<?php
 
$csv = '"GR109     "," ",0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0," ","GRANT     ","M          ","W",0,0.0,0.0,0.0,0.0,0.0,0,0,0,0,0,0.0,0.0," ",0,0,0.0," "," "," ",2.42,0.0,0.0,0.0,0.0," "," "," "," "," "," ",0.0,0.0,0.0,0.0,0.0," "," "," "," ","SELF COL  ","16 P PR.  "," ","PLAIN     "," ","R/E1ROW   "," "," "," "," "," "," "," ","R/E1ROW   ","BEADED    "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," ","GRANT     ","GRANT     "," "," ","  "," ",0.0,"  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","  ","VAMP LNG - BLK. CARAVELLE P/S. QTR. LNG./ TNG.LINING - BLK. TORINO. (GREY ""TORINO"" FOR LIZARD.)","GR109 COMPLETE"';
$csv = preg_replace('/"((?=[^"]*)(?=(?=[^"]*)))"/', '$1', $csv);
echo $csv;

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