mssql_field_seek()

(PHP 4, PHP 5, PECL odbtp >= 1.1.1)

Seeks to the specified field offset

Warning

This function wasREMOVEDin PHP 7.0.0.

说明

mssql_field_seek(resource $result,int $field_offset): bool

Seeks to the specified field offset. If the next call to mssql_fetch_field() won't include a field offset, this field would be returned.

参数

$result

The result resource that is being evaluated. This result comes from a call to mssql_query().

$field_offset

The field offset, starts at 0.

返回值

成功时返回TRUE，或者在失败时返回FALSE。

范例

Example #1 Using mssql_field_seek() on the example for mssql_fetch_field()

<?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, notice the 
    // field_offset parameter is not set. See 
    // the mssql_field_seek call below
    $field = mssql_fetch_field($query);
    // Print the row
    echo '<tr>';
    echo '<td>' . $field->name . '</td>';
    echo '<td>' . strtoupper($field->type) . '</td>';
    echo '<td>' . $field->max_length . '</td>';
    echo '</tr>';
    // Move the internal seek pointer to the next
    // row in the result set
    mssql_field_seek($query, $i + 1);
}
echo '</tbody>';
echo '</table>';
// Free the query result
mssql_free_result($query);
?>

参见

• mssql_fetch_field()Get field information

Don't know this would help.
If you are using mssql to loop through a web page. Here is how to do it:
Suppose you want to select a few fields from t1 joining to t2
$numPerPage=10;
if(empty($offset))
 $offset=0;
if($next_x){
 $offset+=$numPerPage;
}
if($previous_x){
 $offset-=$numPerPage;
}
$qry_string = "SELECT DISTINCT TOP $numPerPage t1.field1, t1.field2 from t1 LEFT 
JOIN t2 ON t2.field1=t1.field1 
WHERE t2.another_field='specific_val' 
AND t1.fields 
NOT IN
(SELECT DISTINCT TOP $offset tmpT1.field1 
FROM t1 AS tmpT1 LEFT 
JOIN t2 ON t2.field1=tmpT1.field1 
WHERE t2.another_field='specific_val'
)";
// then run the above $qry_string using the while loop