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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 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: preg_grep(): Argument #2 ($array) must be of type array, string given in /in/PTInb:8 Stack trace: #0 /in/PTInb(8): preg_grep('/#(\\S{1,24}+)/u', '<$0>', Array) #1 {main} thrown in /in/PTInb on line 8
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: preg_grep() expects parameter 2 to be array, string given in /in/PTInb on line 8
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 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

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