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How to change the CHARACTER SET (and COLLATION) throughout a database?
...n in a table (Mysql). He set it up with Latin collation, when it should be UTF8, and now I have issues. Every record with Chinese and Japan character turn to ??? character.
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App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
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UrsAI2UDP 拓展用法
发送和接收文本 (URSAI2UDPTest)
发送和接收字节数组 (UDPBinaryTest)
« 返回首页 Iot 专题
拓展下载：
UrsAI2UDP.zip
demo下载：
CLOUD_REMOTE_VIDEO_CAR.aia
原作者开发动机
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What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
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utf8_general_ci is a very simple — and on Unicode, very broken — collation, one that gives incorrect results on general Unicode text. What it does is:
converts to Unicode normalization form D for canonical decompositio...
How to make MySQL handle UTF-8 properly
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Update:
Short answer - You should almost always be using the utf8mb4 charset and utf8mb4_unicode_ci collation.
To alter database:
ALTER DATABASE dbname CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
See:
Aaron's comment on this answer How to make MySQL handle UTF-8 properly
W...
How can I transform string to UTF-8 in C#?
...:
byte[] bytes = Encoding.Default.GetBytes(myString);
myString = Encoding.UTF8.GetString(bytes);
Another thing you may have to remember: If you are using Console.WriteLine to output some strings, then you should also write Console.OutputEncoding = System.Text.Encoding.UTF8;!!! Or all utf8 strings...
How to change collation of database, table, column?
The database is latin1_general_ci now and I want to change collation to utf8mb4_general_ci .
19 Answers
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Why would json_encode return an empty string
...ns probably a faulty response, some strings were probably not UTF-8
using utf8_encode() on those string solved my problem, but see note below
Here is a recursive function that can force convert to UTF-8 all the strings contained in an array:
function utf8ize($d) {
if (is_array($d)) {
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java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
...ne will see squares if you are not using fonts that support them.
MySQL's utf8 only supports basic multilingual plane, and you need to use utf8mb4 instead:
For a supplementary character, utf8 cannot store the character at all,
while utf8mb4 requires four bytes to store it. Since utf8 cannot s...
jquery中 html() text() val() innerText总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...读取和修改元素的HTML标签.text()用来读取或修改元素的纯文本内容.val()...jQuery封装的方法html,text,val
.html()用为读取和修改元素的HTML标签
.text()用来读取或修改元素的纯文本内容
.val()用来读取或修改表单元素的value值。
一看黑...
jquery判断文本字符串的长度 - 更多技术 - 清泛网 - 专注C/C++及内核技术
jquery判断文本字符串的长度$("#id").val().length;不解释。
var len = $("#id").val().length;
不解释。
jquery 字符串长度