mssql_fetch_field
(PHP 4, PHP 5, PECL odbtp >= 1.1.1)
mssql_fetch_field — Get field information
Warning
This function was REMOVED in PHP 7.0.0.
Alternatives to this function include:
- PDOStatement::getColumnMeta()
- sqlsrv_field_metadata()
- The various odbc_field_* functions in the unified ODBC driver.
说明
mssql_fetch_field (
resource
$result [,
int $field_offset = -1 ] ) :
object
mssql_fetch_field() can be used in order to obtain information about fields in a certain query result.
参数
-
result -
The result resource that is being evaluated. This result comes from a call to mssql_query().
-
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_offsetstarts at 0.
返回值
Returns an object containing field information.
The properties of the object are:
- name - column name. if the column is a result of a function, this property is set to computed#N, where #N is a serial number.
- column_source - the table from which the column was taken
- max_length - maximum length of the column
- numeric - 1 if the column is numeric
- type - the column type.
范例
Example #1 mssql_fetch_field() example
<?php
// Connect to MSSQL and select the database
mssql_connect('MANGO\SQLEXPRESS', 'sa', 'phpfi');
mssql_select_db('php');
// Send a select query to MSSQL
$query = mssql_query('SELECT * FROM [php].[dbo].[persons]');
// Construct table
echo '<h3>Table structure for \'persons\'</h3>';
echo '<table border="1">';
// Table header
echo '<thead>';
echo '<tr>';
echo '<td>Field name</td>';
echo '<td>Data type</td>';
echo '<td>Max length</td>';
echo '</tr>';
echo '</thead>';
// Dump all fields
echo '<tbody>';
for ($i = 0; $i < mssql_num_fields($query); ++$i) {
// Fetch the field information
$field = mssql_fetch_field($query, $i);
// Print the row
echo '<tr>';
echo '<td>' . $field->name . '</td>';
echo '<td>' . strtoupper($field->type) . '</td>';
echo '<td>' . $field->max_length . '</td>';
echo '</tr>';
}
echo '</tbody>';
echo '</table>';
// Free the query result
mssql_free_result($query);
?>
