(PHP 4, PHP 5)
mysql_fetch_field — Get column information from a result and return as an object
Use of this extension is discouraged. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API for more information. Alternatives to this function include:
$result
[, int $field_offset = 0
] )Returns an object containing field information. This function can be used to obtain information about fields in the provided query result.
sonuçresource türünde sorgu sonucu. Bu sonuç bir mysql_query() çağrısının sonucudur.
field_offset
The numerical field offset. If the field offset is not specified, the
next field that was not yet retrieved by this function is retrieved.
The field_offset starts at 0.
Returns an object containing field information. The properties of the object are:
NULL
Örnek 1 mysql_fetch_field() example
<?php
$conn = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$conn) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db('database');
$result = mysql_query('select * from table');
if (!$result) {
die('Query failed: ' . mysql_error());
}
/* get column metadata */
$i = 0;
while ($i < mysql_num_fields($result)) {
echo "Information for column $i:<br />\n";
$meta = mysql_fetch_field($result, $i);
if (!$meta) {
echo "No information available<br />\n";
}
echo "<pre>
blob: $meta->blob
max_length: $meta->max_length
multiple_key: $meta->multiple_key
name: $meta->name
not_null: $meta->not_null
numeric: $meta->numeric
primary_key: $meta->primary_key
table: $meta->table
type: $meta->type
unique_key: $meta->unique_key
unsigned: $meta->unsigned
zerofill: $meta->zerofill
</pre>";
$i++;
}
mysql_free_result($result);
?>
Bilginize: Bu işlevden dönen alan isimlerinin harf büyüklüklerinde değişiklik yapılmaz.
Bilginize:
If field or tablenames are aliased in the SQL query the aliased name will be returned. The original name can be retrieved for instance by using mysqli_result::fetch_field().