(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_field_num — Returns the field number of the named field
pg_field_num() will return the number of the
field number that corresponds to the
field in the given result instance.
Зауваження:
This function used to be called pg_fieldnum().
resultПримірник PgSql\Result, якого повертає одна з функцій pg_query(), pg_query_params() або pg_execute() (серед інших).
fieldThe name of the field. The given name is treated like an identifier in an SQL command, that is, it is downcased unless double-quoted.
The field number (numbered from 0), or -1 on error.
| Версія | Опис |
|---|---|
| 8.1.0 |
Тепер параметр result має бути примірником
PgSql\Result. Раніше очікувався resource.
|
Приклад #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');
?>Поданий вище приклад виведе:
Column 'title' is field number: 2