In this case I only use php to do this.
I have these .txt files to read:
File A
FA line 1  
FA line 2  
FA line 3  
File B
FB line 1  
FB line 2  
FB line 3  
-  
FB line 4  
FB line 5  
FB line 6  
-  
FB line 7  
FB line 8  
FB line 9  
'FA line 1' line from the 'FileA.txt' is matched with various lines of the 'FileB.txt' the way I know till which line is from the 'FA line 1' is that is separated with this '-'.
In the first example, 3 lines of 'FileB.txt' match one line of 'FileA.txt', but could be the case that 'FA line 1' match 3 lines, 'FA line 2' match 4 lines and 'FA line 3' match 2 lines like this:
File A
    FA line 1  
    FA line 2  
    FA line 3  
File B
    FB line 1  
    FB line 2  
    FB line 3  
    -  
    FB line 4  
    FB line 5  
    FB line 6  
    FB line 7  
    -
    FB line 8  
    FB line 9  
It could be separated with some other symbol like this one '_' for example, but is important that is separated to know how much lines are from each.
The goal is to put those 2 files in an associative array this way without the '-' because is only a separator (first example):
$ArrayResult[FA line 1] = "FB line 1  
                           FB line 2  
                           FB line 3";
$ArrayResult[FA line 2] = "FB line 4  
                           FB line 5  
                           FB line 6";
$ArrayResult[FA line 3] = "FB line 7  
                           FB line 8  
                           FB line 9";
or in the second example would be like this:
$ArrayResult[FA line 1] = "FB line 1  
                           FB line 2  
                           FB line 3";
$ArrayResult[FA line 2] = "FB line 4  
                           FB line 5  
                           FB line 6
                           FB line 7";
$ArrayResult[FA line 3] = "FB line 8  
                           FB line 9";
I tryed many times with different ways but couldn't achieve this.
This are some failed attempts that gave me different kind of errors or didn't work, also I don't know which way is more efficient:
First way:
        $rute1 = "FileA.txt";
        $rute2 = "FileB.txt";
        if(is_file($rute1) && is_file($rute2)){
            if(($fh1 = fopen($rute1, "r")) && ($fh2 = fopen($rute2, "r"))){
                $result = array();
                $aux1 = array();
                $aux2 = array();
                $line1="";
                while (!feof($fh1)){
                    $line1 = fgets($fh1);
                    array_push($aux1, $line1);
                }
                $linea2="";
                while (!feof($fh2)){
                        if(fgets($fh2)===("-")){
                            array_push($aux2, $line2);
                            $line2="";
                        } else {
                            $line2 .= fgets($fh2);
                        }
                }
            }
        }
fclose($fh1);
fclose($fh2);
    for ($i=0;$i=sizeof($aux1);$i++) {
        $Result[$aux1[$i]]=$aux2[$i];
    }
    print_r($result);
Second Way:
$rute1 = "FileA.txt";
$rute2 = "FileB.txt";
if(is_file($rute1) && is_file($rute2)){
    if(($fh1 = fopen($rute1, "r")) && ($fh2 = fopen($rute2, "r"))){
        $result = array();
        $pointer = 0;
        $line1="";
        while (!feof($fh1)){
            $line1 = fgets($fh1);
            $line2="";
            while (!feof($fh2)){
                fseek($fh2, $pointer);
                if(fgets($fh2)==="-"){
                    $pointer = ftell($fh2);
                    break;
                } else {
                    $line2 .= fgets($fh2);
                }
            }
            $result[$line1]=$line2;
        }
    }
    fclose($fh1);
    fclose($fh2);
}
print_r($Result);
Any ideas to solve this?
Thanks in advance for the help! :D
 
     
    