But what about the pointer &cp2 If endptr is not NULL, strtol() stores the address of the first invalid character in *endptr. If there were no digits at all, strtol() stores the original value of nptr in *endptr. (Thus, if *nptr is not `\0' but **endptr is `\0' on return, the entire string is valid.)
Instead of a pointer - a position number would be okay.... (Actually, to get the number, I could just do "$cp-0" or "$cp*1" - gotta love variants) -----Original Message----- From: Daniel Tryba [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 13, 2002 2:12 PM To: Martin Towell Cc: [EMAIL PROTECTED] Subject: Re: [PHP] converting C to PHP On Thu, Jun 13, 2002 at 01:12:18PM +1000, Martin Towell wrote: > I'm converting some C functions to PHP and have come across this: > > int skipf(..., char *format) > { > /* ... */ > cp = format; > char *cp, *cp2; > multiplier = strtol(cp, &cp2, 10); > /* ... */ > } > > > How can I implement this line in PHP ? > multiplier = strtol(cp, &cp2, 10); > > > Oh, and an example of format is "12L20W2P" And the outcome in this case would be 12? >From man strtol: <quote> The string must begin with an arbitrary amount of white space (as determined by isspace(3)) followed by a single optional `+' or `-' sign. If base is zero or 16, the string may then include a `0x' prefix, and the number will be read in base 16; otherwise, a zero base is taken as 10 (decimal) unless the next character is `0', in which case it is taken as 8 (octal). The remainder of the string is converted to a long int value in the obvious manner, stopping at the first charac ter which is not a valid digit in the given base. (In bases above 10, the letter `A' in either upper or lower case represents 10, `B' represents 11, and so forth, with `Z' representing 35.) </quote> Sounds like a regexp would work, with base 10 this would make: function skipf($str) { if(preg_match("/^\s*(\+|-)?(\d+)/",$str,$match)) { return intval($match[1].$match[2],10); } else { return false; } } $format="012L20W2P"; $int=skipf($format); $int is 12 in this example. -- Daniel Tryba -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php