strlen

Hello here it is the problem: when i get to the $_POST latin string strilen() works perfectly, but when i get cyrillic string strlen() doubles its value here is the code: $word = $_POST['word']; echo strlen($word) . '<br>'; //input: abc -> returns 3, input: абв -> returns 6 var_dump($word); //input: abc -> returns string 'abc' (length=3), input: абв -> returns string 'абв' (length=6) Do you have some ideas?! strlen does not double anything, it simply reports what the situation is. Specifically, it reports how many bytes -- and not how many characters -- make up the string. That is because

Ok I am checking that a string is at least 4 characters long and 25 or less characters short I tried to use strlen like this $userNameSignupLength = strlen($userNameSignup); else if($userNameSignupLength<4 && $userNameSignupLength>25) { $userNameSignupError = "Must be between 4 to 25 characters long"; } but it doesn't work... what did I do wrong? Using strlen is correct to check the length of a string (in bytes). But a number cannot be both smaller than 4 and greater than 25 at the same time. Use || instead: if ($userNameSignupLength < 4 || $userNameSignupLength > 25) Now the condition is

This question already has an answer here: warning: incompatible implicit declaration of built-in function ‘xyz’ 4 answers I just finnished my hangman game and as a last step I am doing some code cleanup and optimization, but I can't seem to understand why I receive the following two warnings: warning: incompatible implicit declaration of built-in function 'strlen' warning: incompatible implicit declaration of built-in function 'strcpy' The code in which they are used is here: for(i = 1; i <= random; i++) fgets(word, 100, f); fclose(f); for(i = 0; i < strlen(word); i++) if(word[i] == '\n') word

sizeof是在编译的时候就将结果计算出来了是类型所占空间的字节数，所以以数组名做参数时计算的是整个数组的大小。而strlen是在运行的时候才开始计算结果，这是计算的结果不再是类型所占内存的大小，数组名就退化为指针了。 strlen(): 函数 strlen是寻找从指定地址开始，到出现的第一个0之间的字符个数 sizeof()运算符 sizeof https://blog.csdn.net/weixin_41042404/article/details/86719441 在本文中有很多是从 https://blog.csdn.net/weixin_41042404/article/details/86719441 搬运的，感谢该文的作者，大家转载别忘了附上该文链接。 以下是一个C程序，注释是对应的知识介绍 #include<stdio.h> #include<string> #include <stdlib.h> typedef long TLONG; int f1() { return 0; }; double f2() { return 0.0; } void f3() {} union u1//定义联合 { double a; int b; }; union u2 { char a[13]; int b; }; union u3 { char a[13]; char b; }

目录 sizeof与strlen的不同表现 关于sizeof与strlen的对比总结 sizeof与strlen的不同表现 看程序说结果： #include <stdio.h> #include <string.h> int main(int argc, char* argv[]) { char* szHello = "Hello"; printf("%d\r\n", sizeof(szHello)); printf("%d\r\n", sizeof("Hello")); printf("%d\r\n", strlen(szHello)); return 0; } 关于sizeof与strlen的对比总结 sizeof是运算符，编译时求各种变量、类型大小，对字符串会包括结尾的'\0' strlen是函数，求字符串的长度，不包括结尾的'\0' 来源： https://www.cnblogs.com/shellmad/p/11695568.html

一个简单的处理为单位万元的函数 /** * 判断数字 * @param $data 数字 到分 * @return string */ private static function checkNumber($data) { $wNumber = 1000000; $number = bcdiv($data, $wNumber); $strLenD = strlen($data); if ($number > 0) { $strLen = strlen($number); $res = $number . '.' . rtrim(substr($data, $strLen, $strLenD - $strLen), '0'); } elseif ($data > 0) { $zero = ''; for ($i = 0; $i < strlen($wNumber) - $strLenD - 1; $i++) { $zero .= 0; } $res = '0.' . $zero . trim($data, '0'); } else { $res = 0; } return rtrim($res, '.'); } 来源： https://www.cnblogs.com/two-bees/p/11693844.html

根据步长切割字符串:strsplit 1 /************************************************* 2 *函数功能：使用newstr替换oldstr，若newstr为空，则表示删除 3 *参数str：待处理的字符串 4 *参数oldstr：旧字符串 5 *参数newstr：新字符串（可传NULL） 6 *返回值：返回处理得到的字符串 7 *备注：调用需包含string.h 8 *************************************************/ 9 char *strrpc(char *str,char *oldstr,char *newstr) 10 { 11 char bstr[1024] = {0};//转换缓冲区 12 int i = 0; 13 14 if(!str||!oldstr) return NULL; 15 for(i=0;i<strlen(str);i++) 16 { 17 if(!strncmp(str+i,oldstr,strlen(oldstr))) 18 {//查找目标字符串 19 if(newstr!=NULL) {strcat(bstr,newstr);}//newstr参数若为NULL,则表示删除字符串 20 i += strlen(oldstr)-1; 21 }else

Source Insight 4.0 文件类型、编码格式、tab转空格、tab键自动补全设置。。。 http://www.cnblogs.com/bluestorm/p/6864540.html 1.括号配对高亮： “在前括号左侧，后括号左侧” 双击鼠标左键，可以选定匹配括号和其中内容(<>,(),L{R},[]之间) 2.让{ 和 } 不缩进： Options -> Document Options -> Auto Indenting -> Auto Indent Type 选 Simple 还有：让{ 和 } 不缩进： options->document options->auto indent 去掉indent Open Brace和Indent Close Brace。 （不好使，括号无法配对对齐！） 3.添加文件类型 用户可以定义自己的类型，Options->Document Options->add type,定义文件类型名以及文件名后缀。 勾选include when adding to projects在添加目录下文件到工程是该类文件就会添加进SI的工程。 如果需要将所有文件添加进SI的工程，可以定义一种文件类型*.*。 如： *.java;*.jav;*.xml;*.json,*.gradle,*.bat,*.pro,*.mk,*.aidl,*.so, *.jpg