pg_field_name
(PHP 4 >= 4.2.0, PHP 5)
pg_field_name -- Returns the name of a field
Описание
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.
Замечание:
This function used to be called pg_fieldname().
Возвращаемые значения
The field name, or FALSE on error.
Примеры
Пример 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";
}
?>
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Результат выполнения данного примера: 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 |
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