oci_field_precision
(PHP 5, PECL OCI8 >= 1.1.0)
oci_field_precision — Tell the precision of a field
Description
Returns precision of the field.
For FLOAT columns, precision is nonzero and scale is -127. If precision is 0, then column is NUMBER. Else it's NUMBER(precision, scale).
Parameters
-
statement -
A valid OCI statement identifier.
-
field -
Can be the field's index (1-based) or name.
Return Values
Returns the precision as an integer, or FALSE on errors.
Examples
Example #1 oci_field_precision() Example
<?php
// Create the table with:
// CREATE TABLE mytab (c1 NUMBER, c2 FLOAT, c3 NUMBER(4), c4 NUMBER(5,3));
$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$conn) {
$m = oci_error();
trigger_error(htmlentities($m['message']), E_USER_ERROR);
}
$stid = oci_parse($conn, "SELECT * FROM mytab");
oci_execute($stid, OCI_DESCRIBE_ONLY); // Use OCI_DESCRIBE_ONLY if not fetching rows
$ncols = oci_num_fields($stid);
for ($i = 1; $i <= $ncols; $i++) {
echo oci_field_name($stid, $i) . " "
. oci_field_precision($stid, $i) . " "
. oci_field_scale($stid, $i) . "<br>\n";
}
// Outputs:
// C1 0 -127
// C2 126 -127
// C3 4 0
// C4 5 3
oci_free_statement($stid);
oci_close($conn);
?>
Notes
Note:
In PHP versions before 5.0.0 you must use ocicolumnprecision() instead. This name still can be used, it was left as alias of oci_field_precision() for downwards compatability. This, however, is deprecated and not recommended.
See Also
- oci_field_scale() - Tell the scale of the field
- oci_field_type() - Returns a field's data type name
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- Oracle OCI8
- oci_bind_array_by_name
- oci_bind_by_name
- oci_cancel
- oci_client_version
- oci_close
- oci_commit
- oci_connect
- oci_define_by_name
- oci_error
- oci_execute
- oci_fetch_all
- oci_fetch_array
- oci_fetch_assoc
- oci_fetch_object
- oci_fetch_row
- oci_fetch
- oci_field_is_null
- oci_field_name
- oci_field_precision
- oci_field_scale
- oci_field_size
- oci_field_type_raw
- oci_field_type
- oci_free_descriptor
- oci_free_statement
- oci_get_implicit_resultset
- oci_internal_debug
- oci_lob_copy
- oci_lob_is_equal
- oci_new_collection
- oci_new_connect
- oci_new_cursor
- oci_new_descriptor
- oci_num_fields
- oci_num_rows
- oci_parse
- oci_password_change
- oci_pconnect
- oci_result
- oci_rollback
- oci_server_version
- oci_set_action
- oci_set_client_identifier
- oci_set_client_info
- oci_set_edition
- oci_set_module_name
- oci_set_prefetch
- oci_statement_type
Коментарии
I've found that when using ocicolumnprecision or oci_field_precision it will not show you the decimal places if you are are reading from tables with decimals. You can use ocicolumnscale or oci_field_scale to find the decimal.
if( ocicolumnscale($R, $i ) > 0 )
{
$int_decimal = ocicolumnscale($R, $i );
$int_length = ocicolumnprecision($R, $i) - $int_decimal;
}
I did not test well before posting previous code. This if statement works and the other does not.
if( ocicolumnscale($R, $i ) != 129 )
{
$int_decimal = ocicolumnscale($R, $i );
$int_length = ocicolumnprecision($R, $i) - $int_decimal;
}