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<?php
 
$s = "..d.....12.3..d.e!";
if (preg_match('~\d+(?:\.\d+)?~', $s, $m)) {
    echo $m[0];
}

Success #stdin #stdout 0.02s 23616KB

stdin

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Standard input is empty

stdout

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12.3

https://ideone.com/fPgHSx

language:

PHP (php 7.3.5)

created:

visibility:

public

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