Changes in json_encode Chinese transcoding in PHP5.4 [Make json understand Chinese better]_PHP tutorial

When doing json_encode before php5.4, Chinese will be encoded by unicode, and Chinese will be encoded and become unreadable, similar to the "u***" format, which will also increase the amount of transmitted data to a certain extent.

For example:

$str = 'Chinese';

echo json_encode($str);

//"u4e2du6587"

Start with php5.4

echo json_encode($str, JSON_UNESCAPED_UNICODE);

//"Chinese"

php5.4 makes json understand Chinese better!

Unicode transcoding was not performed before 5.4. There are 3 methods to deal with it:

The changes in json_encode Chinese transcoding in PHP5.4 make json understand Chinese better

But in fact, the first two methods will cause problems in some special circumstances. For example:

function myjson($code) {

$code = json_encode(urlencodeAry($code));

return urldecode($code);

}

function urlencodeAry($data) {

if(is_array($data)) {

foreach($data as $key=>$val) {

$data[$key] = urlencodeAry($val);

}

return $data;

} else {

return urlencode($data);

}

}

$test = array (

0 => '"Dalian Zhoushuizi Airport"→Renmin Road',

1 => 'Operating hours: 5:10～21:00 Ticket price: 16 yuan. Departure every 20 minutes. Departure at any time when full.',

);

/*

Encode and decode through regular json_encode|json_decode

[""u5927u8fdeu5468u6c34u5b50u673au573a"u2192u4ebau6c11u8def","u8fd0u8425u65f6

u95f4uff1a5uff1a10uff5e21uff1a00 u7968u4ef7uff1a16u5143 u53d1u8f66u95f4u969420

u5206u949fu4e00u73eduff0cu5ba2u6ee1u968fu65f6u53d1u8f66"]

array (

0 => '"Dalian Zhoushuizi Airport"→Renmin Road',

1 => 'Operating hours: 5:10～21:00 Ticket price: 16 yuan. Departure every 20 minutes. Departure at any time when full.',

)

*/

$test1 = json_encode($test);

$test2 = json_decode($test1, TRUE);

echo $test1;

echo PHP_EOL;

var_export($test2);

echo PHP_EOL;

/*

Encode and decode through myjson|json_decode, but an error json_last_error will be returned (JSON_ERROR_SYNTAX === 4),

Because ""Dalian Zhoushuizi Airport"→Renmin Road"

[""Dalian Zhoushuizi Airport"→Renmin Road","Operating hours: 5:10～21:00 Fare: 16 yuan, departures every 20 minutes, departures at any time when full"]

NULL

*/

$test1_1 = myjson($test);

$test2_1 = json_decode($test1_1, TRUE);

echo $test1_1;

echo PHP_EOL;

var_export($test2_1);

echo PHP_EOL;

/*

Use json_enco+pack|json_decode to encode and decode, ensuring that Chinese will not be encoded, but operating time data and fares will be missing

[""Dalian Zhoushuizi Airport"→Renmin Road","Operating hours::~: Fare: Yuan Departures every minute, departures at any time when full"]

array ( www.2cto.com

0 => '"Dalian Zhoushuizi Airport"→Renmin Road',

1 => 'Operating hours: :~: Fare: Yuan Departure every minute, departure at any time when full',

)

*/

function replaceUni($str) {

return preg_replace("#\u([0-9a-f]+)#ie", "iconv('UCS-2', 'UTF-8', pack('H4', '\1') )", $str);

}

$test1_2 = replaceUni(json_encode($test));

$test2_2 = json_decode($test1_2, TRUE);

echo $test1_2;

echo PHP_EOL;

var_export($test2_2);

echo PHP_EOL;

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