[PHP] writing / reading from text files
I need to write to a specific line in a text file, read from a line on demand, and update values at random, I want to do this all in the same text file. what is the best way to go about this? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] writing / reading from text files
fopen(), fwrite(),fseek(),fread(),fclose() -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:29 AM To: [EMAIL PROTECTED] Subject: [PHP] writing / reading from text files I need to write to a specific line in a text file, read from a line on demand, and update values at random, I want to do this all in the same text file. what is the best way to go about this? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] writing / reading from text files
lol- so I use fseek() to move the file pointer before where I need to write/replace/update a value? Is there a parameter for fseek to tell it to move to a newline, or stop after a certain bytes? Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... fopen(), fwrite(),fseek(),fread(),fclose() -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:29 AM To: [EMAIL PROTECTED] Subject: [PHP] writing / reading from text files I need to write to a specific line in a text file, read from a line on demand, and update values at random, I want to do this all in the same text file. what is the best way to go about this? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] writing / reading from text files
from the manual: int fseek (int fp, int offset [, int whence]) Sets the file position indicator for the file referenced by fp.The new position, measured in bytes from the beginning of the file, is obtained by adding offset to the position specified by whence, whose values are defined as follows: SEEK_SET - Set position equal to offset bytes. SEEK_CUR - Set position to current location plus offset. SEEK_END - Set position to end-of-file plus offset. -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:43 AM To: [EMAIL PROTECTED] Subject: Re: [PHP] writing / reading from text files lol- so I use fseek() to move the file pointer before where I need to write/replace/update a value? Is there a parameter for fseek to tell it to move to a newline, or stop after a certain bytes? Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... fopen(), fwrite(),fseek(),fread(),fclose() -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:29 AM To: [EMAIL PROTECTED] Subject: [PHP] writing / reading from text files I need to write to a specific line in a text file, read from a line on demand, and update values at random, I want to do this all in the same text file. what is the best way to go about this? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] writing / reading from text files
thanks guys, there is just one more question I dont see an answer for anywhere I've looked. will fseek read past \n's and if so how do I move the filepointer to a newline, or should I just put all the data on one line? (not unreasonable n this case) Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... from the manual: int fseek (int fp, int offset [, int whence]) Sets the file position indicator for the file referenced by fp.The new position, measured in bytes from the beginning of the file, is obtained by adding offset to the position specified by whence, whose values are defined as follows: SEEK_SET - Set position equal to offset bytes. SEEK_CUR - Set position to current location plus offset. SEEK_END - Set position to end-of-file plus offset. -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:43 AM To: [EMAIL PROTECTED] Subject: Re: [PHP] writing / reading from text files lol- so I use fseek() to move the file pointer before where I need to write/replace/update a value? Is there a parameter for fseek to tell it to move to a newline, or stop after a certain bytes? Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... fopen(), fwrite(),fseek(),fread(),fclose() -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:29 AM To: [EMAIL PROTECTED] Subject: [PHP] writing / reading from text files I need to write to a specific line in a text file, read from a line on demand, and update values at random, I want to do this all in the same text file. what is the best way to go about this? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] writing / reading from text files
from the manual: fgets -- Gets line from file pointer Description string fgets (int fp, int length) Returns a string of up to length - 1 bytes read from the file pointed to by fp. Reading ends when length - 1 bytes have been read, on a newline (which is included in the return value), or on EOF (whichever comes first). If an error occurs, returns FALSE. The file pointer must be valid, and must point to a file successfully opened by fopen(), popen(), or fsockopen(). fputs -- Writes to a file pointer Description int fputs (int fp, string str [, int length]) fputs() is an alias to fwrite(), and is identical in every way. Note that the length parameter is optional and if not specified the entire string will be written -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 12:36 PM To: [EMAIL PROTECTED] Subject: Re: [PHP] writing / reading from text files thanks guys, there is just one more question I dont see an answer for anywhere I've looked. will fseek read past \n's and if so how do I move the filepointer to a newline, or should I just put all the data on one line? (not unreasonable n this case) Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... from the manual: int fseek (int fp, int offset [, int whence]) Sets the file position indicator for the file referenced by fp.The new position, measured in bytes from the beginning of the file, is obtained by adding offset to the position specified by whence, whose values are defined as follows: SEEK_SET - Set position equal to offset bytes. SEEK_CUR - Set position to current location plus offset. SEEK_END - Set position to end-of-file plus offset. -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:43 AM To: [EMAIL PROTECTED] Subject: Re: [PHP] writing / reading from text files lol- so I use fseek() to move the file pointer before where I need to write/replace/update a value? Is there a parameter for fseek to tell it to move to a newline, or stop after a certain bytes? Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... fopen(), fwrite(),fseek(),fread(),fclose() -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:29 AM To: [EMAIL PROTECTED] Subject: [PHP] writing / reading from text files I need to write to a specific line in a text file, read from a line on demand, and update values at random, I want to do this all in the same text file. what is the best way to go about this? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] writing / reading from text files
On Fri, 2002-02-15 at 10:36, cyberskydive wrote: thanks guys, there is just one more question I dont see an answer for anywhere I've looked. will fseek read past \n's and if so how do I move the filepointer to a newline, or should I just put all the data on one line? (not unreasonable n this case) fseek() neither knows nor cares what the contents of the byte it's pointing to are--it's not even an error to seek beyond the ends of a file, so watch your bounds checking. :) fread() will read a line at a time, and update the file pointer as it goes, and is the usual way of reading a file line-by-line. A lot of file work in PHP is done with the file() function, which reads a file all at once, placing each line into its own array element. This makes line processing very, very easy--dunno if that will help you in this situation, though. Torben Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... from the manual: int fseek (int fp, int offset [, int whence]) Sets the file position indicator for the file referenced by fp.The new position, measured in bytes from the beginning of the file, is obtained by adding offset to the position specified by whence, whose values are defined as follows: SEEK_SET - Set position equal to offset bytes. SEEK_CUR - Set position to current location plus offset. SEEK_END - Set position to end-of-file plus offset. -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:43 AM To: [EMAIL PROTECTED] Subject: Re: [PHP] writing / reading from text files lol- so I use fseek() to move the file pointer before where I need to write/replace/update a value? Is there a parameter for fseek to tell it to move to a newline, or stop after a certain bytes? Rick Emery [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... fopen(), fwrite(),fseek(),fread(),fclose() -Original Message- From: cyberskydive [mailto:[EMAIL PROTECTED]] Sent: Friday, February 15, 2002 10:29 AM To: [EMAIL PROTECTED] Subject: [PHP] writing / reading from text files I need to write to a specific line in a text file, read from a line on demand, and update values at random, I want to do this all in the same text file. what is the best way to go about this? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- Torben Wilson [EMAIL PROTECTED] http://www.thebuttlesschaps.com http://www.hybrid17.com http://www.inflatableeye.com +1.604.709.0506 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
