array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'en', ), 'this' => array ( 0 => 'function.mysql-field-flags.php', 1 => 'mysql_field_flags', ), 'up' => array ( 0 => 'ref.mysql.php', 1 => 'MySQL Functions', ), 'prev' => array ( 0 => 'function.mysql-fetch-row.php', 1 => 'mysql_fetch_row', ), 'next' => array ( 0 => 'function.mysql-field-len.php', 1 => 'mysql_field_len', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/mysql/functions/mysql-field-flags.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 4, PHP 5)
mysql_field_flags — Get the flags associated with the specified field in a result
This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide. Alternatives to this function include:
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().
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.
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()