pg_fetch_row

(PHP 4, PHP 5, PHP 7, PHP 8)

pg_fetch_row — Carica una tupla in un array

Descrizione

function pg_fetch_row(resource $result, int $tupla): array

pg_fetch_row() carica un record dal risultato della query associato alla risorsa identificata da result. La riga (record) è restituia sotto form di array. Ogni campo è identificato da un indice numerico, che inizia da 0.

Restituisce un array che corrisponde alla riga caricata, oppure false se non ci sono altre tuple.

Example #1 Postgres fetch row

<?php 
$conn = pg_pconnect ("dbname=editori");
if (!$conn) {
    echo "Si è verificato un errore.\n";
    exit;
}

$result = pg_query ($conn, "SELECT * FROM autori");
if (!$rrisultato) {
    echo "Si è verificato un errore.\n";
    exit;
}

while ($row = pg_fetch_row($risultato, $i)) {
  for ($j=0; $j < count($row); $j++) {
    echo "$row[$j]&nbsp;";
  }

  echo "<BR>";

}
 
?>

Vedere anche pg_query(), pg_fetch_array(), pg_fetch_object() e pg_fetch_result().

Nota:

Dalla versione 4.1.0, row è opzionale. La chiamata a pg_fetch_row() incrementa il puntatore alle tuple di 1.

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User Contributed Notes 5 notes

up
4
post at zeller-johannes dot de
21 years ago
I wondered whether array values of PostgreSQL are converted to PHP arrays by this functions. This is not the case, they are stored in the returned array as a string in the form "{value1 delimiter value2 delimiter value3}" (See http://www.postgresql.org/docs/8.0/interactive/arrays.html#AEN5389).
up
3
pletiplot at seznam dot cz
20 years ago
Note, that when you retrieve some PG boolean value, you get 't' or 'f' characters which are not compatible with PHP bool.
up
0
eddie at eddiemonge dot com
16 years ago
pg_fetch_row is faster than pg_fetch_assoc when doing a query with * as the select parameter. Otherwise, with declared columns, the two are similar in speed.
up
-1
Matthew Wheeler
23 years ago
Note that the internal row counter is incremented BEFORE the row is retrieved. This causes an off by one error if you try to do:

pg_result_seek($resid,0);
pg_fetch_row($resid);

you will get back the SECOND result not the FIRST.
up
-1
darw75 at swbell dot net
24 years ago
a way to do this with 2 loops to insert data into a table...

$num = pg_numrows($result);
$col_num = pg_numfields($result);

for ($i=0; $i<$num; $i++) {
  $line  = pg_fetch_array($result, $i, PGSQL_ASSOC);
  print "\t<tr bgcolor=#dddddd>\n";
    for ($j=0; $j<$col_num; $j++){
    list($col_name, $col_value) =each($line);
    print "\t\t<TD ALIGN=RIGHT><FONT SIZE=1 FACE='Geneva'>$col_value</FONT></TD>\n";
    }
  echo "<br>";
  }
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