PHP爆炸的字符串，但對待引號的話作爲一個單詞

Question

我怎麼能爆炸以下字符串：

Lorem ipsum "dolor sit amet" consectetur "adipiscing elit" dolor 

到

array("Lorem", "ipsum", "dolor sit amet", "consectetur", "adipiscing elit", "dolor") 

所以，在報價單中的文本作爲被處理一個字。

下面是我對現在：

$mytext = "Lorem ipsum %22dolor sit amet%22 consectetur %22adipiscing elit%22 dolor" 
$noquotes = str_replace("%22", "", $mytext"); 
$newarray = explode(" ", $noquotes); 

，但我的代碼將每個字到一個數組。我如何在引號內將單詞作爲一個單詞處理？

Answer 1

你可以使用一個preg_match_all(...)：

$text = 'Lorem ipsum "dolor sit amet" consectetur "adipiscing \\"elit" dolor'; 
preg_match_all('/"(?:\\\\.|[^\\\\"])*"|\S+/', $text, $matches); 
print_r($matches); 

這將產生：

Array 
(
    [0] => Array 
     (
      [0] => Lorem 
      [1] => ipsum 
      [2] => "dolor sit amet" 
      [3] => consectetur 
      [4] => "adipiscing \"elit" 
      [5] => dolor 
     ) 

) 

正如你所看到的，這也說明了引號的字符串內轉義引號。

編輯

的簡短解釋：

"   # match the character '"' 
(?:   # start non-capture group 1 
    \\  # match the character '\' 
    .   # match any character except line breaks 
    |   # OR 
    [^\\"] # match any character except '\' and '"' 
)*   # end non-capture group 1 and repeat it zero or more times 
"   # match the character '"' 
|   # OR 
\S+   # match a non-whitespace character: [^\s] and repeat it one or more times 

而且在匹配%22，而不是雙引號的情況下，你會怎麼做：

preg_match_all('/%22(?:\\\\.|(?!%22).)*%22|\S+/', $text, $matches); 

Answer 2

這將更加用str_getcsv()更容易。

$test = 'Lorem ipsum "dolor sit amet" consectetur "adipiscing elit" dolor'; 
var_dump(str_getcsv($test, ' ')); 

給你

array(6) { 
    [0]=> 
    string(5) "Lorem" 
    [1]=> 
    string(5) "ipsum" 
    [2]=> 
    string(14) "dolor sit amet" 
    [3]=> 
    string(11) "consectetur" 
    [4]=> 
    string(15) "adipiscing elit" 
    [5]=> 
    string(5) "dolor" 
} 

Answer 3

您也可以嘗試這種多爆炸功能

function multiexplode ($delimiters,$string) 
{ 

$ready = str_replace($delimiters, $delimiters[0], $string); 
$launch = explode($delimiters[0], $ready); 
return $launch; 
} 

$text = "here is a sample: this text, and this will be exploded. this also | this one too :)"; 
$exploded = multiexplode(array(",",".","|",":"),$text); 

print_r($exploded); 

Answer 4

在某些情況下鮮爲人知的token_get_all()可能證明是有用的：

$tokens = token_get_all("<?php $text ?>"); 
$separator = ' '; 
$items = array(); 
$item = ""; 
$last = count($tokens) - 1; 
foreach($tokens as $index => $token) { 
    if($index != 0 && $index != $last) { 
     if(count($token) == 3) { 
      if($token[0] == T_CONSTANT_ENCAPSED_STRING) { 
       $token = substr($token[1], 1, -1); 
      } else { 
       $token = $token[1]; 
      } 
     } 
     if($token == $separator) { 
      $items[] = $item; 
      $item = ""; 
     } else { 
      $item .= $token; 
     } 
    } 
} 

Resul TS：

Array 
(
    [0] => Lorem 
    [1] => ipsum 
    [2] => dolor sit amet 
    [3] => consectetur 
    [4] => adipiscing elit 
    [5] => dolor 
) 

Answer 5

我來到這裏有一個類似的複雜的字符串分割的問題，但沒有答案在這裏也正是我想要的 - 所以我寫了我自己。

我在這裏發佈它，以防萬一它對別人有幫助。

這可能是一種非常緩慢且低效的方式 - 但它適用於我。

function explode_adv($openers, $closers, $togglers, $delimiters, $str) 
{ 
    $chars = str_split($str); 
    $parts = []; 
    $nextpart = ""; 
    $toggle_states = array_fill_keys($togglers, false); // true = now inside, false = now outside 
    $depth = 0; 
    foreach($chars as $char) 
    { 
     if(in_array($char, $openers)) 
      $depth++; 
     elseif(in_array($char, $closers)) 
      $depth--; 
     elseif(in_array($char, $togglers)) 
     { 
      if($toggle_states[$char]) 
       $depth--; // we are inside a toggle block, leave it and decrease the depth 
      else 
       // we are outside a toggle block, enter it and increase the depth 
       $depth++; 

      // invert the toggle block state 
      $toggle_states[$char] = !$toggle_states[$char]; 
     } 
     else 
      $nextpart .= $char; 

     if($depth < 0) $depth = 0; 

     if(in_array($char, $delimiters) && 
      $depth == 0 && 
      !in_array($char, $closers)) 
     { 
      $parts[] = substr($nextpart, 0, -1); 
      $nextpart = ""; 
     } 
    } 
    if(strlen($nextpart) > 0) 
     $parts[] = $nextpart; 

    return $parts; 
} 

用法如下。explode_adv需要5個參數：

1. 打開塊的字符數組 - 例如， [，(等
2. 該關閉塊字符數組 - 例如],)等
3. 切換塊的字符數組 - 例如， ",'等
4. 應該導致拆分到下一部分的字符數組。
5. 串去努力。

此方法可能存在缺陷 - 歡迎編輯。