Simple question
| From: | Oriol | Date: | Mon, 30 Jun 2003 16:13:04 +0000 |
| Subject: | Simple question | ||
| Groups: | php.internals | ||
| Request: | Send a blank email to internals+get-3051@lists.php.net to get a copy of this message | ||
Hello! I'm trying to write a trim function which expects a zval* of type
string, as follows:
int zstrtrim(zval *z)
{
char *ptr1 = Z_STRVAL_P(z), *ptr2;
if (Z_STRLEN_P(z) == 0) return;
ptr2 = &ptr1[Z_STRLEN_P(z)-1];
while (*ptr1 != 0)
{
if (*ptr1 > ' ') break;
ptr1++;
}
while (ptr2 > ptr1)
{
if (*ptr2 > ' ') break;
ptr2--;
}
ZVAL_STRINGL(z, ptr1, ptr2 - ptr1 + 1, 1);
}
However, the last line gives me a segmentation fault. Why? How can I
change the value of the input zval string?
Thank you for your patience!
Oriol