Summary of changes in json_encode Chinese transcoding in PHP5.4

Summary of changes in json_encode Chinese transcoding in PHP5.4_PHP tutorial

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Release： 2016-07-21 15:13:22

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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:

Copy code The code is as follows:

 
$str = 'Chinese' ; 
echo json_encode($str); 
//"u4e2du6587" 
Starting 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 three methods to deal with it:
But in fact, the first two methods will cause problems in some special cases. For example:

Copy code The code is as follows:

 
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 Fare: 16 yuan. Departs every 20 minutes. Departs at any time when full. 
); 
/* 
Use the regular json_encode|json_decode to encode and decode 
[ ""u5927u8fdeu5468u6c34u5b50u673au573a"u2192u4ebau6c11u8def","u8fd0u8425u65f6 
u95f4uff1a5uff1a10uff5e21uff1a00 u7968u4ef7uff1a16u5143 u53d 1u8f66u95f4u969420 
u5206u949fu4e00u73eduff0cu5ba2u6ee1u968fu65f6u53d1u8f66"] 
array ( 
0 => '"Dalian Zhoushuizi Airport"→Renmin Road', 
1 => ; 'Operating hours: 5:10～21:00 Fare: 16 yuan. Departs every 20 minutes. Departs 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 Departure every 20 minutes, departure 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. Departs every minute. Departs at any time when full."] 
array ( 
0 => '"Dalian Zhoushuizi Airport"→Renmin Road', 
1 => 'Operating hours: :~: Fare: Yuan. Departs every minute and leaves 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; 