php man page for oci_field_precision

OCI_FIELD_PRECISION(3)													    OCI_FIELD_PRECISION(3)

oci_field_precision - Tell the precision of a field

SYNOPSIS
       int oci_field_precision (resource  $statement, mixed  $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
	      o $statement
		- A valid OCI statement identifier.

	      o $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(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 ocicolumnprecision(3) instead. This name still can be used, it was left as alias of
	      oci_field_precision(3) for downwards compatability. This, however, is deprecated and not recommended.

SEE ALSO
       oci_field_scale(3), oci_field_type(3).

PHP Documentation Group 												    OCI_FIELD_PRECISION(3)