


The Chinese $_GET in the php address bar is garbled, and the usage of urlencode and urldecode is explained in detail
url encoding
Syntax: string urlencode(string str);
Return value: string
Function type: Encoding processing
For example:
url decoding
Restore URL encoded string.
Syntax: string urldecode(string str);
Return value: String
Function type: Encoding processing
For example:
Process and display the previously passed Chinese text
$DecodeStr=urldecode($_GET['name']);// You may not need to decode it, because the browser will automatically decode it for you
echo $DecodeStr;
?>
About the problem of Chinese garbled characters obtained from the URL using the get method in PHP
Use $gonghui = iconv("gb2312","UTF-8",$gonghui); another Method code
/**
* Multi-byte string encoding conversion function
*
* @param string str The string that needs to be encoded and converted
* @param string to_encoding specifies the conversion to a certain encoding, such as: gb2312, gbk, utf-8, etc.
* @param mixed from_encoding mixedly specifies the encoding of the original string, such as: specify JIS, eucjp-win, sjis-win mixed encoding at the same time
* @return string
string mb_convert_encoding ( string str, string to_encoding [, mixed from_encoding] )
**/
mb_convert_encoding function is PHP internal multi-byte string encoding conversion function, which can support almost all encodings when needed. PHP >= 4.0.6, 5 versions supported.
Get reg.php?gh=XX directly;
// Union login parameters
$gonghui = $_GET['gh'];
The $gonghui obtained is gb2312 encoded and output to utf-8 webpage to display garbled characters
changed to
//Union login parameters
$gonghui = $_GET['gh'];
$gonghui = mb_convert_encoding($gonghui, "UTF-8", "gb2312");
It will display normally
Convert the entire page
This method is suitable for all coding environments. In this way, all character sets other than the first 128 characters (display characters) are represented by NCR (Numeric character reference, such as "Chinese characters" will be converted into "Chinese characters"). Such encoding can be used on the page in any encoding environment. Display normally.
Add the following three lines of code to the head of the php file:
mb_internal_encoding("gb2312"); // gb2312 here is the original encoding of your website
mb_http_output("HTML-ENTITIES");
ob_start('mb_output_handler');
Using the mb_convert_encoding function requires enabling PHP's mbstring (multi-byte string) extension.
If the mbstring extension of PHP is not enabled, you need to make the following settings to allow PHP to support the extension.
1. Windows server environment
Edit the php.ini file, remove the ; in front of extension=php_mbstring.dll, and restart the web server.
2. Linux server environment
Add the --enable-mbstring=cn compilation parameter when compiling the configuration, and then compile and install PHP.
The third reference method from other netizens:
//Method 1 urldecode
$url = 'aaa.php?region='.urldecode("Sichuan Province");
aaa
//Method 2 base64_encode
$test="Sichuan Province";
$test1=base64_encode($test);
echo 'aaa ';
?>
Another page is decoded using base64_decode
base64_decode($region);
//Method 3 makes the server support Chinese
[root@dhcp ~]# locale
lang=zh_cn.utf-8
lc_ctype="zh_cn.utf-8"
lc_numeric="zh_cn.utf-8"
lc_time=c
lc_collate=c
lc_monetary ="zh_cn.utf-8"
lc_messages="zh_cn.utf-8"
lc_paper="zh_cn.utf-8"
lc_name="zh_cn.utf-8"
lc_address=" zh_cn.utf-8"
lc_telephone="zh_cn.utf-8"
lc_measurement="zh_cn.utf-8"
lc_identification="zh_cn.utf-8"
lc_all=
[root@dhcp ~]#

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。

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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