A summary of common Chinese garbled code problems in PHP MySQL stored data,
This article summarizes common Chinese garbled code problems in PHP MySQL stored data. Share it with everyone for your reference, the details are as follows:
Common reasons for Chinese garbled characters in PHP MySQL:
1. The encoding of the MYSQL database is utf8, which is inconsistent with the encoding format of the PHP web page, which will cause Chinese garbled characters in MYSQL.
2. When using MYSQL to create a table or select a field, the type set is not utf8, and the web page encoding is not utf8, which may also cause MYSQL Chinese garbled characters.
3. The character set of the PHP page is inconsistent with the encoding of the database.
4. PHP connects to the MYSQL database. The operation is to set the encoding specified by the statement and the page encoding. The PHP page encoding is inconsistent.
5. If the encoding of the HTML page submitted by the user is inconsistent with the encoding of the page displaying the data, it will definitely cause the PHP page to be garbled.
Methods to solve the problem of Chinese garbled characters:
1. Web page encoding settings. Generally, add attributes to the file header in the HTML code:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Guaranteed, the web page is encoded in "utf-8".
2. PHP code settings. Add the following code at the beginning of the php code:
header("Content-type: text/html;charset=utf-8");
The encoding method of the file required to be saved is UTF-8 (you can use EditPlus to open the settings, as shown below), which ensures that the file is also UTF-8 encoded.
3. The part that stores Chinese characters in the fields of the table in the database must be set to the utf8_general_ci type.
4. When PHP connects to the database for operation, it needs to set the field type of the operation to utf8. The setting method is as follows:
mysql_connect('localhost','user','password'); mysql_select_db('db'); mysql_query("set names utf8"); //**设置字符集*** mysql_query(要执行的sql语句);
I hope this article will be helpful to everyone in php programming design.

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。


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