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<?php $re = '/\[[^][\d]*\K\d+(?:\.\d+)?(?=[^][]*])/'; $str = 'I have the following expression [+₪7.00], I wish to extract only 7.00 or 7.'; if (preg_match_all($re, $str, $matches)) { print_r($matches[0]); }
Output for 5.6.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Array ( [0] => 7.00 )

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