02-17-2004
Because this may be homework, I won't explain this. Note though that in the construct "l(432)", the first character is a letter "l".
echo "a = l(432) / l(10) ; scale=0 ; a = a / 1 ; 10^a" | bc -l
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LEARN ABOUT PHP
oci_field_scale
OCI_FIELD_SCALE(3) OCI_FIELD_SCALE(3)
oci_field_scale - Tell the scale of the field
SYNOPSIS
int oci_field_scale (resource $statement, mixed $field)
DESCRIPTION
Returns the scale of the column with $field index.
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
o $statement
- A valid OCI statement identifier.
o $field
- Can be the field's index (1-based) or name.
RETURN VALUES
Returns the scale as an integer, or FALSE on errors.
EXAMPLES
Example #1
oci_field_scale(3) 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, $i) . "<br>
";
}
// Outputs:
// C1 0 -127
// C2 126 -127
// C3 4 0
// C4 5 3
oci_free_statement($stid);
oci_close($conn);
?>
NOTES
Note
In PHP versions before 5.0.0 you must use ocicolumnscale(3) instead. This name still can be used, it was left as alias of
oci_field_scale(3) for downwards compatability. This, however, is deprecated and not recommended.
SEE ALSO
oci_field_precision(3), oci_field_type(3).
PHP Documentation Group OCI_FIELD_SCALE(3)