ibase_fetch_row

(PHP 5)

ibase_fetch_rowElabora una riga da un database InterBase

Descrizione

array ibase_fetch_row ( int $result_identifier )

Restituisce un array che corrisponde alla riga ottenuta o FALSE se non ci sono righe rimanenti.

ibase_fetch_row() prende una riga di dati dai risultati associati allo specificato result_identifier. La riga viene restituita come un array. Ogni colonna risultante viene immagazzinata in un offset dell'array, l'offset inizia da 0.

Chiamate successive a ibase_fetch_row() restituiscono la successiva riga dai risultati della query o FALSE se non vi sono ulteriori righe.

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User Contributed Notes 2 notes

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1
richard at wojthegame dot com
8 years ago
If you have a query

"select ... from table1 where ..."

and would like to know the cardinality of the result set by issuing a separate query

"select count(*) from table1 where ..."

then you might end up with an incorrect value since an insert or delete can occur between the running of these queries (unlikely, but possible).
The only way i can think of getting the correct value would be something along the lines of

<?php

$qry
= "select ... from table1 where ...";
$result = ibase_query($tr, $qry) // assume $tr is a transaction

$count = 0;
while (
$row[$count] = ibase_fetch_assoc($result))
   
$count++;

?>

then $count is the cardinality, and $row the result set.
Then you can work with the result set:

<?php

for ($i = 0; $i < $count; $i++)
{
 
// do something with $row[$i]
}

?>
up
0
gurroa at gurroa dot cz
10 years ago
I had some troubles with moving php application from one dbase to another. From SyBase to Interbase.
Especially with missing function "ibase_num_rows($result)".

These are functions that helped me.
<?php
...
$dbh = ibase_connect ($host, $username, $password);
...
$ar_count_queries = array();

function
ibasequery($query) {
 
$cquery = preg_replace("/SELECT(.*?)FROM(.*?)/","SELECT COUNT(*) FROM \\2",$query);
  if (
$cquery != $query) {
  
$crow=get_object_vars( ibase_fetch_object( ibase_query( $GLOBALS["dbh"], $cquery ) ) );
   }
  @
$res = ibase_query($GLOBALS["dbh"],$query);
  if (isset(
$res)) {
    if (isset(
$crow)) {
    
$GLOBALS["ar_count_queries"][$res] = $radcountselect["COUNT"];
    }
    return
$res;
  }
   return
false;
}

function
ibasenumrows($result) {
  return
$GLOBALS["ar_count_queries"][$res];
}

function
ibasefetchrow($result) {
  return
get_object_vars(ibase_fetch_object($result));
}

// example
$result = ibasequery("SELECT * FROM TABLE");
$numrows = ibasenumrows($result);
echo
"Number of rows: $numrows.\nContent: \n";
while (
$onerow = ibasefetchrow($res)) {
  foreach(
$onerow as $key => $value) {
    echo
$key.": ".$value.", ";
  }
  echo
"\n";
}
?>
Gurroa
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