form help

@so_is_thisOct 22.2006 — #What kind of file are you writing to? Myself, when I can't use a database, I use a CSV file instead. Basically, I read the entire file into memory (a 2D array) and update that. When I'm ready to save it, I re-write the entire CSV file.

This function reads in the CSV file:

[code=php]function csv_capture($file, $maxlen)		// capture CSV file into 2-d array
 {
 $array = array();						// create empty array
 $done = false;							// set completion flag off
 $fp = @fopen($file, "r");				// open master CSV file as input
 if($fp && !feof($fp)):					// if file opened successfully
 while($temp = fgetcsv($fp, $maxlen)): // while file record returned
 $array[] = $temp;				// add to 2-d array
 endwhile;
 if(feof($fp)) $done = true;			// if at end, set completion flag on
 endif;
 if($fp) fclose($fp);					// if valid file handle, close it
 if($done) return $array;				// return 2-d array result
 return false;							// else signal error has occurred
 }[/code]

This function re-writes the entire CSV file:

[code=php]function csv_replace($file, $array)			// replace CSV file from 2-d array
 {
 $copy = $file.'.tmp';					// create temporary CSV file name
 $done = false;							// set completion flag
 $fp = fopen($copy, "w");				// open temporary CSV file as output
 if($fp):
 $done = true;						// set completion flag
 foreach($array as $data):			// write each sub array element
 if(!fputcsv($fp, $data)):		// as CSV record output
 $done = false;				// on failure reset completion flag
 break;						// exit foreach construct
 endif;
 endforeach;
 fclose($fp);						// close temporary CSV file
 endif;
 if($done):								// if completed successfully
 @unlink($file);						// delete primary file
 return rename($copy, $file);		// rename temporary file as primary
 endif;
 return false;							// else signal error has occurred
 }[/code]

This is the function called from that one:

[code=php]function fputcsv($fp, $array, $delim=',')	// write 1-d array as CSV record
 {
 switch(strlen($delim)):					// edit field delimiter length and content
 case 0;									// empty string
 $delim = ',';						// defaults to comma delimiter
 break;								// exit switch construct
 case 1;									// only delimiter length of 1 supported
 break;								// exit switch construct
 default;								// delimiter too long
 $delim = str_left($delim, 1);		// truncate delimiter to 1 character
 endswitch;
 if ($delim <= ' ' || '~' <= $delim):	// if delimiter not in range
 $delim = ',';						// defaults to comma delimiter
 endif;
 //
 $line = '';										// create formatted CSV record
 foreach($array as $val):						// format each array value
 if(is_numeric($val)):						// numeric values
 $line .= $val . $delim;					// go in without value delimiters
 else:										// string values
 $val = str_replace("rn", "n", $val);	// change all cr/lf to lf only
 $val = str_replace('"', '""', $val);	// double up any double-quotes
 $line .= '"' . $val . '"' . $delim;		// and the result goes in double-quotes
 endif;
 endforeach;
 $line = str_left($line, strlen($line) - 1);		// remove last field delimiter
 return fwrite($fp, $line . "n");				// write record to CSV file
 }[/code]

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