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  1. <?php
  2. $str = "MATERIALS,1,1,9999;1 4PL1 PB_Mel,,1,6,0.173,0.173,0.375,0,0.375,0,0,0,0,2,0,1,1\n".
  3.        "MATERIALS,1,1,9999;1 4PL1 PB_Mel,,1,6,0.173,0.173,0.375,0,0.375,0,0,0,0,2,0,1,1";
  4. print preg_replace('/^(MATERIALS,(?:[^,]*,){4}\d+)(?=,)/m', "$1.001", $str);
  5. ?>
Success #stdin #stdout 0.02s 13112KB
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stdin 
Standard input is empty
stdout 
MATERIALS,1,1,9999;1 4PL1 PB_Mel,,1.001,6,0.173,0.173,0.375,0,0.375,0,0,0,0,2,0,1,1
MATERIALS,1,1,9999;1 4PL1 PB_Mel,,1.001,6,0.173,0.173,0.375,0,0.375,0,0,0,0,2,0,1,1
https://ideone.com/je7Gbi
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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