In projects, we sometimes need to use PHP to encrypt specific information, that is, to generate an encrypted string through the encryption algorithm. the encrypted string can be decrypted through the decryption algorithm, to facilitate the program
Php Chinese characters and hexadecimal encoding conversion methods
// Convert Chinese characters to hexadecimal encoding
Function hexencode ($ s ){
Return preg_replace ('/(.) /es ', "str_pad (dechex (ord ('
Analysis on the conversion principle of Chinese characters in PHP. I. Analysis of the conversion principle of Chinese characters to decimal characters a Chinese character in GBK encoding is composed of two characters. the method to obtain a Chinese
Php string truncation problem. However, when English and Chinese characters are mixed, the following problem occurs: if there is such a string $ str, this is a string; to intercept the first 10 characters of the string, if (strle) is used, the
Echo mb_substr ("My ABC's name is Showan",0,7,'utf-8'). " br>"; // 0,9,'utf-8'); // My ABC'sWhere the third parameter in MB_SUBSTR represents the number of characters, the third parameter in the Mb_strcut function represents the number of
PHP has an extremely powerful image processing capability, which makes it easy to dynamically generate web images.
is a simple counter made using PHP.
1. General ideas:
Record the number of previous visits in a text file, and when the page is
The principle is to convert Chinese characters into hexadecimal and string combinations according to some rules, to realize character encoding and encoding, to ensure the integrity and compatibility of characters in the process of URL data
As we all know, the native function substr of php does not support intercepting Chinese strings. The following code provides a variety of methods to intercept php Chinese strings. 1. intercept the GB2312 Chinese string & lt ;? Php // intercept the
Php Chinese string truncation question ??? Because the use of the substr () function to intercept Chinese strings will cause problems, I found a function online, as follows: PHPcode Chinese string intercept function functioncut_str ($ string, $
Common functions extracted from phpcmsv9 *** return the strings or arrays processed by addslashes * @ param $ string or strings to be processed * @ returnmixed * functionnew_addslashes ($ string) {?? If (! Is_array ($ string) returnaddslashes ($
PrefaceLast night, a lab teacher @ me on the meager pages and sent me some basic php interview questions. Here I posted my answers.
Question
(1) Write a function to get the file Suffix of the URL, such as "http://www.feiyan.info/test.php? C = class &
Topic Description: Give the train path, and whether each path is a hard seat or a soft sleeper, and give the discomfort of the hard seat and the soft sleeper, and find the minimum discomfort from the start point to the end point.
Idea: First, find
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