Oracle 5.0, Reference Manual

Page: 2291 / 3232

Original MySQL API (
Mysql
)
2271
See Also
mysql_field_type
mysql_field_len
20.7.2.5.20.
mysql_field_len
Copyright 1997-2012 the PHP Documentation Group. [2230]
•
mysql_field_len
Returns the length of the specified field
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:
mysqli_fetch_field_direct
[length]
PDOStatement::getColumnMeta
[len]
Description
int mysql_field_len(
resource result,
int field_offset);
mysql_field_len
returns the length of the specified field.
Parameters
result
The result resource that is being evaluated. This result comes from
a call to
mysql_query
.
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.
Return Values
The length of the specified field index on success or
FALSE
on failure.
Examples
Example 20.49.
mysql_field_len
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;
?>
Notes