从Ruby到PHP移植时的正则表达式问题

-1

我有两段代码似乎是彼此正确的翻译。不幸的是他们似乎返回不同的值。从Ruby到PHP移植时的正则表达式问题

代码在红宝石：

def separate(text,boundary = nil) 
    # returns array of strings and arrays containing all of the parts of the email 
    textList = [] 
    if !boundary #look in the email for "boundary= X" 
     text.scan(/(?<=boundary=).*/) do |bound| 
      textList = recursiveSplit(text,bound) 
      end 
    end 
    if boundary 
     textList = recursiveSplit(text,boundary) 
    end 
    puts textList.count 
    return textList 
end 


def recursiveSplit(chunk,boundary) 
    if chunk.is_a? String 
     searchString = "--" + boundary 
     ar = chunk.split(searchString) 
     return ar 
    elsif chunk.is_a? Array 
     chunk do |bit| 
      recursiveSplit(bit,boundary); 
     end 
    end 
end

代码在PHP：

function separate($text, $boundary="none"){ 
    #returns array of strings and arrays containing all the parts of the email 
    $textBlock = []; 
    if ($boundary == "none") { 
     preg_match_all('/(?<=boundary=).*/', $text, $matches); 
     $matches = $matches[0]; 
     foreach ($matches as $match) { 
      $textList = recursiveSplit($text,$match); 
     } 
    }else { 
     $textList = recursiveSplit(text,boundary); 
    } 
    var_dump($textList); 
    return$textList; 
} 

function recursiveSplit($chunk,$boundary){ 
    if (is_string($chunk)) { 
     $ar = preg_split("/--".$boundary."/", $chunk); 
     //$ar = explode($searchString, $chunk); 
     return $ar; 
    } 
    elseif (is_array($chunk)) { 
     foreach ($chunk as $bit) { 
      recursiveSplit($bit,$boundary); 
     } 
    } 
}

var_dump($textList)示出了长度为3的阵列，而textList.count => 4是为什么呢？

匿名的$文本例如：

MIME-Version: 1.0 
Received: by 10.112.170.40 with HTTP; Fri, 3 May 2013 05:08:21 -0700 (PDT) 
Date: Fri, 3 May 2013 08:08:21 -0400 
Delivered-To: [email protected] 
Message-ID: <[email protected]om> 
Subject: MiB 5/3/13 7:43AM (EST) 
From: Me <[email protected]> 
To: Someone <[email protected]> 
Content-Type: multipart/mixed; boundary=BNDRY1 

--BNDRY1 
Content-Type: multipart/alternative; boundary=BNDRY2 

--BNDRY2 
Content-Type: text/plain; charset=ISO-8859-1 

-TEXT STUFF HERE. SAYING THINGS 
ABOUT CERTAIN THINGS 

--BNDRY2 
Content-Type: text/html; charset=ISO-8859-1 

<div dir="ltr">-changed signature methods to conform more to working clinic header methods(please test/not testable in simulator)<div style>-confirmed that signature image is showing up in simulator. Awaiting further tests</div> 
<div style>-Modified findings spacing/buffer. See if you like it</div></div> 

--BNDRY2-- 
--BNDRY1 
Content-Type: application/zip; name="Make it Brief.ipa.zip" 
Content-Disposition: attachment; filename="Make it Brief.ipa.zip" 
Content-Transfer-Encoding: base64 
X-Attachment-Id: f_hg9biuno0 

<<FILE DATA>> 
--BNDRY1--

运行separate(text)的例子或任何Gmail才能重现 “查看原图” 电子邮件错误

来源

2013-05-20 Pinwheeler

在这里发布两个数组结果... –

'$ text'的例子是什么？ –

@HenriqueBarcelos简而言之，PHP数组中的第3个数组元素是ruby数组中的两个数组元素（3和4），尽管它们都是通过正则表达式拆分方法分割的。 – Pinwheeler

BINGO惊鼓想通了！

显然，在PHP中，为了改变一个循环内的变量包括变量，你有“&”

新增“&”，以前言可变和固定的一般递归错误，它运行平稳。

来源

2013-05-21 00:28:24 Pinwheeler

从Ruby到PHP移植时的正则表达式问题

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