求正则

Question

如果这样呢？
$Array[0][1] => [One: a]
$Array[0][2] => [Two: b]
$Array[0][3] => [Three: ccc]
$Array[1][1] => [Three: zzz]
$Array[1][2] => [Two: y]用preg_match_all能否做到？排序是小事，最重要把第一维准确分出来

Answer 1

结果是出来了,但感觉不严密,仍未完全明白你的意思
$str="[One: a]
[Two: b]
[Three: ccc][Three: zzz]
[Two: y]";preg_match_all("/\[(One|Two|Three):[^\]]+\]/m",$str,$matches);
print_r(array_chunk($matches[0],3));
非得preg_match_all吗

Answer 2

这不难吧#\[(.+?):.+?\](?=(?:.*?\r\n\r\n.*?(\[\\1:.+?\])|.*?\r\n\r\n))#is

Answer 3

$Array[0][0]="[One: a]"
$Array[0][1]="[Two: b]"
$Array[0][2]="[Three: ccc]"
$Array[1][0]="One"
$Array[1][1]="Two"
$Array[1][2]="Three"
$Array[2][0]=""
$Array[2][1]="[Two: y]"
$Array[2][2]="[Three: zzz]"
这是结果，调试环境是php5.14

Answer 4

preg边界符而已，与系统有什么关系？

Answer 5

我这边运行不出你说的结果，php5.0

Answer 6

$str="[One: a]\r\n[Two: b]\r\n[Three: ccc]\r\n\r\n[Three: zzz]\r\n[Two: y]";
$pn="#\[(.+?):.+?\](?=(?:.*?\r\n\r\n.*?(\[\\1:.+?\])|.*?\r\n\r\n))#is";
preg_match_all($pn,$str,$ar,PREG_OFFSET_CAPTURE);
print_r($ar);

Answer 7

执行结果:
Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [0] => [One: a]
                    [1] => 0
                )            [1] => Array
                (
                    [0] => [Two: b]
                    [1] => 10
                )            [2] => Array
                (
                    [0] => [Three: ccc]
                    [1] => 20
                )        )    [1] => Array
        (
            [0] => Array
                (
                    [0] => One
                    [1] => 1
                )            [1] => Array
                (
                    [0] => Two
                    [1] => 11
                )            [2] => Array
                (
                    [0] => Three
                    [1] => 21
                )        )    [2] => Array
        (
            [0] => 
            [1] => Array
                (
                    [0] => [Two: y]
                    [1] => 50
                )            [2] => Array
                (
                    [0] => [Three: zzz]
                    [1] => 36
                )        ))

Answer 8

我是这个，也没报错
PHP Version 5.1.2pcre
PCRE (Perl Compatible Regular Expressions) Support  enabled
PCRE Library Version  6.2 01-Aug-2005
Array
(
    [0] => Array
        (
        )    [1] => Array
        (
        )    [2] => Array
        (
        ))