php get garbled solution: 1. Use the iconv function to convert the string according to the required character encoding; 2. Use mb_convert_encoding to convert the encoding.
The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.
How to solve the garbled problem of php get? ?
The reasons and solutions for PHP receiving garbled Chinese parameters in GET
Option 1:
$str = iconv("gb2312","utf-8",$str);
Option 2:
mb_convert_encoding($str, "utf-8", "gb2312");
Related introduction:
iconv : Convert the string according to the required character encoding
Description
iconv(string $in_charset, string $out_charset, string $str): string
Convert the string str from in_charset to out_charset.
Parameters
in_charset
Input character set.
out_charset
Output character set.
If you add the string //TRANSLIT after out_charset, the transliteration function will be enabled. This means that when a character cannot be represented by the target character set, it can be approximated by one or more similar characters. If you add the string //IGNORE, characters that cannot be expressed in the target character set will be silently discarded. Otherwise, an E_NOTICE is caused and false is returned.
WARNING
//TRANSLIT operation details are highly dependent on the system's iconv() implementation (see ICONV_IMPL). It is reported that the implementation on some systems will directly ignore //TRANSLIT, so the conversion may fail and out_charset will be unqualified.
str
The string to be converted.
Return value
Returns the converted string, or returns false on failure.
php mb_convert_encoding: php built-in encoding conversion method.
Method prototype: string mb_convert_encoding ( string $str , string $to_encoding [, mixed $from_encoding = mb_internal_encoding() ] )
Convert the character encoding of string type str from optional from_encoding to to_encoding.
Recommended learning: "PHP Video Tutorial"
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php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($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。

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。

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。

查找方法:1、用strpos(),语法“strpos("字符串值","查找子串")+1”;2、用stripos(),语法“strpos("字符串值","查找子串")+1”。因为字符串是从0开始计数的,因此两个函数获取的位置需要进行加1处理。


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