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63 lines
2.0 KiB
PHP
63 lines
2.0 KiB
PHP
<?php
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echo "database handler: $handler\n";
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@unlink($db_filename);
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if (($db_file = @dba_open($db_filename, "nl", $handler))!==FALSE) {
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dba_insert("key1", "Content String 1", $db_file);
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dba_insert("key2", "Content String 2", $db_file);
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dba_insert("key3", "Third Content String", $db_file);
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dba_insert("key4", "Another Content String", $db_file);
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dba_insert("key5", "The last content string", $db_file);
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dba_delete("key3", $db_file);
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dba_delete("key1", $db_file);
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$a = dba_firstkey($db_file);
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$i=0;
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while($a) {
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$a = dba_nextkey($db_file);
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$i++;
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}
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echo $i;
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for ($i=1; $i<6; $i++) {
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echo dba_exists("key$i", $db_file) ? "Y" : "N";
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}
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echo "\n";
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echo dba_fetch("key2", $db_file)."\n";
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dba_replace("key2", "Content 2 replaced", $db_file);
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echo dba_fetch("key2", $db_file)."\n";
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dba_close($db_file);
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} else {
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echo "Error creating database\n";
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}
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$db_writer = @dba_open($db_filename, "wl", $handler);
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if (($dba_reader = @dba_open($db_filename, "rlt", $handler))===false) {
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echo "Cannot read during write operation\n";
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} else {
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echo "Read during write permitted\n";
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}
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if ($db_writer!==FALSE) {
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dba_insert("key number 6", "The 6th value", $db_writer);
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@dba_insert("key number 6", "The 6th value inserted again would be an error", $db_writer);
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dba_replace("key2", "Content 2 replaced 2nd time", $db_writer);
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dba_delete("key4", $db_writer);
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echo dba_fetch("key2", $db_writer)."\n";
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echo dba_fetch("key number 6", $db_writer)."\n";
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dba_close($db_writer); // when the writer is open at least db3 would fail because of buffered io.
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} else {
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die("Error reopening database\n");
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}
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if (($db_file = @dba_open($db_filename, "rd", $handler))!==FALSE) {
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$key = dba_firstkey($db_file);
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$res = array();
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while($key) {
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$res[$key] = dba_fetch($key, $db_file);
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$key = dba_nextkey($db_file);
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}
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ksort($res);
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var_dump($res);
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dba_close($db_file);
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} else {
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echo "Error reading database\n";
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}
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if ($dba_reader) {
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dba_close($dba_reader);
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}
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?>
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