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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) );

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