length string php

Chinese websites generally choose two types of code: gbk/gb2312 or Utf-8. Each Chinese character in the GBK encoding occupies 2 bytes, as an example: $zhStr = ‘您好，中国！’;echo strlen($zhStr// 输出：12 utf-8编码下每个中文字符所占字节为3，例： $zhStr = ‘您好，中国！’;echo strlen(

Php performance optimization: using isset () to determine the string length is faster than strlen. How can I determine the length of a string in php? Many people think of strlen () mb_strlen () functions first. However, in terms of program

Common string operation functions in PHP development, and string functions in php development. Common string operation functions in PHP Development. string function 1 in php Development. concatenating string concatenation strings is one of the most

Php functions (encryption and decryption, random string, truncated string length, forced download, etc) Function encryptdecrypt ($ key, $ string, $ decrypt ){ If ($ decrypt ){ $ Decrypted = rtrim (mcrypt_decrypt

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PHP development of common string manipulation functions, PHP development of String functions 1, stitching strings The concatenation of strings is one of the most commonly used string operations, and in PHP there are three ways to stitch strings,

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Php string length function. Php string length function. in php, two functions are used to test the string length. one is strlen, and the other is supported by the previous one before mb_strlen by default. the other one needs to enable a plug-in,

Three ways to get post data from PHP PHP image plus watermark source code One of the simplest examples of Php+ajax+json PHP Chinese Pinyin Source code PHP iterates through directories, generates MD5 values for each file in the directory, and writes

function Encryptdecrypt ($key, $string, $decrypt) { if ($decrypt) { $decrypted = RTrim (Mcrypt_decrypt (mcrypt_rijndael_256, MD5 ($key), Base64_decode ($string), MCRYPT_MODE_CBC, MD5 (MD5 ($ Key)), "12"); return $decrypted;