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PHP pg_field_num

PHP original manual for pg_field_num [ show | php.net ]

pg_field_num

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

pg_field_num — Returns the field number of the named field

Description

int pg_field_num ( resource $result , string $field_name )

pg_field_num() will return the number of the field number that corresponds to the field_name in the given PostgreSQL result resource.

Note:

This function used to be called pg_fieldnum().

Parameters

result

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

field_name

The name of the field.

Return Values

The field number (numbered from 0), or -1 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 author, year, title from authors where author = 'Orwell'");
  
  echo "Column 'title' is field number: ", pg_field_num($res, 'title');
?>

The above example will output:

Column 'title' is field number: 2

See Also