问题描述
我得到了不同的结果，谁能告诉我为什么?
I get differents results, anyone could tell me why?
正则表达式:
[0-9]+(?:\s){0,10}(?:\r?\n?)([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2}),([0-9]{1,3}) --> ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2}),([0-9]{1,3})(?:\s){0,10}(?:\r\n|\n|\r){1}(.*\r?\n?.*\r?\n?.*)(?:\n|\r)(?:\n|\r)
在 Regex101 上，我使用gm"修饰符.
On Regex101 I use 'gm' modifiers.
我在 PHP 上使用:
On PHP I use:
preg_match_all($this->Pattern, $txt, $matches, PREG_SET_ORDER);
Regex101 结果(看匹配 4 - 这是正确的.模式只得到空行，没有任何时间线文本"):
Regex101 result (look match 4 - this is correct. Pattern get only empty line, without any "time line text"):
MATCH 1
1. [2-4] `00`
2. [5-7] `00`
3. [8-10] `01`
4. [11-14] `163`
5. [19-21] `00`
6. [22-24] `00`
7. [25-27] `05`
8. [28-31] `150`
9. [32-39] `aaaaaaa`
MATCH 2
1. [43-45] `00`
2. [46-48] `00`
3. [49-51] `05`
4. [52-55] `556`
5. [60-62] `00`
6. [63-65] `00`
7. [66-68] `05`
8. [69-72] `921`
9. [73-82] `bbbb
bbbb`
MATCH 3
1. [86-88] `00`
2. [89-91] `00`
3. [92-94] `07`
4. [95-98] `753`
5. [103-105] `00`
6. [106-108] `00`
7. [109-111] `08`
8. [112-115] `168`
9. [116-130] `cccccccccccccc`
MATCH 4
1. [134-136] `00`
2. [137-139] `00`
3. [140-142] `22`
4. [143-146] `854`
5. [151-153] `00`
6. [154-156] `00`
7. [157-159] `28`
8. [160-163] `721`
9. [164-164] ``
MATCH 5
1. [168-170] `00`
2. [171-173] `00`
3. [174-176] `23`
4. [177-180] `336`
5. [185-187] `00`
6. [188-190] `00`
7. [191-193] `31`
8. [194-197] `558`
9. [198-228] `dddddddddddddd
dddddddddddddd
`
MATCH 6
1. [232-234] `00`
2. [235-237] `00`
3. [238-240] `34`
4. [241-244] `228`
5. [249-251] `00`
6. [252-254] `00`
7. [255-257] `36`
8. [258-261] `296`
9. [262-276] `eeeeeeeeeeeeee`
MATCH 7
1. [280-282] `00`
2. [283-285] `00`
3. [286-288] `35`
4. [289-292] `165`
5. [297-299] `00`
6. [300-302] `00`
7. [303-305] `39`
8. [306-309] `785`
9. [310-320] `fffff
ffff`
我的服务器结果(看[3] => Array"，模式得到两个时间线"):
My Server Results (look at "[3] => Array", pattern gets two "time lines"):
(
[0] => Array
(
[0] => 1
00:00:01,163 --> 00:00:05,150
aaaaaaa
2
[1] => 00
[2] => 00
[3] => 01
[4] => 163
[5] => 00
[6] => 00
[7] => 05
[8] => 150
[9] => aaaaaaa
2
)
[1] => Array
(
[0] => 00:00:05,556 --> 00:00:05,921
bbbb
bbbb
[1] => 0
[2] => 00
[3] => 05
[4] => 556
[5] => 00
[6] => 00
[7] => 05
[8] => 921
[9] => bbbb
bbbb
)
[2] => Array
(
[0] => 3
00:00:07,753 --> 00:00:08,168
cccccccccccccc
4
[1] => 00
[2] => 00
[3] => 07
[4] => 753
[5] => 00
[6] => 00
[7] => 08
[8] => 168
[9] => cccccccccccccc
4
)
[3] => Array
(
[0] => 00:00:22,854 --> 00:00:28,721
5
00:00:23,336 --> 00:00:31,558
dddddddddddddd
[1] => 0
[2] => 00
[3] => 22
[4] => 854
[5] => 00
[6] => 00
[7] => 28
[8] => 721
[9] => 5
00:00:23,336 --> 00:00:31,558
dddddddddddddd
)
[4] => Array
(
[0] => 6
00:00:34,228 --> 00:00:36,296
eeeeeeeeeeeeee
7
[1] => 00
[2] => 00
[3] => 34
[4] => 228
[5] => 00
[6] => 00
[7] => 36
[8] => 296
[9] => eeeeeeeeeeeeee
7
)
[5] => Array
(
[0] => 00:00:35,165 --> 00:00:39,785
fffff
ffff
[1] => 0
[2] => 00
[3] => 35
[4] => 165
[5] => 00
[6] => 00
[7] => 39
[8] => 785
[9] => fffff
ffff
)
)
测试字符串:
1
00:00:01,163 --> 00:00:05,150
aaaaaaa
2
00:00:05,556 --> 00:00:05,921
bbbb
bbbb
3
00:00:07,753 --> 00:00:08,168
cccccccccccccc
4
00:00:22,854 --> 00:00:28,721
5
00:00:23,336 --> 00:00:31,558
dddddddddddddd
dddddddddddddd
6
00:00:34,228 --> 00:00:36,296
eeeeeeeeeeeeee
7
00:00:35,165 --> 00:00:39,785
fffff
ffff
推荐答案
发生这种情况的原因是 regex101 (\n) 和您的输入 (\r\n).
The reason why this happens is the different line break styles at regex101 (\n) and in your input (\r\n).
您可以通过对任何类型的换行符使用统一的 \R 模式轻松解决此问题.
You can easily solve this by using a unified \R pattern for any kind of linebreaks.
注意我没有优化你的模式，我只是展示了如何解决问题中提到的问题:
Note I did not optimize your pattern, I am just showing how to solve the problem stated in the question:
'~[0-9]+\s{0,10}\R?([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2}),([0-9]{1,3}) --> ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2}),([0-9]{1,3})\s{0,10}\R(.*\R?.*\R?.*)\R{2}~'
查看 PHP 演示
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