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  1. <?php
  2.  
  3. $string = "8x2.1 3x2";
  4. preg_match_all('/\d+\.\d+/', $string, $matches);
  5. print_r($matches[0]);
Success #stdin #stdout 0.01s 83072KB
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stdin
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Standard input is empty
stdout
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Array
(
    [0] => 2.1
)
https://ideone.com/fZMIf4
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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