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Top Forums UNIX for Beginners Questions & Answers How do you preserve the max length of a line after replacing a specific value? Post 303041347 by RudiC on Thursday 21st of November 2019 02:56:59 PM
Old 11-21-2019
Not sure I understand. You can't preserve a 10 char length for a field that is three (four if you count the space) chars in length. What be the length of $NEW?
 

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MYSQL_FIELD_LEN(3)							 1							MYSQL_FIELD_LEN(3)

mysql_field_len - Returns the length of the specified field

SYNOPSIS
Warning This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include: omysqli_fetch_field_direct(3) [length] o PDOStatement::getColumnMeta [len] int mysql_field_len (resource $result, int $field_offset) DESCRIPTION
mysql_field_len(3) returns the length of the specified field. o $ result -The result resource that is being evaluated. This result comes from a call to mysql_query(3). o $ field_offset -The numerical field offset. The $field_offset starts at 0. If $field_offset does not exist, an error of level E_WARNING is also issued. The length of the specified field index on success or FALSE on failure. Example #1 mysql_field_len(3) example <?php $result = mysql_query("SELECT id,email FROM people WHERE id = '42'"); if (!$result) { echo 'Could not run query: ' . mysql_error(); exit; } // Will get the length of the id field as specified in the database // schema. $length = mysql_field_len($result, 0); echo $length; ?> Note For backward compatibility, the following deprecated alias may be used: mysql_fieldlen(3) mysql_fetch_lengths(3), strlen(3). PHP Documentation Group MYSQL_FIELD_LEN(3)
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