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<?php $var = array( '#tag', 'text #tag text', 'text #tag', 'text#tag', ); $res = preg_grep('/#(\S{1,24}+)/u', '<$0>', $var); print_r($res);
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Warning: preg_grep() expects parameter 2 to be array, string given in /in/PTInb on line 8
Output for 4.3.11 - 5.1.6
Warning: preg_grep(): Second argument to preg_grep() should be an array in /in/PTInb on line 8
Output for 4.3.0 - 4.3.10
Warning: Second argument to preg_grep() should be an array in /in/PTInb on line 8