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Website Programming in PHP / MYSQL
mysql_field_len
(PHP 4, PHP 5, PECL mysql:1.0)
mysql_field_len — Returns the length of the specified field
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 #1 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
Note: For backward compatibility, the following deprecated alias may be used: mysql_fieldlen()
