[SyS]

isValidDate

Gist Link



Okay this function is created on the behalf of this discussion.It validates a date which is passed as string to the function.It doesn't need any delimiter or format to specify actually.The function will identify date,month and year automatically.


Parameters: str - date in string

PHP код:


bool:isValidDate(str[])//by Sreyas
{
    new count,i,j;
    new daysinmonth[12]={31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    new parts[3][5],Index_Beg;
    new bool:legit;
    while(str[i]!='\0')
    {
        if(str[i] < 48 || str[i] > 57)
        {
            count++;
            strmid(parts[j], str, Index_Beg, i, sizeof(parts[]));
            Index_Beg = i+1;
            j++;
        }
        i++;
        if(str[i]=='\0')
        {
            strmid(parts[j], str, Index_Beg, i, sizeof(parts[]));
        }
    }
    if(count != 2) return false;
    new number[3];
    for(i=0;i<3;i++)
    {
        number[i] = strval(parts[i]);
        if(number[i] == 0)return false;
    }
    new y,m,d;
    y = m = d = -1;
    for(i=0;i<3;i++)
    {
        if(number[i]>31)
        {
            if(y != -1) return false;
            y = i;
        }
    }
    for(i=0;i<3;i++)
    {
        if(i == y) continue;
        if(number[i] < 13 && number[i] > 0)
        {
            if(m == -1)
            {
                m = i;
            }
            else
            {
                d = i;
            }
        }
    }
    if(y==-1)
    {
        for(i=0;i<3;i++)
        {
            if(i==d||i==m) continue;
            y = i;
        }
    }
    if(d==-1)
    {
        for(i=0;i<3;i++)
        {
            if(i==y||i==m) continue;
            d = i;
        }
    }
    
    if(m==-1)
    {
        for(i=0;i<3;i++)
        {
            if(i==y||i==d) continue;
            m = i;
        }
    }
    
    if(number[y] % 400 == 0 || (number[y] % 100 != 0 && number[y] % 4 == 0))
        daysinmonth[1]=29;
    if( number[m]<13 && number[d] <= daysinmonth[number[m]-1])
        legit=true;
    if (!legit) return false;
    return true;
} 


NOTE: More faster function and one using sscanf is posted by Lordzy below. So i prefer you to use that instead of this as it proved to be more slow.