C仿真PHP函数 addslashes stripslashes

c#include "stdio.h"#include "stdlib.h"//防真函数，仿真php addslashes...... char* addslashes(char *str){    char replaceStr[] = {'\'','"','\\'};    int newStrLen=0;    for(int i = 0; i < strlen(str); ++i)    {        ++newStrLen;        for(int j=0;j<strlen(replaceStr);++j)        {            if (replaceStr[j] == str[i]){                ++newStrLen;                break;            }        }    }    char * retStr = (char*)malloc(newStrLen+1);    memset(retStr,'\0',newStrLen+1);    newStrLen = 0;    for(int i = 0; i < strlen(str); ++i)    {        for(int j=0;j<strlen(replaceStr);++j)        {            if (replaceStr[j] == str[i]){                memcpy(retStr+newStrLen,"\\",1);                ++newStrLen;                break;            }        }        memcpy(retStr + newStrLen,&str[i],1);        ++newStrLen;    }    return retStr;}//去掉所有的反斜杠转义符char* stripslashes(char* str){    int newStrLen = 0;    char tmp;    for(int i=0; i < strlen(str);++i){        if (str[i] != '\\')++newStrLen;    }    char * retStr = (char*)malloc(newStrLen+1);    memset(retStr,'\0',newStrLen+1);    newStrLen=0;    for(int i=0; i < strlen(str);++i)    {        if (str[i]!='\\'){            memcpy(retStr + newStrLen,&str[i],1);            ++newStrLen;        }    }    return  retStr;}void main(int argc,char ** argv){    char * arg = argc == 1 ? argv[0] : argv[1];    arg = "2'23423423,\"111231231232\\1\"";    char * add_char = addslashes(arg);    printf("%s\n",add_char);    printf("%s\n",stripslashes(add_char) );}