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dba_firstkey

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

dba_firstkeyRecuperar la primera clave

Descripción

dba_firstkey(resource $handle): string

dba_firstkey() devuelve la primera clave de la base de datos y reestablece el apuntador de clave interno. Esto permite una búsqueda lineal a través de la base de datos completa.

Parámetros

handle

El gestor de base de datos, devuelto por dba_open() o dba_popen().

Valores devueltos

Devuelve la clave en caso de tener éxito o false en caso de error.

Ver también

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User Contributed Notes 3 notes

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jacky dot jackyhung dot net
22 years ago
for ($key = dba_firstkey($this->handle); $key !== false; $key = dba_nextkey($this->handle)) {
$keyset[] = $key;
} // end for
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-1
rcracer91 at gmail dot com
15 years ago
I wondered why it wasn't already written, so I did because I think working with associative arrays is always as comfortable as can be

<?php
function dba_fetch_assoc($handle) {
$assoc = array();
for(
$k = dba_firstkey($handle); $k != false; $k = dba_nextkey($handle)) {
$assoc[$k] = dba_fetch($k, $handle);
}
return
$assoc;
}
?>
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-1
psycho-logic at excite dot com
21 years ago
Looks like Jacky is using some DB object? I don't know if it's native to PHP or written on it's own... Anyways this is what I use:

$DBCon = dba_open("/tmp/test_db.db2", "r", "db2") or die("Uh oh, can't open the database :(");
if ($the_key = dba_firstkey($DBCon)) do {
print("Key: $the_key Value:");
print dba_fetch($the_key, $DBCon);
print("<BR>");
} while ($the_key = dba_nextkey($DBCon));
print ("<BR><BR><BR>Well looks like we're done here :-)");
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