如何將變量搜索限制爲單行文本？

Question

考慮到這個示例文本：

grupo1, tiago1A, bola1A, mola1A, tijolo1A, pedro1B, bola1B, mola1B, tijolo1B, raimundo1C, bola1C, mola1C, tijolo1C, joao1D, bola1D, mola1D, tijolo1D, felipe1E, bola1E, mola1E, tijolo1E, 

grupo2, tiago2A, bola2A, mola2A, tijolo2A, pedro2B, bola2B, mola2B, tijolo2B, raimundo2C, bola2C, mola2C, tijolo2C, joao2D, bola2D, mola2D, tijolo2D, felipe2E, bola2E, mola2E, tijolo2E, 

grupo3, tiago3A, bola3A, mola3A, tijolo3A, pedro3B, bola3B, mola3B, tijolo3B, raimundo3C, bola3C, mola3C, tijolo3C, joao3D, bola3D, mola3D, tijolo3D, felipe3E, bola3E, mola3E, tijolo3E, 

grupo4, tiago4A, bola4A, mola4A, tijolo4A, pedro4B, bola4B, mola4B, tijolo4B, raimundo4C, bola4C, mola4C, tijolo4C, joao4D, bola4D, mola4D, tijolo4D, felipe4E, bola4E, mola4E, tijolo4E, 

grupo5, tiago5A, bola5A, mola5A, tijolo5A, pedro5B, bola5B, mola5B, tijolo5B, raimundo5C, bola5C, mola5C, tijolo5C, joao5D, bola5D, mola5D, tijolo5D, felipe5E, bola5E, mola5E, tijolo5E, 

我想捕捉遵循grupo3的20個值，並將其存儲在4

組我使用這樣的：（Demo）

/grupo3,((.*?),(.*?),(.*?),(.*?)),/ 

但這隻返回grupo3後面的前4個逗號分隔值。

我需要生成該數組結構：

Match 1 
Group 1 tiago3A 
Group 2 bola3A 
Group 3 mola3A 
Group 4 tijolo3A 

Match 2 
Group 1 pedro3B 
Group 2 bola3B 
Group 3 mola3B 
Group 4 tijolo3B 

Match 3 
Group 1 raimundo3C 
Group 2 bola3C 
Group 3 mola3C 
Group 4 tijolo3C 

Match 4 
Group 1 joao3D 
Group 2 bola3D 
Group 3 mola3D 
Group 4 tijolo3D 

Match 5 
Group 1 felipe3E 
Group 2 bola3E 
Group 3 mola3E 
Group 4 tijolo3E 

Answer 1

你可以嘗試以下方法：

/,(.*?),(.*?),(.*?),(.*?),.*?$/m

到底/m指示multi-line和$的標誌，指示end of line之前。 Demo

編輯：爲了得到每4個元素只能形成第三段

/grupo3,((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)),/ 

Demo

，你可以得到所需的輸出在PHP中，如：

preg_match('/grupo3,((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)), ((.*?),(.*?),(.*?),(.*?)),/', $str, $matches); 

$groups = []; 
unset($matches[0]); 
$matches = array_values($matches); 
$count = count($matches); 
$j=0; 
for($i=1;$i<$count;$i++) 
{ 
    if($i%5 == 0) 
    { 
     $j++; 
     continue; 
    } 
    $groups[$j][] = $matches[$i]; 

} 

var_dump($groups); 

輸出會是這樣的：

array (size=5) 
    0 => 
    array (size=4) 
     0 => string ' tiago3A' (length=8) 
     1 => string ' bola3A' (length=7) 
     2 => string ' mola3A' (length=7) 
     3 => string ' tijolo3A' (length=9) 
    1 => 
    array (size=4) 
     0 => string 'pedro3B' (length=7) 
     1 => string ' bola3B' (length=7) 
     2 => string ' mola3B' (length=7) 
     3 => string ' tijolo3B' (length=9) 
    2 => 
    array (size=4) 
     0 => string 'raimundo3C' (length=10) 
     1 => string ' bola3C' (length=7) 
     2 => string ' mola3C' (length=7) 
     3 => string ' tijolo3C' (length=9) 
    3 => 
    array (size=4) 
     0 => string 'joao3D' (length=6) 
     1 => string ' bola3D' (length=7) 
     2 => string ' mola3D' (length=7) 
     3 => string ' tijolo3D' (length=9) 
    4 => 
    array (size=4) 
     0 => string 'felipe3E' (length=8) 
     1 => string ' bola3E' (length=7) 
     2 => string ' mola3E' (length=7) 
     3 => string 'tijolo3E' (length=0) 

Answer 2

請原諒這個答案的遲到。如果這個頁面沒有被擱置，這是一個乾淨/直接的解決方案的綜合答案。這是一個完善的解決方案，因爲我不知道如何生成/訪問輸入數據。

輸入：

$text='grupo1, tiago1A, bola1A, mola1A, tijolo1A, pedro1B, bola1B, mola1B, tijolo1B, raimundo1C, bola1C, mola1C, tijolo1C, joao1D, bola1D, mola1D, tijolo1D, felipe1E, bola1E, mola1E, tijolo1E, 

grupo2, tiago2A, bola2A, mola2A, tijolo2A, pedro2B, bola2B, mola2B, tijolo2B, raimundo2C, bola2C, mola2C, tijolo2C, joao2D, bola2D, mola2D, tijolo2D, felipe2E, bola2E, mola2E, tijolo2E, 

grupo3, tiago3A, bola3A, mola3A, tijolo3A, pedro3B, bola3B, mola3B, tijolo3B, raimundo3C, bola3C, mola3C, tijolo3C, joao3D, bola3D, mola3D, tijolo3D, felipe3E, bola3E, mola3E, tijolo3E, 

grupo4, tiago4A, bola4A, mola4A, tijolo4A, pedro4B, bola4B, mola4B, tijolo4B, raimundo4C, bola4C, mola4C, tijolo4C, joao4D, bola4D, mola4D, tijolo4D, felipe4E, bola4E, mola4E, tijolo4E, 

grupo5, tiago5A, bola5A, mola5A, tijolo5A, pedro5B, bola5B, mola5B, tijolo5B, raimundo5C, bola5C, mola5C, tijolo5C, joao5D, bola5D, mola5D, tijolo5D, felipe5E, bola5E, mola5E, tijolo5E,'; 

的方法：（PHP Demo）

var_export(preg_match('/^grupo3, \K.*(?=,)/m',$text,$out)?array_chunk(explode(', ',$out[0]),4):'fail'); 

使用preg_match()以提取單個線，然後使用explode()拆分的 「逗號空間」 字符串，然後使用array_chunk()存儲在一個包含4個元素的5個子陣列中。

該模式的目標行號爲grupo3,，然後使用\K重新啓動完整匹配，然後貪婪地匹配每個非換行符並在該行的最後一個逗號之前停止。積極lookahead (?=,)不存儲完整字符串匹配中的最終逗號。

（Pattern Demo）

我的方法不保留任何開頭和結尾的空格，只值本身。

輸出：

array (
    0 => 
    array (
    0 => 'tiago3A', 
    1 => 'bola3A', 
    2 => 'mola3A', 
    3 => 'tijolo3A', 
), 
    1 => 
    array (
    0 => 'pedro3B', 
    1 => 'bola3B', 
    2 => 'mola3B', 
    3 => 'tijolo3B', 
), 
    2 => 
    array (
    0 => 'raimundo3C', 
    1 => 'bola3C', 
    2 => 'mola3C', 
    3 => 'tijolo3C', 
), 
    3 => 
    array (
    0 => 'joao3D', 
    1 => 'bola3D', 
    2 => 'mola3D', 
    3 => 'tijolo3D', 
), 
    4 => 
    array (
    0 => 'felipe3E', 
    1 => 'bola3E', 
    2 => 'mola3E', 
    3 => 'tijolo3E', 
), 
) 

附：如果搜索詞（$needle）是是動態的，你可以使用這樣的事情來達到相同的結果：（PHP Demo）

$needle='grupo3'; 
// if the needle may include any regex-sensitive characters, use preg_quote($needle,'/') at $needle 
var_export(preg_match('/^'.$needle.', \K.*(?=,)/m',$text,$out)?array_chunk(explode(', ',$out[0]),4):'fail'); 

/* or this is equivalent... 
    if(preg_match('/^'.$needle.', \K.*(?=,)/m',$text,$out)){ 
     $singles=explode(', ',$out[0]); 
     $groups=array_chunk($singles,4); 
     var_export($groups); 
    }else{ 
     echo 'fail'; 
    } 
*/