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<?php $text="one #two three #four #five"; $parts = array_filter( explode(' ', $text), function($word) {return strpos($word,"#")===0;} ); print_r($parts);
Output for 7.0.0 - 7.0.31, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.3.25, 8.4.1 - 8.4.13
Array ( [1] => #two [3] => #four [4] => #five )

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