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oci_field_precision

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

oci_field_precisionTell the precision of a field

Description

oci_field_precision(resource $statement, string|int $column): int|false

Returns precision of the column.

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.

column

Can be the field's index (1-based) or name.

Return Values

Returns the precision as an integer, or false on failure

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

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User Contributed Notes 2 notes

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1
webmaster at smwebdesigns dot com
15 years ago
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;
}
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1
webmaster at smwebdesigns dot com
15 years ago
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;
}
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