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<?php $str="This is a test - That game is awesome (Cristiano Ronaldo is a great Soccer Player)"; //first explode it $e=explode(' ',$str); //loop to remove short words and special characters $out=array(); foreach ($e as $a){ $a=preg_replace("/[^A-Za-z0-9 ]/", '', $a); if(strlen($a)>2){ $out[]=$a; } } print_r($out);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => This [1] => test [2] => That [3] => game [4] => awesome [5] => Cristiano [6] => Ronaldo [7] => great [8] => Soccer [9] => Player )

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