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  1. <?php
  2.  
  3. $string  = '$quant*($c_paper+$c_color)+$quant*$c_lam+$quant*$c_big+$c_cut';
  4. $pattern = '/\$([a-z\_]+)/';
  5. echo preg_match_all($pattern, $string, $matches), PHP_EOL;
  6. print_r($matches[1]);
Success #stdin #stdout 0.02s 24192KB
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Standard input is empty
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8
Array
(
    [0] => quant
    [1] => c_paper
    [2] => c_color
    [3] => quant
    [4] => c_lam
    [5] => quant
    [6] => c_big
    [7] => c_cut
)
https://ideone.com/yJLESx
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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