如何将变量搜索限制为单行文本？

Question

考虑到这个示例文本：

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个值，并将其存储在4

组我使用这样的：（Demo）

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

但这只返回grupo3后面的前4个逗号分隔值。

我需要生成该数组结构：

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

你可以尝试以下方法：

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

到底/m指示multi-line和$的标志，指示end of line之前。 Demo

编辑：为了得到每4个元素只能形成第三段

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

Demo

，你可以得到所需的输出在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); 

输出会是这样的：

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

请原谅这个答案的迟到。如果这个页面没有被搁置，这是一个干净/直接的解决方案的综合答案。这是一个完善的解决方案，因为我不知道如何生成/访问输入数据。

输入：

$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()以提取单个线，然后使用explode()拆分的 “逗号空间” 字符串，然后使用array_chunk()存储在一个包含4个元素的5个子阵列中。

该模式的目标行号为grupo3,，然后使用\K重新启动完整匹配，然后贪婪地匹配每个非换行符并在该行的最后一个逗号之前停止。积极lookahead (?=,)不存储完整字符串匹配中的最终逗号。

（Pattern Demo）

我的方法不保留任何开头和结尾的空格，只值本身。

输出：

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：如果搜索词（$needle）是是动态的，你可以使用这样的事情来达到相同的结果：（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'; 
    } 
*/