {
[0] =>
string(8) "resultxt"
[1] =>
string(4) "test"
[2] =>
string(0) ""
[3] =>
string(0) ""
}
[1] =>
array(4) {
[0] =>
string(8) "resultxt"
[1] =>
string(4) "test"
[2] =>
string(0) ""
[3] =>
string(0) ""
}
[2] =>
array(4) {
[0] =>
string(8) "resultxt"
[1] =>
string(4) "test"
[2] =>
string(0) ""
[3] =>
string(0) ""
}
'reg' =>
array(4) {
[0] =>
string(0) ""
[1] =>
string(0) ""
[2] =>
string(13) "/^[a-zA-Z]*$/"
[3] =>
string(11) "regexresult"
}
[3] =>
array(4) {
[0] =>
string(0) ""
[1] =>
string(0) ""
[2] =>
string(13) "/^[a-zA-Z]*$/"
[3] =>
string(11) "regexresult"
}
[4] =>
array(4) {
[0] =>
string(0) ""
[1] =>
string(0) ""
[2] =>
string(13) "/^[a-zA-Z]*$/"
[3] =>
string(11) "regexresult"
}
}
但是，预期的结果应该是（如何仅使用正则表达式？）或简单地：
'txt' =>
array(4) {
[0] =>
string(8) "resultxt"
},
'txt' =>
array(4) {
[0] =>
string(8) "resultxt"
}
'reg' =>
array(4) {
[0] =>
string(8) "/^[a-zA-Z]*$/"
}
'reg' =>
array(4) {
[0] =>
string(8) "regexresult"
}
preg_match_all 和 preg_split 函数的输出遵循与您想要的不匹配的格式。
您可以做的是对preg_match_all的输出进行一些后处理以获得结果（类似于['key', 'value']对数组）。请注意，您应该设置标志PREG_OFFSET_CAPTURE以获取匹配的索引进行比较。与任何内容都不匹配的捕获组将提供索引-1，或者不会返回包含 2 个元素的数组。
顺便说一下，您可以从正则表达式中删除一些不必要的捕获组。
"(?'txt'(?<=:txt{)[^}]+(?=}))|(?'reg'(?<=:reg{)[^}]+(?=}))"
示例运行：
$matches = null;
$returnValue = preg_match_all('/(?''txt''(?<=:txt{)[^}]+(?=}))|(?''reg''(?<=:reg{)[^}]+(?=}))/', ':txt{resultxt}:txt{test}:reg{/^[a-zA-Z]*$/}:reg{regexresult}', $matches, PREG_OFFSET_CAPTURE);
输出：
array (
0 =>
array (
0 =>
array (
0 => 'resultxt',
1 => 5,
),
1 =>
array (
0 => 'test',
1 => 19,
),
2 =>
array (
0 => '/^[a-zA-Z]*$/',
1 => 29,
),
3 =>
array (
0 => 'regexresult',
1 => 48,
),
),
'txt' =>
array (
0 =>
array (
0 => 'resultxt',
1 => 5,
),
1 =>
array (
0 => 'test',
1 => 19,
),
2 => // No match found, index -1
array (
0 => '',
1 => -1,
),
3 => // No match found, index -1
array (
0 => '',
1 => -1,
),
),
1 =>
array (
0 =>
array (
0 => 'resultxt',
1 => 5,
),
1 =>
array (
0 => 'test',
1 => 19,
),
2 =>
array (
0 => '',
1 => -1,
),
3 =>
array (
0 => '',
1 => -1,
),
),
'reg' =>
array (
0 => '', // No match found, not array of 2 elements [<matched text>, <index>]
1 => '', // No match found, not array of 2 elements [<matched text>, <index>]
2 =>
array (
0 => '/^[a-zA-Z]*$/',
1 => 29,
),
3 =>
array (
0 => 'regexresult',
1 => 48,
),
),
2 =>
array (
0 => '',
1 => '',
2 =>
array (
0 => '/^[a-zA-Z]*$/',
1 => 29,
),
3 =>
array (
0 => 'regexresult',
1 => 48,
),
),
)