PhpRiot
Become Zend Certified

Prepare for the ZCE exam using our quizzes (web or iPad/iPhone). More info...


When you're ready get 7.5% off your exam voucher using voucher CJQNOV23 at the Zend Store

pg_field_name

(PHP 4 >= 4.2.0, PHP 5)

pg_field_nameReturns the name of a field

Description

string pg_field_name ( resource $result , int $field_number )

pg_field_name() returns the name of the field occupying the given field_number in the given PostgreSQL result resource. Field numbering starts from 0.

Note:

This function used to be called pg_fieldname().

Parameters

result

PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).

field_number

Field number, starting from 0.

Return Values

The field name, or FALSE on error.

Examples

Example #1 Getting information about fields

<?php
  $dbconn 
pg_connect("dbname=publisher") or die("Could not connect");

  
$res pg_query($dbconn"select * from authors where author = 'Orwell'");
  
$i pg_num_fields($res);
  for (
$j 0$j $i$j++) {
      echo 
"column $j\n";
      
$fieldname pg_field_name($res$j);
      echo 
"fieldname: $fieldname\n";
      echo 
"printed length: " pg_field_prtlen($res$fieldname) . " characters\n";
      echo 
"storage length: " pg_field_size($res$j) . " bytes\n";
      echo 
"field type: " pg_field_type($res$j) . " \n\n";
  }
?>

The above example will output:

column 0
fieldname: author
printed length: 6 characters
storage length: -1 bytes
field type: varchar 

column 1
fieldname: year
printed length: 4 characters
storage length: 2 bytes
field type: int2 

column 2
fieldname: title
printed length: 24 characters
storage length: -1 bytes
field type: varchar 

See Also

PHP Manual