match data from row to another row in csv file using php? - php

Question

I am newbie in php. Can this be possible to be done?? the script role is to find the match in another row but not on the same column...
the .csv file
**first row** **second row** **third row**
This is for NNMM NN/MM#000-45NNMM;1 2001
AA/BB#000-45AABB;2 ----- 2002
NN/MM#000-45NNMM;2 ----- 2003
This is for XXYY XX/YY#000-45XXYY;1 2004
LL/QQ#000-45LLQQ;2 ----- 2005
WW/KK#000-45WWKK;2 ----- 2006
CC/DD#000-45CCDD;2 ----- 2005
PP/SS#000-45PPSS;2 ----- 2006
This is for AABB AA/BB#000-45AABB;1 2007
XX/YY#000-45XXYY;2 ----- 2008
This is for PPSS PP/SS#000-45PPSS;1 2009
This is for CCDD CC/DD#000-45CCDD;1 2010
in first row: there are 5 fields the last char in string is "2".(i.e.AA/BB#000-45AABB;2)
in second row: there are 5 fields the last char in string is "1".(i.e.AA/BB#000-45AABB;1)
now i want to do a matching script where the first row find the match in 2ndrow.. and display the data from first row which the match is found... hope it makes sense...
desired output
This is for NNMM NN/MM#000-45NNMM;1 2001
This is for XXYY XX/YY#000-45XXYY;1 2004
This is for AABB AA/BB#000-45AABB;1 2007
This is for PPSS PP/SS#000-45PPSS;1 2009
This is for CCDD CC/DD#000-45CCDD;1 2010
i have started a script but stuck working out with the logic...
$file = fopen('sample.csv', 'r');
echo "<table style='border: 2px solid black; text-align:left'>";
while (($line = fgetcsv($file)) !== FALSE) {
list( $row1, $row2, $row3) = $line;
echo "<tr>";
echo "<td>$row1</td>";
echo"<td>$row2</td>";
echo "<td>$row3</td>";
echo "</tr>";
}
echo "</table>";

Answer 1

It is propably not best tool for that, but I tried to do it with regex, and I know it is ugly, but try it out:
(?|(?:([A-Z]{2}\/[A-Z]{2}#\d{3}-\d{2}([A-Z]{4});)(1))(?=(?:.|\n)+?(\d{4})(?:.|\n)+\1(?:2))|(?:([A-Z]{2}\/[A-Z]{2}#\d{3}-\d{2}([A-Z]{4});)2)(?=(?:.|\n)+(?:\1(1))(?:.|n)+?(\d{4})))
DEMO
Relevant data is in groups, so you can use something like: "This is for $2\t$1$3\t$4" to get data you want. In substitution part of my demo, you can see the output (but it only replace matched parts and the the rest of umatched text is still there, but it is just to see how such output could look).

Answer 2

use a do while() instead of while sorry can't write the code for you
and you have to use if statements also if ($row1 == $row1) {then do this}