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<?php preg_match_all('/[\x{0080}-\x{ffff}]/u', 'café åäö', $matches, PREG_OFFSET_CAPTURE); var_dump($matches, json_encode('é'));
based on aesao
Output for 5.2.0 - 7.2.0
array(1) { [0]=> array(4) { [0]=> array(2) { [0]=> string(2) "é" [1]=> int(3) } [1]=> array(2) { [0]=> string(2) "å" [1]=> int(6) } [2]=> array(2) { [0]=> string(2) "ä" [1]=> int(8) } [3]=> array(2) { [0]=> string(2) "ö" [1]=> int(10) } } } string(8) ""\u00e9""
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/LhPSv on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/LhPSv on line 5
Process exited with code 255.
Output for 4.3.3 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/LhPSv on line 5
Process exited with code 255.
Output for 4.3.2
Warning: Wrong value for parameter 4 in call to preg_match_all() in /in/LhPSv on line 4 Fatal error: Call to undefined function: json_encode() in /in/LhPSv on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Warning: Wrong value for parameter 4 in call to preg_match_all() in /in/LhPSv on line 4 Fatal error: Call to undefined function: json_encode() in /in/LhPSv on line 5