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)
