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Top Forums Shell Programming and Scripting Awk Multiple Field Separators Post 49658 by google on Wednesday 7th of April 2004 07:04:46 AM
Old 04-07-2004
Awk takes input and creates "records" by delimiting by the value of RS. Awk delimits each "record" by the value of "FS", the field separator. You can then slice and dice each value of a field at your whim. In addition, if you dont have an easy way to split records and fields, Awk (gawk) allows you to define your own record by specifying column widths using the FIELDWIDTHS variable. Example
Code:
BEGIN  { FIELDWIDTHS = "9 6 10 6 7 7 35" }

.....will define a record of fixed width including whitespace between columns. So $1 is defined as a field of 9 bytes, $2 is defined as a field of 6 bytes and so on.

This is a pretty good tutorial on Awk. GNU Awk Tutorial

Last edited by rbatte1; 12-17-2019 at 10:05 AM..
 

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MYSQLI_FETCH_LENGTHS(3) 						 1						   MYSQLI_FETCH_LENGTHS(3)

mysqli_result::$lengths - Returns the lengths of the columns of the current row in the result set

       Object oriented style

SYNOPSIS
array$mysqli_result->lengths () DESCRIPTION
Procedural style array mysqli_fetch_lengths (mysqli_result $result) The mysqli_fetch_lengths(3) function returns an array containing the lengths of every column of the current row within the result set. PARAMETERS
o $ result -Procedural style only: A result set identifier returned by mysqli_query(3), mysqli_store_result(3) or mysqli_use_result(3). RETURN VALUES
An array of integers representing the size of each column (not including any terminating null characters). FALSE if an error occurred. mysqli_fetch_lengths(3) is valid only for the current row of the result set. It returns FALSE if you call it before calling mysqli_fetch_row/array/object or after retrieving all rows in the result. EXAMPLES
Example #1 Object oriented style <?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } $query = "SELECT * from Country ORDER BY Code LIMIT 1"; if ($result = $mysqli->query($query)) { $row = $result->fetch_row(); /* display column lengths */ foreach ($result->lengths as $i => $val) { printf("Field %2d has Length %2d ", $i+1, $val); } $result->close(); } /* close connection */ $mysqli->close(); ?> Example #2 Procedural style <?php $link = mysqli_connect("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } $query = "SELECT * from Country ORDER BY Code LIMIT 1"; if ($result = mysqli_query($link, $query)) { $row = mysqli_fetch_row($result); /* display column lengths */ foreach (mysqli_fetch_lengths($result) as $i => $val) { printf("Field %2d has Length %2d ", $i+1, $val); } mysqli_free_result($result); } /* close connection */ mysqli_close($link); ?> The above examples will output: Field 1 has Length 3 Field 2 has Length 5 Field 3 has Length 13 Field 4 has Length 9 Field 5 has Length 6 Field 6 has Length 1 Field 7 has Length 6 Field 8 has Length 4 Field 9 has Length 6 Field 10 has Length 6 Field 11 has Length 5 Field 12 has Length 44 Field 13 has Length 7 Field 14 has Length 3 Field 15 has Length 2 PHP Documentation Group MYSQLI_FETCH_LENGTHS(3)
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