(PHP 4, PHP 5)
mysql_field_flags — Get the flags associated with the specified field in a result
$result
, int $field_offset
)mysql_field_flags() returns the field flags of the specified field. The flags are reported as a single word per flag separated by a single space, so that you can split the returned value using explode().
resultThe result resource that is being evaluated. This result comes from a call to mysql_query().
field_offsetThe numerical field offset. The
field_offset starts at 0. If
field_offset does not exist, an error of level
E_WARNING is also issued.
Returns a string of flags associated with the result or FALSE on failure.
The following flags are reported, if your version of MySQL is current enough to support them: "not_null", "primary_key", "unique_key", "multiple_key", "blob", "unsigned", "zerofill", "binary", "enum", "auto_increment" and "timestamp".
Example #1 A mysql_field_flags() example
<?php
$result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
if (!$result) {
echo 'Could not run query: ' . mysql_error();
exit;
}
$flags = mysql_field_flags($result, 0);
echo $flags;
print_r(explode(' ', $flags));
?>
The above example will output something similar to:
not_null primary_key auto_increment
Array
(
[0] => not_null
[1] => primary_key
[2] => auto_increment
)
Note:
For backward compatibility, the following deprecated alias may be used: mysql_fieldflags()