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Basic usage

Example #1 DBA example

<?php

$id 
dba_open ( "/tmp/test.db" "n" "db2" );

if (!
$id ) {
    echo 
"dba_open failed\n" ;
    exit;
}

dba_replace ( "key" "This is an example!" $id );

if (
dba_exists ( "key" $id )) {
    echo 
dba_fetch ( "key" $id );
    
dba_delete ( "key" $id );
}

dba_close ( $id );
?>

DBA is binary safe and does not have any arbitrary limits. However, it inherits all limits set by the underlying database implementation.

All file-based databases must provide a way of setting the file mode of a new created database, if that is possible at all. The file mode is commonly passed as the fourth argument to dba_open() or dba_popen() .

You can access all entries of a database in a linear way by using the dba_firstkey() and dba_nextkey() functions. You may not change the database while traversing it.

Example #2 Traversing a database

<?php

// ...open database...

$key  dba_firstkey ( $id );

while (
$key  !=  false ) {
    if (
true ) {           // remember the key to perform some action later
        
$handle_later [] =  $key ;
    }
    
$key  dba_nextkey ( $id );
}

foreach (
$handle_later  as  $val ) {
    
dba_delete ( $val $id );
}

?>
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