php 한글 메뉴얼 도움말 검색 사이트 Returns the field number of the named field [function.pg-field-num]

설명

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().

인수

result: PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
field_name: The name of the field.

반환값

The field number (numbered from 0), or -1 on error.

예제

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');
?>

위 예제의 출력:

Column 'title' is field number: 2

참고

pg_field_name() - Returns the name of a field