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run code in 150+ php & hhvm versions
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<?php error_reporting(-1); $data = array ( 'tram B' => array ( 0 => array ( 'name' => 'Ile Verte' , 'distance' => 298, 'stationID' => 762, ), 1 => array ( 'name' => 'La Tronche Hôpital' , 'distance' => 425, 'stationID' => 771, ), ), 16 => array ( 0 => array ( 'name' => 'Bastille', 'distance' => 531, 'stationID' => 397 ), 1 => array ( 'name' => 'Xavier Jouvin', 'distance' => 589, 'stationID' => 438, ), ), ); $data['tram B'][0]['name'] = iconv('UTF8', 'ISO-8859-1', $data['tram B'][0]['name']); $data['tram B'][1]['name'] = iconv('UTF8', 'ISO-8859-1', $data['tram B'][1]['name']); $data[16][0]['name'] = iconv('UTF8', 'ISO-8859-1', $data[16][0]['name']); $data[16][1]['name'] = iconv('UTF8', 'ISO-8859-1', $data[16][1]['name']); $fromEncoding = 'ISO-8859-1'; // This depends on the data array_walk_recursive($data, function (&$value, $key, $fromEncoding) { if (is_string($value)) { $value = iconv($fromEncoding, 'UTF-8', $value); } }, $fromEncoding); var_dump( mb_detect_order(), mb_detect_encoding($data['tram B'][1]['name']), mb_detect_encoding($data['tram B'][1]['name'], array('ISO-8859-1', 'UTF-8')), json_encode($data) );
Output for 5.3.0 - 5.5.34, 5.6.0 - 5.6.20, 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.5, 7.0.14 - 7.1.0
array(2) { [0]=> string(5) "ASCII" [1]=> string(5) "UTF-8" } string(5) "UTF-8" string(10) "ISO-8859-1" string(244) "{"tram B":[{"name":"Ile Verte","distance":298,"stationID":762},{"name":"La Tronche H\u00f4pital","distance":425,"stationID":771}],"16":[{"name":"Bastille","distance":531,"stationID":397},{"name":"Xavier Jouvin","distance":589,"stationID":438}]}"
Output for 7.0.6 - 7.0.9
Fatal error: Uncaught Error: Call to undefined function iconv() in /in/RoWs6:37 Stack trace: #0 {main} thrown in /in/RoWs6 on line 37
Process exited with code 255.
Output for 5.5.35 - 5.5.38, 5.6.21 - 5.6.24
Fatal error: Call to undefined function iconv() in /in/RoWs6 on line 37
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/RoWs6 on line 44
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/RoWs6 on line 44
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/RoWs6 on line 44
Process exited with code 255.